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<div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/624f287474bc5c010525d678/bg1.jpg"><div class="c x0 y1 w2 h0"><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x2 h3 y3 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h4 y4 ff3 fs2 fc0 sc1 ls0 ws0">前<span class="ff4"> </span>言<span class="ff4"> </span></div><div class="t m0 x1 h4 y5 ff4 fs2 fc0 sc1 ls0 ws0"> </div><div class="t m0 x4 h5 y6 ff5 fs3 fc0 sc0 ls0 ws0">有限元法是工程中广泛使用的一种数值计算方法。它是力学、计算方法和计算机</div><div class="t m0 x5 h5 y7 ff5 fs3 fc0 sc0 ls0 ws0">技术相结合的产物。在工程应用中，有限元法比其它数值分析方法更流行的一个重要</div><div class="t m0 x5 h5 y8 ff5 fs3 fc0 sc0 ls0 ws0">原因在于：<span class="_ _0"></span>相对与其它数值分析方法，<span class="_ _0"></span>有限元法对边界的模拟更灵活，<span class="_ _0"></span>近似程度更高。</div><div class="t m0 x5 h5 y9 ff5 fs3 fc0 sc0 ls0 ws0">所以，伴随着有限元理论以及计算机技术的发展，大有限元软件的应用证变得越来越</div><div class="t m0 x5 h5 ya ff5 fs3 fc0 sc0 ls0 ws0">普及。<span class="ff1"> </span></div><div class="t m0 x4 h5 yb ff1 fs3 fc0 sc0 ls0 ws0">ABAQUS<span class="_ _1"> </span><span class="ff5">软件一直以非线性有限元分析软件而闻名，这也是它和<span class="_ _1"> </span></span>ANSYS,Nastran<span class="_ _1"> </span><span class="ff5">等</span></div><div class="t m0 x5 h5 yc ff5 fs3 fc0 sc0 ls0 ws0">软件的区别所在。非线性有限元分析的用处越来越大，因为在所用材料非常复杂很多</div><div class="t m0 x5 h5 yd ff5 fs3 fc0 sc0 ls0 ws0">情况下，用线性分析来近似已不再有效。比方说，一个复合材料就不能用传统的线性</div><div class="t m0 x5 h5 ye ff5 fs3 fc0 sc0 ls0 ws0">分析软件包进行分析。任何与时间有关联，有较大位移量的情况都不能用线性分析法</div><div class="t m0 x5 h5 yf ff5 fs3 fc0 sc0 ls0 ws0">来处理。多年前，虽然非线性分析能更适合、更准确的处理问题，但是由于当时计算</div><div class="t m0 x5 h5 y10 ff5 fs3 fc0 sc0 ls0 ws0">设备的能力不够强大、非线性分析软件包线性分析功能不够健全，所以通常采用线性</div><div class="t m0 x5 h5 y11 ff5 fs3 fc0 sc0 ls0 ws0">处理的方法。<span class="ff1"> </span></div><div class="t m0 x4 h5 y12 ff5 fs3 fc0 sc0 ls0 ws0">这种情况已经得到了极大的改善，<span class="_ _2"></span>计算设备的能力变得更加强大、<span class="_ _2"></span>类似<span class="_ _3"> </span><span class="ff1">ABAQUS<span class="_ _1"> </span></span>这</div><div class="t m0 x5 h5 y13 ff5 fs3 fc0 sc0 ls0 ws0">样的产品功能日臻完善，应用日益广泛。<span class="ff1"> </span></div><div class="t m0 x4 h5 y14 ff5 fs3 fc0 sc0 ls0 ws0">非线性有限元分析在各个制造行业得到了广泛应用，有不少大型用户。航空航天</div><div class="t m0 x5 h5 y15 ff5 fs3 fc0 sc0 ls0 ws0">业一直是非线性有限元分析的大客户，一个重要原因是大量使用复合材料。新一代波</div><div class="t m0 x5 h5 y16 ff5 fs3 fc0 sc0 ls0 ws0">音<span class="ff1"> 787<span class="_ _1"> </span></span>客机将全部采用复合材料。只有像<span class="ff1"> ABAQUS<span class="_ _1"> </span></span>这样的软件，才能分析包括多个子</div><div class="t m0 x5 h5 y17 ff5 fs3 fc0 sc0 ls0 ws0">系统的产品耐久性能。在汽车业，用线性有限元分析来做四轮耐久性分析不可能得到</div><div class="t m0 x5 h5 y18 ff5 fs3 fc0 sc0 ls0 ws0">足够准确的结果。分析汽车的整体和各个子系统的性能要求（如悬挂系统等）需要进</div><div class="t m0 x5 h5 y19 ff5 fs3 fc0 sc0 ls0 ws0">行非线性分析。<span class="_ _4"></span>在土木工程业，<span class="_ _4"></span><span class="ff1"> ABAQUS<span class="_ _1"> </span><span class="ff5">能处理包括混凝土静动力开裂分析以及沥青混</span></span></div><div class="t m0 x5 h5 y1a ff5 fs3 fc0 sc0 ls0 ws0">凝土方面的静动力分析，还能处理高度复杂非线性材料的损伤和断裂问题，这对于大</div><div class="t m0 x5 h5 y1b ff5 fs3 fc0 sc0 ls0 ws0">型桥梁结构，高层建筑的结构分析非常有效。<span class="ff1"> </span></div><div class="t m0 x4 h5 y1c ff1 fs3 fc0 sc0 ls0 ws0"> <span class="ff5">瞬态、<span class="_ _0"></span>大变形、<span class="_ _0"></span>高级材料的碰撞问题必须用非线性有限元分析来计算。<span class="_ _0"></span>线性分析</span></div><div class="t m0 x5 h5 y1d ff5 fs3 fc0 sc0 ls0 ws0">在这种情况下是不适用的。<span class="_ _2"></span>以往有一些专门的软件来分析碰撞问题，<span class="_ _2"></span>但现在<span class="_ _3"> </span><span class="ff1">ABAQUS<span class="_ _1"> </span></span>在</div><div class="t m0 x5 h5 y1e ff5 fs3 fc0 sc0 ls0 ws0">通用有限元软件包就能解决这些问题。所以，<span class="ff1">ABAQUS<span class="_ _1"> </span></span>可以在一个软件完成线性和非线</div><div class="t m0 x5 h5 y1f ff5 fs3 fc0 sc0 ls0 ws0">性分析。<span class="ff1"> </span></div><div class="t m0 x4 h5 y20 ff1 fs3 fc0 sc0 ls0 ws0">ABAQUS<span class="_ _1"> </span><span class="ff5">给用户提供了强大二次开发接口，尤其是在材料本构方面，给用户开发符</span></div><div class="t m0 x5 h5 y21 ff5 fs3 fc0 sc0 ls0 ws0">合实际工程的材料本构模型提供了强大帮助，<span class="_ _5"></span>本文将针对其用户材料子程序展开研究，</div><div class="t m0 x5 h5 y22 ff5 fs3 fc0 sc0 ls0 ws0">总结常用材料模型的开发方法。</div></div></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div>
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<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/624f287474bc5c010525d678/bg3.jpg"><div class="c x0 y1 w2 h0"><div class="t m0 x1 h2 y23 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x2 h3 y3 ff2 fs1 fc0 sc0 ls0 ws0"> </div></div><div class="c x6 y24 w3 h6"><div class="t m0 x0 h3 y25 ff2 fs1 fc0 sc0 ls0 ws0">1<span class="fc1 sc0"> </span></div></div><div class="c x0 y1 w2 h0"><div class="t m0 x7 h4 y26 ff3 fs2 fc0 sc1 ls0 ws0">目<span class="ff4"> </span>录<span class="ff4"> </span></div><div class="t m0 x1 h4 y27 ff4 fs2 fc0 sc1 ls0 ws0"> </div><div class="t m0 x5 h7 y28 ff5 fs3 fc0 sc0 ls0 ws0">摘<span class="ff2"> <span class="_"> </span></span>要<span class="ff2"> <span class="_ _2"></span>................................<span class="_ _6"></span>......................................................................................................... <span class="_ _4"></span>I<span class="fs0"> </span></span></div><div class="t m0 x5 h7 y29 ff2 fs3 fc0 sc0 ls0 ws0">ABSTRACT <span class="_ _0"></span>............................................................................................................................<span class="_ _6"></span> <span class="_ _0"></span><span class="ls1">II<span class="fs0 ls0"> </span></span></div><div class="t m0 x5 h7 y2a ff2 fs3 fc0 sc0 ls0 ws0">1.<span class="fs0"> <span class="_ _7"> </span></span><span class="ff5">绪论</span> <span class="_ _2"></span>................................<span class="_ _6"></span>................................................................................................... <span class="_ _8"></span>1<span class="fs0"> </span></div><div class="t m0 x4 h7 y2b ff2 fs3 fc0 sc0 ls0 ws0">1.1.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">课题的研究背景</span> <span class="_ _4"></span>..................................................................................................... <span class="_ _8"></span>1<span class="fs0"> </span></div><div class="t m0 x4 h7 y2c ff2 fs3 fc0 sc0 ls0 ws0">1.2.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">本文的研究内容和方法</span> <span class="_ _4"></span>......................................................................................... <span class="_ _8"></span>2<span class="fs0"> </span></div><div class="t m0 x5 h7 y2d ff2 fs3 fc0 sc0 ls0 ws0">2.<span class="fs0"> <span class="_ _7"> </span></span><span class="ff5">基于<span class="_ _1"> </span></span>ABAQUS<span class="_"> </span><span class="ff5">软件的二次开发</span> <span class="_ _5"></span>..................................................................................... <span class="_ _8"></span>3<span class="fs0"> </span></div><div class="t m0 x4 h7 y2e ff2 fs3 fc0 sc0 ls0 ws0">2.1.<span class="fs0"> <span class="_ _9"> </span></span>ABAQUS<span class="_"> </span><span class="ff5">介绍</span> <span class="_ _0"></span>....................................................................................................... <span class="_ _8"></span>3<span class="fs0"> </span></div><div class="t m0 x4 h7 y2f ff2 fs3 fc0 sc0 ls0 ws0">2.2.<span class="fs0"> <span class="_ _9"> </span></span>ABAQUS<span class="_"> </span><span class="ff5">各模块简介</span> <span class="_ _0"></span>........................................................................................... <span class="_ _8"></span>3<span class="fs0"> </span></div><div class="t m0 x4 h7 y30 ff1 fs3 fc0 sc0 ls0 ws0">2.3.<span class="ff2 fs0"> <span class="_ _6"></span><span class="fs3">ABAQUS<span class="_"> </span><span class="ff5">的二次开发平台</span> <span class="_ _5"></span>.................................................................................... <span class="_ _8"></span>5<span class="fs0"> </span></span></span></div><div class="t m0 x4 h7 y31 ff1 fs3 fc0 sc0 ls0 ws0">2.4.<span class="ff2 fs0"> <span class="_ _6"></span><span class="fs3">ABAQUS<span class="_"> </span><span class="ff5">的二次开发语言</span> <span class="_ _5"></span>.................................................................................... <span class="_ _8"></span>6<span class="fs0"> </span></span></span></div><div class="t m0 x5 h7 y32 ff2 fs3 fc0 sc0 ls0 ws0">3.<span class="fs0"> <span class="_ _7"> </span></span><span class="ff5">用户材料子程序<span class="_ _1"> </span></span>UMA<span class="_ _2"></span>T<span class="_ _a"></span> <span class="_ _5"></span>................................................................<span class="_ _6"></span>................................... <span class="_ _8"></span>8<span class="fs0"> </span></div><div class="t m0 x4 h7 y33 ff2 fs3 fc0 sc0 ls0 ws0">3.1.<span class="fs0"> <span class="_ _9"> </span></span>UMA<span class="_ _b"></span>T<span class="_"> </span><span class="ff5">开发环境设置</span> <span class="_ _a"></span>............................................................................................ <span class="_ _8"></span>8<span class="fs0"> </span></div><div class="t m0 x4 h7 y34 ff2 fs3 fc0 sc0 ls0 ws0">3.2.<span class="fs0"> <span class="_ _9"> </span></span>UMA<span class="_ _b"></span>T<span class="_"> </span><span class="ff5">注意事项</span> <span class="_ _a"></span>.................................................................................................... <span class="_ _8"></span>9<span class="fs0"> </span></div><div class="t m0 x4 h7 y35 ff1 fs3 fc0 sc0 ls0 ws0">3.3.<span class="ff2 fs0"> <span class="_ _6"></span><span class="fs3">UMA<span class="_ _b"></span>T<span class="_"> </span><span class="ff5">接口的原理</span> <span class="_ _8"></span>............................................................................................... <span class="_ _8"></span>10<span class="fs0"> </span></span></span></div><div class="t m0 x4 h7 y36 ff1 fs3 fc0 sc0 ls0 ws0">3.4.<span class="ff2 fs0"> <span class="_ _6"></span><span class="fs3">UMA<span class="_ _b"></span>T<span class="_"> </span><span class="ff5">的使用方法</span> <span class="_ _8"></span>............................................................................................... <span class="_ _8"></span>12<span class="fs0"> </span></span></span></div><div class="t m0 x5 h7 y37 ff2 fs3 fc0 sc0 ls0 ws0">4.<span class="fs0"> <span class="_ _7"> </span></span><span class="ff5">材料非线性问题</span> <span class="_ _0"></span>............................................................................................................. <span class="_ _8"></span>14<span class="fs0"> </span></div><div class="t m0 x4 h7 y38 ff2 fs3 fc0 sc0 ls0 ws0">4.1.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">材料的弹塑性本构关系</span> <span class="_ _4"></span>....................................................................................... <span class="_ _8"></span>14<span class="fs0"> </span></div><div class="t m0 x4 h7 y39 ff2 fs3 fc0 sc0 ls0 ws0">4.2.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">非线性有限元算法理论</span> <span class="_ _4"></span>....................................................................................... <span class="_ _8"></span>17<span class="fs0"> </span></div><div class="t m0 x4 h7 y3a ff2 fs3 fc0 sc0 ls0 ws0">4.3.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">增量理论常刚度法公式推导</span> <span class="_ _4"></span>............................................................................... <span class="_ _8"></span>20<span class="fs0"> </span></div><div class="t m0 x4 h7 y3b ff2 fs3 fc0 sc0 ls0 ws0">4.4.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">增量理论切线刚度法公式推导</span> <span class="_ _4"></span>........................................................................... <span class="_ _8"></span>21<span class="fs0"> </span></div><div class="t m0 x5 h7 y3c ff2 fs3 fc0 sc0 ls0 ws0">5.<span class="fs0"> <span class="_ _7"> </span></span>UMA<span class="_ _b"></span>T<span class="_"> </span><span class="ff5">程序设计和编码</span> <span class="_ _8"></span>................................................................................................. <span class="_ _8"></span>25<span class="fs0"> </span></div><div class="t m0 x4 h7 y3d ff2 fs3 fc0 sc0 ls0 ws0">5.1.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">本构关系描述</span> <span class="_ _4"></span>....................................................................................................... <span class="_ _8"></span>25<span class="fs0"> </span></div><div class="t m0 x4 h7 y3e ff2 fs3 fc0 sc0 ls0 ws0">5.2.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">常刚度法程序设计</span> <span class="_ _4"></span>............................................................................................... <span class="_ _8"></span>27<span class="fs0"> </span></div><div class="t m0 x4 h7 y3f ff2 fs3 fc0 sc0 ls0 ws0">5.3.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">常刚度法程序编码</span> <span class="_ _4"></span>............................................................................................... <span class="_ _8"></span>29<span class="fs0"> </span></div><div class="t m0 x4 h7 y40 ff2 fs3 fc0 sc0 ls0 ws0">5.4.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">切线刚度法程序设计</span> <span class="_ _4"></span>........................................................................................... <span class="_ _8"></span>32<span class="fs0"> </span></div><div class="t m0 x4 h7 y41 ff2 fs3 fc0 sc0 ls0 ws0">5.5.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">切线刚度法程序编码</span> <span class="_ _4"></span>........................................................................................... <span class="_ _8"></span>36<span class="fs0"> </span></div><div class="t m0 x4 h7 y42 ff2 fs3 fc0 sc0 ls0 ws0">5.6.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">程序的调试</span> <span class="_ _4"></span>........................................................................................................... <span class="_ _8"></span>39<span class="fs0"> </span></div><div class="t m0 x5 h7 y43 ff2 fs3 fc0 sc0 ls0 ws0">6.<span class="fs0"> <span class="_ _7"> </span></span><span class="ff5">程序验证</span> <span class="_ _2"></span>................................<span class="_ _6"></span>......................................................................................... <span class="_ _8"></span>40<span class="fs0"> </span></div></div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a 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data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div>
<div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/624f287474bc5c010525d678/bg4.jpg"><div class="c x0 y1 w2 h0"><div class="t m0 x1 h3 y44 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x5 h3 y3 ff2 fs1 fc0 sc0 ls0 ws0"> </div></div><div class="c x6 y45 w4 h8"><div class="t m0 x0 h2 y46 ff1 fs0 fc0 sc0 ls0 ws0">2<span class="fc1 sc0"> </span></div></div><div class="c x0 y1 w2 h0"><div class="t m0 x4 h7 y47 ff2 fs3 fc0 sc0 ls0 ws0">6.1.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">问题描述</span> <span class="_ _4"></span>............................................................................................................... <span class="_ _8"></span>41<span class="fs0"> </span></div><div class="t m0 x4 h7 y48 ff2 fs3 fc0 sc0 ls0 ws0">6.2.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">本构关系</span> <span class="_ _4"></span>............................................................................................................... <span class="_ _8"></span>42<span class="fs0"> </span></div><div class="t m0 x4 h7 y49 ff2 fs3 fc0 sc0 ls0 ws0">6.3.<span class="fs0"> <span class="_ _9"> </span></span>ABAQUS<span class="_"> </span><span class="ff5">自带材料模型计算</span> <span class="_ _0"></span>............................................................................. <span class="_ _8"></span>42<span class="fs0"> </span></div><div class="t m0 x4 h7 y4a ff2 fs3 fc0 sc0 ls0 ws0">6.4.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">常刚度法的<span class="_ _1"> </span></span>UMA<span class="_ _b"></span>T<span class="_"> </span><span class="ff5">验证</span> <span class="_ _a"></span>..................................................................................... <span class="_ _8"></span>44<span class="fs0"> </span></div><div class="t m0 x4 h7 y4b ff2 fs3 fc0 sc0 ls0 ws0">6.5.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">切线刚度法的<span class="_ _1"> </span></span>UMA<span class="_ _b"></span>T<span class="_"> </span><span class="ff5">验证</span> <span class="_ _a"></span>................................................................................. <span class="_ _8"></span>46<span class="fs0"> </span></div><div class="t m0 x4 h7 y4c ff2 fs3 fc0 sc0 ls0 ws0">6.6.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">两种算法的比较分析</span> <span class="_ _4"></span>........................................................................................... <span class="_ _8"></span>48<span class="fs0"> </span></div><div class="t m0 x5 h7 y4d ff2 fs3 fc0 sc0 ls0 ws0">7.<span class="fs0"> <span class="_ _7"> </span></span><span class="ff5">结论与展望</span> <span class="_ _2"></span>................................<span class="_ _6"></span>..................................................................................... <span class="_ _8"></span>52<span class="fs0"> </span></div><div class="t m0 x4 h7 y4e ff2 fs3 fc0 sc0 ls0 ws0">7.1.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">结论</span> <span class="_ _4"></span>....................................................................................................................... <span class="_ _8"></span>52<span class="fs0"> </span></div><div class="t m0 x4 h7 y4f ff2 fs3 fc0 sc0 ls0 ws0">7.2.<span class="fs0"> <span class="_ _9"> </span></span><span class="ff5">展望</span> <span class="_ _4"></span>....................................................................................................................... <span class="_ _8"></span>52<span class="fs0"> </span></div><div class="t m0 x5 h7 y50 ff5 fs3 fc0 sc0 ls0 ws0">致<span class="ff2"> <span class="_"> </span></span>谢<span class="ff2"> <span class="_ _2"></span>................................<span class="_ _6"></span>...................................................................................................... <span class="_ _8"></span>54<span class="fs0"> </span></span></div><div class="t m0 x5 h7 y51 ff5 fs3 fc0 sc0 ls0 ws0">参考文献<span class="ff2"> <span class="_ _2"></span>................................<span class="_ _6"></span>................................................................................................ <span class="_ _8"></span>55<span class="fs0"> </span></span></div><div class="t m0 x5 h7 y52 ff5 fs3 fc0 sc0 ls0 ws0">附<span class="_ _1"> </span><span class="ff2">1</span>：<span class="ff2">ABAQUS<span class="_"> </span></span>自带弹塑性材料验证的<span class="_ _1"> </span><span class="ff2">INP<span class="_"> </span></span>文件<span class="ff2"> <span class="_ _a"></span>........................................................... <span class="_ _5"></span>56<span class="fs0"> </span></span></div><div class="t m0 x5 h7 y53 ff5 fs3 fc0 sc0 ls0 ws0">附<span class="_ _1"> </span><span class="ff2">2</span>：用于算法验证的<span class="_ _1"> </span><span class="ff2">INP<span class="_"> </span></span>文件<span class="ff2"> <span class="_ _5"></span>......................................................................................... <span class="_ _8"></span>62<span class="fs0"> </span></span></div><div class="t m0 x1 h9 y54 ff4 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h9 y55 ff4 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h9 y56 ff4 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h9 y57 ff4 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h9 y58 ff4 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h9 y59 ff4 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h9 y5a ff4 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h9 y5b ff4 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h9 y5c ff4 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h9 y5d ff4 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h9 y5e ff4 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h9 y5f ff4 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h9 y60 ff4 fs4 fc0 sc0 ls0 ws0"> </div></div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" 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<div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/624f287474bc5c010525d678/bg5.jpg"><div class="c x0 y1 w2 h0"><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x2 h3 y3 ff2 fs1 fc0 sc0 ls0 ws0"> </div></div><div class="c x8 y24 w5 ha"><div class="t m0 x0 h3 y61 ff2 fs1 fc0 sc0 ls0 ws0">I<span class="fc1 sc0"> </span></div></div><div class="c x0 y1 w2 h0"><div class="t m0 x9 hb y62 ff3 fs4 fc0 sc0 ls0 ws0">摘<span class="ff2"> <span class="_"> </span></span>要<span class="ff2"> </span></div><div class="t m0 x1 h9 y63 ff4 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x5 h7 y64 ff2 fs3 fc0 sc0 ls2 ws0"> <span class="ls0">ABAQUS<span class="_"> </span><span class="ff5">软件功能强大，<span class="_ _a"></span>特别是能够模拟复杂的非线性问题，它包括了多种材料</span></span></div><div class="t m0 x5 h5 y65 ff5 fs3 fc0 sc0 ls0 ws0">本构关系及失效准则模型，并具有良好的开放性，提供了若干个用户子程序接口，允</div><div class="t m0 x5 h7 y66 ff5 fs3 fc0 sc0 ls0 ws0">许用户以代码的形式来扩展主程序的功能。<span class="ff2"> </span></div><div class="t m0 x5 h7 y67 ff2 fs3 fc0 sc0 ls2 ws0"> <span class="ff5 ls0">本文主要研究了<span class="_ _1"> </span><span class="ff2">ABAQUS<span class="_"> </span></span>用户子程序<span class="_ _1"> </span><span class="ff2">UMA<span class="_ _b"></span>T<span class="_"> </span><span class="ff5">的开发方法，采用<span class="_ _1"> </span></span>FOR<span class="_ _0"></span>TRAN<span class="_"> </span><span class="ff5">语言</span></span></span></div><div class="t m0 x5 h5 y68 ff5 fs3 fc0 sc0 ls0 ws0">编制了各向同性硬化材料模型的接口程序，研究该类材料的弹塑性本构关系极其实现</div><div class="t m0 x5 h7 y69 ff5 fs3 fc0 sc0 ls0 ws0">方法。<span class="ff2"> </span></div><div class="t m0 x5 h7 y6a ff2 fs3 fc0 sc0 ls2 ws0"> <span class="ff5 ls0">本文紧紧围绕<span class="_ _1"> </span><span class="ff2">UMA<span class="_ _b"></span>T<span class="_"> </span><span class="ff5">的二次开发技术，首先对其接口原理做了详细介绍，然后针</span></span></span></div><div class="t m0 x5 h5 y6b ff5 fs3 fc0 sc0 ls0 ws0">对非线性有限元增量理论中的常刚度法和切线刚度法的算法理论做了深入的剖析，推</div><div class="t m0 x5 h5 y6c ff5 fs3 fc0 sc0 ls0 ws0">导出了常刚度法和切线刚度法的算法理论的具体表达式，然后分别编制了两种算法的</div><div class="t m0 x5 h7 y6d ff2 fs3 fc0 sc0 ls0 ws0">UMA<span class="_ _b"></span>T<span class="_"> </span><span class="ff5">程序，<span class="_ _5"></span>最后建立了一个具体的验算模型，<span class="_ _5"></span>通过与<span class="_ _1"> </span><span class="ff2">AB<span class="_ _a"></span>AQUS<span class="_"> </span><span class="ff5">自带弹塑性本构关系</span></span></span></div><div class="t m0 x5 h7 y6e ff5 fs3 fc0 sc0 ls0 ws0">的计算结果相比较，验证两者的正确性。<span class="ff2"> </span></div><div class="t m0 x5 h7 y6f ff2 fs3 fc0 sc0 ls2 ws0"> <span class="ff5 ls0">本文还对常刚度法和切线刚度法得算法效率做了对比，<span class="_ _5"></span>得出了在非线性程度较高时</span></div><div class="t m0 x5 h7 y70 ff5 fs3 fc0 sc0 ls0 ws0">切线刚度法效率高于常刚度法的结论。<span class="ff2"> </span></div><div class="t m0 x5 h7 y71 ff2 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x5 h5 y72 ff3 fs3 fc0 sc0 ls0 ws0">关键字：<span class="ff4"> ABAQUS</span>、<span class="ff4">UMAT</span>、有限元、材料非线性、<span class="ff4">FORTRAN</span>、切线刚度<span class="ff4"> </span></div><div class="t m0 x5 h5 y73 ff4 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x5 h5 y74 ff4 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x5 h5 y75 ff4 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x5 h5 y76 ff4 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x5 h5 y77 ff4 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x5 h5 y78 ff4 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x5 h5 y79 ff4 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x5 h5 y7a ff4 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x5 h5 y7b ff4 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x5 h5 y7c ff4 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x5 h5 y7d ff4 fs3 fc0 sc0 ls0 ws0"> </div></div></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div>
