| 田云德,秦世伦.梯度厚板热应力分层计算方法的改进[J].计算力学学报,2009,26(6):961~965 |
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| 梯度厚板热应力分层计算方法的改进 |
| The improvement of stratified method about thermal stress of functionally gradient material thick plates |
| 投稿时间：2007-11-21 |
| DOI：10.7511/jslx20096034 |
| 中文关键词: 分层方法 功能梯度材料厚板 热力系数 热应力 |
| 英文关键词:stratified method FGM thick plates thermal and mechanical coefficient thermal stress |
| 基金项目: |
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| 摘要点击次数: 1779 |
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| 中文摘要: |
| 为了使功能梯度材料厚板的分层计算具有更快的收敛速度和更好的精度,而采用每层热力系数与梯度材料厚度变化为指数函数的分层方法,来平滑均匀分层法引起材料热力系数的跳跃,使热力系数更逼近实际,并将该方法命名为指数函数有限分层法。通过算例表明,在精度为0.1的情况下,均匀分层法的分层层数是指数函数分层法的分层层数的2倍多,并且随着精度的提高,分层层数相差的倍数就越大。 |
| 英文摘要: |
| In order to produce better convergence and higher precision on stratified calculation of Functionally Gradient Material (FGM) thick plates, the method which the thermal and mechanical properties of Functionally Gradient Material thick plates layer-each has the same exponential law dependence on the thickness-coordinate is being used. It smoothes impulsive thermal and mechanics coefficient which caused by the thick plates layer-each of uniformity law, and it named exponential finite stratified method. Through examples, the result is compared the thick plates layer-each of the exponential law with the thick plates layer-each of uniformity law, under 0.1 precision, the layers of the exponential stratified method is of 250％ than the uniformity stratified method, and along with the exaltation of the accuracy, the differing multiple of layers is greater. |
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