Introduction to Finite and Spectral Element Methods Using MATLAB®Second Edition
This book contains information obtained from authentic and highly regarded sources. Reasonable efforts have been made to publish reliable data and information, but the author and publisher cannot assume responsibility for the validity of all materials or the consequences of their use. The authors and publishers have attempted to trace the copyright holders of all material reproduced in this publication and apologize to copyright holders if permission to publish in this form has not been obtained. If any copyright material has not been acknowledged please write and let us know so we may rectify in any future reprint.
该模型是描述等参矩形平面应力有限元模型。单元参数模型有长度“a”、宽度“b”和恒定厚度“th”,但等参单元模型不需要元素维度。 假设四个角中的每一个在“x”和“y”方向上分别具有两个自由位移“u”和“v”。因此该单元具有总节点力(力对 Fx 和 Fy)和2*节点总位移或节点自由度(四对 u 和 v) 另外,在有限元作为选择公式的方法中,重要的一步是假设相关的位移插值函数,通常是线性度偶然性家族。