基于连续体壳扩展有限元的面向目标误差估计

来源 :2013中国力学大会 | 被引量 : 0次 | 上传用户：kaka3456

【摘要】

：

针对三维问题中的基于连续体壳单元中扩展有限元的计算,利用含裂纹的Reissner型板理论构造了偶问题的等效力边界形式,并针对基于连续体壳单元的求解方式修改了扩展的面向目标误差估计中的能量积分形式.用以上算法对基于连续体壳扩展有限元求解的面内和弯曲加载形式下裂尖应力强度因子的误差进行了估计计算,研究了壳体断裂问题扩展有限元仿真的可靠性,通过与应力强度因子手册中的参考解对比,检验了算法.

【作者】

：

庄茁林治家

【机构】

：

清华大学航天航空学院,北京100084 ABB集团中国研究中心,北京100015

【出处】

：

2013中国力学大会

【发表日期】

：

2013年2期

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