引用本文: 郭洋, 武亚涛, 聂玉峰. 组合杂交法与ANSYS软件计算精度比较研究[J]. 力学与实践, 2011, 33(3): 56-58.
Yufeng NIE. COMPUTATIONAL ACCURACY OF COMBINED HYBRID METHOD AS COMPARED WITH ANSYS SOFTWARE[J]. MECHANICS IN ENGINEERING, 2011, 33(3): 56-58.
 Citation: Yufeng NIE. COMPUTATIONAL ACCURACY OF COMBINED HYBRID METHOD AS COMPARED WITH ANSYS SOFTWARE[J]. MECHANICS IN ENGINEERING, 2011, 33(3): 56-58.

## COMPUTATIONAL ACCURACY OF COMBINED HYBRID METHOD AS COMPARED WITH ANSYS SOFTWARE

• 摘要: 为探索8节点六面体组合杂交元方法(CHH(0-1))的计算效率和精度, 并正确认识ANSYS软件计算结果的可靠性, 本文以板弯曲模型为例, 分别用CHH(0-1)元、ANSYS软件中的8节点brick元、20节点brick元对该模型进行求解．经过对位移及应力计算结果的比较分析,得知ANSYS软件中的8节点brick元实际是Wilsonbrick元, 当网格规则时位移计算结果可靠, 但应力计算结果精度差, 20节点brick元计算非常耗时, 应力计算精度也不高, 而CHH(0-1)元用较少的计算量便可得到高精度的位移、应力计算结果．

Abstract: This paper studies the computational efficiency andaccuracy of the eight-node hexahedral combined hybrid element (CHH (0-1)), and the reliability of data from ANSYS software.The bending plate model is taken as a test problem to be solved by CHH (0-1)element, 8-node brick element and 20-node brick element in ANSYSsoftware,respectively. A comparison of the displacement and stress results shows that the so-called 8-node brickelement in ANSYS software is the Wilson brick element actually, which gives reliable displacement results, but its computational accuracyfor stress is poor. The 20-node brick element is very time-consumingand the computational accuracy of stress results is not so good. But CHH(0-1) element can achieve a high-precision for both displacement and stresswith less cost.

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