有限元求解精度研究
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摘要
首先对一实例进行理论计算,然后对其进行有限元分析,并对不同网格划分状态下的模型计算结果与理论结果进行比较。最后对有限元分析误差进行评估及原因分析,并得出有限元分析计算时网格划分并不是越细小越好,关键是"适度"的结论。
In this paper,a certain example was firstly calculated theoretically,then analyzed by ANSYS,and the theoretical result was compared with the FEA results of different meshed molds.Finally,an error evaluation was given about the results by FEA and error reason was also analyzed.So a conclusion that the mesh is not the smaller the better when you analyze through FEA is educed,the key point is to choose a proper mesh size.
In this paper,a certain example was firstly calculated theoretically,then analyzed by ANSYS,and the theoretical result was compared with the FEA results of different meshed molds.Finally,an error evaluation was given about the results by FEA and error reason was also analyzed.So a conclusion that the mesh is not the smaller the better when you analyze through FEA is educed,the key point is to choose a proper mesh size.
引文
[1]徐芝纶.弹性力学(上册)[M].北京:高等教育出版社,1991.
[2]张铜生,张富德.简量有限元法及其应用[M].北京:地震出版社,1990.
[3]龚曙光,谢桂兰,邱爱红,等.CAE仿真分析中计算精度与网格划分关系的探讨[J].现代机械,2003(6):35-38.
[4]高素荷.网格划分密度与有限元求解精度研究[J].重工科技,2006(1):12-15.
[5]高志刚,刘泽明,李娜.复杂模型的ANSYS有限元网格划分研究[J].机械工程与自动化,2006(3):41-43.
[6]王靖,熊晓燕.振动筛下横梁结构的有限元分析[J].机械工程与自动化,2008(1):86-87.
[2]张铜生,张富德.简量有限元法及其应用[M].北京:地震出版社,1990.
[3]龚曙光,谢桂兰,邱爱红,等.CAE仿真分析中计算精度与网格划分关系的探讨[J].现代机械,2003(6):35-38.
[4]高素荷.网格划分密度与有限元求解精度研究[J].重工科技,2006(1):12-15.
[5]高志刚,刘泽明,李娜.复杂模型的ANSYS有限元网格划分研究[J].机械工程与自动化,2006(3):41-43.
[6]王靖,熊晓燕.振动筛下横梁结构的有限元分析[J].机械工程与自动化,2008(1):86-87.
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