首页> 中文期刊>噪声与振动控制 >基于边光滑有限元法的结构振动与稳定性研究

基于边光滑有限元法的结构振动与稳定性研究

     

摘要

用一种新型的数值方法-边光滑有限元方法(edge-based smoothed finite element method, ES-FEM)对梁、板等简单结构的振动与稳定性问题进行分析与研究。光滑有限元方法在计算系统总体刚度矩阵时在构造的光滑域内对应变进行光滑操作,这样得到的刚度矩阵改善了有限元方法过刚的数值缺陷。对梁和板结构在一定边界条件下的振动与稳定性问题的分析结果表明:与其它有限元方法相比,光滑有限元方法提高了数值计算结果的精确度和收敛性。%A novel numerical method, edge-based smoothed finite element method (ES-FEM), is used to analyze vibration and stability problems of beam and plate structures. In the ES-FEM, the system global stiffness matrix is computed using strain-smoothed method over the smoothing domains connected to the edges of the elements. As a result, the smoothing operation can reduce the over-stiffening behavior of the conventional finite element method. Numerical examples of beam and plate structures under special boundary conditions are presented to demonstrate that the ES-FEM can achieve higher accuracy and convergence rate compared with the conventional FEM for structures.

著录项

相似文献

  • 中文文献
  • 外文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号