AN IMPROVED AXISYMMETRIC WILSON NONCONFORMING FINITE ELEMENT METHOD FOR STRESS ANALYSIS

作     者：张武 DESAI C.S. YONG Y.K. 

出 版 物：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报A辑(应用物理与工程)(英文版))

年 卷 期：2000年第3期

页      面：47-53页

核心收录：

学科分类：07[理学] 070102[理学-计算数学] 0701[理学-数学] 

基　　金：ProjectsupportedbyCAOGuangbiaoHigh TechF .ofZhejiangUniv.(No .U1990 2 ) ZhejiangEdu .CommitteeSRFforOutstandingReturnedOver 

主　　题：nonconforming finite element axisymmetric Wilson element patch test condition convergence spurious shear stress 

摘      要：The Wilson and Taylor elements Q6 and QM6, the representative nonconforming finite element method(FEM), have been successfully developed and implemented in the finite element code SAP for improved displacement and stress analysis. This paper formulates an improved convergent nonconforming axisymmetric element AQM6 over the corresponding axisymmetric Q6 and QM6 elements. The proposed modified nonconforming axisymmetric element AQM6 satisfies the engineering patch test condition for convergence, and also meets the condition for suppression of spurious shear stress by using a special remedying procedure. The numerical test results are in agreement with the element performance.