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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2000, Vol. 1 Issue (3): 284-290    DOI: 10.1631/jzus.2000.0284
Science & Engineering     
AN IMPROVED AXISYMMETRIC WILSON NONCONFORMING FINITE ELEMENT METHOD FOR STRESS ANALYSIS
ZHANG Wu, DESAI, C.S., YONG, Y.K.,
Dept. of Civil Engineering, Zhejiang University, Hangzhou,310027, China; Dept. of Civil Engineering and Engineering Mechanics, University of Arizona, Arizona, 85721,USA; Dept. of Civil and Environmental Engineering, Rutgers University, New Jersey, 08855,USA
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Abstract  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.

Key words： nonconforming finite element      axisymmetric Wilson element      patch test condition      convergence      spurious shear stress     
Received: 12 May 1999     
CLC:  O39: TB12  
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ZHANG Wu
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ZHANG Wu, DESAI, C.S., YONG, Y.K.,. AN IMPROVED AXISYMMETRIC WILSON NONCONFORMING FINITE ELEMENT METHOD FOR STRESS ANALYSIS. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2000, 1(3): 284-290.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2000.0284     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2000/V1/I3/284

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