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Abstract：
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A new restricted-freedom element model is proposed, which is to avoid the disadvantageof the absence of the transverse shear stresses in membrane elements, the failure when large local rota-tion occurred in shell elements, and the ill-conditioned equations while using three-dimensional solid ele-ments. The validity is examined by compare the theoretically calculated results with the experimental results.
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AuthorIntro：
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Reference：
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1 S Ahmad,B M Irons& O C Zienkiewicz. Analysis ofThick and Thin Shell Structures by Curved Finite Elements.Int.J. Num. Meth. Engng, 1970(2): 419~451
2 K J hthe. Finite Element Procedures in EngineeringAnalysis.Prentice-Hall Inc.,Englewood Cliffs,New Jersey.1982.
3张卫东,阮雪输,吴公明.板料成形过程的三维数值模拟.模具技术.1997(1):3
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