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A simplified triangular shell element with a necking criterion for 3-D sheet-forming analysis

✍ Scribed by M. Brunet; F. Sabourin

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 566 KB
Volume: 50
Category: Article
ISSN: 0924-0136
DOI: 10.1016/0924-0136(94)01384-d

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✦ Synopsis

A 3-node triangular shell element with only 3 translational degrees of freedom per node is presented, in which the out-of-plane displacement is the only d.o.f, considered for bending. The bending stiffness matrix of the element is derived by assuming constant curvature normal to the boundary with adjacent elements. An explicit dynamic time integration scheme is implemented for sheet forming analysis. The authors have incorporated in the numerical analysis their necking criterion based on the intrinsic Forming-Limit Stress Diagram.

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A simplified approach for incorporating thickness stress in the analysis of sheet metal forming using shell elements

✍ J. W. Cho; D. Y. Yang; W. J. Chung 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 226 KB

## Abstract A simplified scheme for considering the thickness stress of shell elements induced by contact is presented which improves the accuracy of sheet metal forming analysis. The yield function formulated on the basis of plane stress conditions is modified to incorporate the effect of transver