A six-node pentagonal assumed natural strain solid–shell element

✍ Scribed by K.Y. Sze; W.K. Chan

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 232 KB
• Volume: 37
• Category: Article
• ISSN: 0168-874X
• DOI: 10.1016/s0168-874x(00)00066-4

✦ Synopsis

In this paper, a six-node pentagonal solid}shell element is formulated. Particular attention is focused on alleviating shear, trapezoidal and thickness lockings that plagues the conventional element. While assumed natural strain method is employed to alleviate shear and trapezoidal lockings, a modi"ed generalized laminate sti!ness matrix is proposed to circumvent thickness locking. Unlike the commonly adopted plane stress assumption, the modi"ed laminate sti!ness matrix enables the element to reproduce the exact thickness stress and transverse displacement when the element is loaded by thickness stress. Numerical examples reveal that the element is close in accuracy with other state-of-the-art three-node degenerated shell elements.