Elastoplastic and Geometrically Nonlinear Thin Shell Analysis by the Semiloof Element

• Type: Article in International Scientific Journal
• Date: 1981

Authors

Rogério A. F. Martins (Author) FEUP; D. Owen (Author) Other

Journal

Title: Computers and Structures

Vol. 13

Pages: 505-513

ISSN: 0045-7949

Publisher: Elsevier

Other information

DOI: 10.1016/0045-7949(81)90045-6

Abstract (EN): This paper extends the use of the Semiloof shell element to geometrically and materially nonlinear situations. For the geometrically nonlinear analysis a moving coordinate process is used. Local coordinate systems are considered, one at each integrating point, which move with the structure and allow deformation and rotation within the element to be taken into account. For elasto-plastic analysis the initial stress method is used and the yield conditions are expressed in terms of nondimensional stress resultants. The element formulation is briefly considered and in particular the definition of the global and local displacements and their first and second derivatives in the non-constrained and constrained form of the element are discussed. Numerical results are presented and comparisons made with other sources where available. © 1981.

Language: English

Type (Professor's evaluation): Scientific