Computational & Technology Resources
an online resource for computational,
engineering & technology publications
Civil-Comp Proceedings
ISSN 1759-3433
CCP: 19
Edited by: B.H.V. Topping
Paper IV.4

Alternative Approach for Hybrid Stress Elements with Incompatible Displacements

Y.F. Dong and J.A. Teixeira de Freitas

Departmenta de Engenharia Civil, Universidade Tecnica de Lisboa, Lisbon, Portugal

Full Bibliographic Reference for this paper
Y.F. Dong, J.A. Teixeira de Freitas, "Alternative Approach for Hybrid Stress Elements with Incompatible Displacements", in B.H.V. Topping, (Editor), "Developments in Computational Engineering Mechanics", Civil-Comp Press, Edinburgh, UK, pp 99-105, 1993. doi:10.4203/ccp.19.4.4
An alternative approach for the formulation of hybrid stress elements is presented. A modified Hellinger-Reissner principle is used to relax the patch test under distorted meshes. Interpolation on isoparametric coordinates is used in both displacement and stress. The stress distribution is obtained by tensor transformation on some stress terms. Based on this approach, a 4-node planar element and a 8-node solid element are developed. Numerical testing enhances the good performance of these hybrid stress elements in the estimation of both stresses and displacements in elastostatic problems.

purchase the full-text of this paper (price £20)

go to the previous paper
go to the next paper
return to the table of contents
return to the book description
purchase this book (price £58 +P&P)