Abstract
This paper presents a nonlinear finite element analysis of structures comprising thin-walled rectangular hollow sections. Nonlinearities due to both the change of geometry and material yielding are included, incorporataing also the effects of strain-unloading. The geometry and the stiffness of the elements are modified and used to update the structure tangent stiffness matrix. An iterative procedure combining the arc-length and the work methods is employed for the solution of the incremental equation of equilibrium. The method has been applied successfully to predict the nonlinear load-deflection behavior of isolated cold-formed SHS columns, fabricated RHS parabolic fixed end arches, and double chord SHS trusses having different joint configurations.
Original language | English |
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Journal | Research Report Series - University of Queensland, Department of Civil Engineering |
Issue number | CE79 |
Publication status | Published - 1 Jan 1987 |
Externally published | Yes |
ASJC Scopus subject areas
- General Medicine