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advances in steel structures pdf

The paper describes the development of numerical models for analysing stainless steel plates in
compression. Material tests on coupons cut in the longitudinal, transverse and diagonal directions are included as are the results of tests on stainless steel plates. Detailed comparisons are made between the experimental and numerical ultimate loads and load-displacement curves.

It is shown that excellent agreement with tests can be achieved by using the compressive stress-strain curve pertaining to the longitudinal direction of loading.
The effect of anisotropy is investigated using elastic-perfectly-plastic material models, where the
anisotropic material model is based on Hill’s theory. The models indicate that the effect of anisotropy
is small and that it may not be required to account for anisotropy in the modelling of stainless steel
plates in compression.

Stainless steel alloys are found in a wide range of structural applications, including two and three
dimensional truss structures, canopy structures and other roof structures featuring the aesthetic appeal of the material, including roof sheeting. The thickness is often kept at a minimum to reduce the relatively high material cost and achieve solutions with high strength to weight ratios. Many structural applications are cold-formed and may suffer from local or distortional buckling in their ultimate limit state.

Despite the prevalence of local buckling in the design of stainless steel structural members, little
research data exists and the available research (Johnson and Winter 1966, van den Berg 2000, SCI
2000) is primarily experimental. The present paper forms part of an ongoing investigation into the
strength of stainless steel plate elements. It describes the development of finite element models which incorporate the material characteristics of stainless steel alloys. The models are shown to produce good agreement with tests on stainless steel plates. They are currently being used to produce data for the design of stainless steel plates in compression, as will be described in a companion paper.