In approximate system instability analysis it is common practice to simplify by considering isolated members with end restraints that to some extent reflect the interaction with the surrounding structure. Buthling modes ...

The Shanley model concept is used for simulating the elastic non-linear interaction between local buckling and overall buckling of thin-walled columns subjected to axial compression. The spring foundation is given a general ...

The report summarizes the work performed at the Department of Mathematics, during the first year of the European research project GITEC-TWO (contract ENV4-U96-0297). Some of the result will subsequently be published elsewhere ...

The perturbation method is applied in an incremental scheme for tracing non-linear equilibrium paths of structures which are subjected to a set of simultaneously acting external loads. The method is based on the discretesized ...