L. Godoy - Academia.edu (original) (raw)

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Papers by L. Godoy

Research paper thumbnail of On load interaction in the non linear buckling analysis of cylindrical shells

Advances in Engineering Software, 1991

The elastic stability of shells or shell-like structures under two independent load parameters is... more The elastic stability of shells or shell-like structures under two independent load parameters is considered. One of the loads is associated to a limit point form of buckling, whereas the second is a bifurcation. A simple one degree of freedom mechanical system is first investigated, for which an analytical solution is possible. Next, a cylindrical shell under the combined action of axial load and localised lateral pressure is studied via a non linear, two-dimensional, finite ele ment discretization. It is shown that both problems display the same general behaviour, with a stability boundary in the load space which is convex towards the region of stability. The results show the need of performing a full non-linear analysis to evaluate the stability boundary for the class of interaction prob lems considered.

Research paper thumbnail of On load interaction in the non linear buckling analysis of cylindrical shells

Advances in Engineering Software, 1991

The elastic stability of shells or shell-like structures under two independent load parameters is... more The elastic stability of shells or shell-like structures under two independent load parameters is considered. One of the loads is associated to a limit point form of buckling, whereas the second is a bifurcation. A simple one degree of freedom mechanical system is first investigated, for which an analytical solution is possible. Next, a cylindrical shell under the combined action of axial load and localised lateral pressure is studied via a non linear, two-dimensional, finite ele ment discretization. It is shown that both problems display the same general behaviour, with a stability boundary in the load space which is convex towards the region of stability. The results show the need of performing a full non-linear analysis to evaluate the stability boundary for the class of interaction prob lems considered.

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