Review article

Numerical modelingof a composite section element from thin-walled profiles taking into account the initial geometric imperfections

UDC: 

539.4

DOI: 

10.23968/1999-5571-2020-17-1-82-86

Pages: 

82-86

Annotation: 

The article describes the process of numerical simulation of a composite symmetric section element made of thin-walled Sigma profiles operating under conditions of longitudinal compressive force with bending, taking into account the initial geometric imperfections. At numerical modeling, the main criterion of the load-bearing capacity exhaustion in case of eccentric compression is the stability loss in one of the forms. However, for thin-walled elements, the loss of local stability does not mean that the load-bearing capacity is completely exhausted, since the element continues to carry the load, but to a lesser extent. Therefore, simulation was carried out in two stages: initially, in the elastic formulation, the possible buckling modes were determined, afterwards, there was made calculation on the deformed pattern taking into account possible imperfections.

Authors: 

Prostakishina D. A. Industrial University of Tyumen

Korsun N. D. Industrial University of Tyumen

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