Snap-through phenomenon of imperfect steel structures
[ 1 ] Instytut Konstrukcji Budowlanych, Wydział Budownictwa i Inżynierii Środowiska, Politechnika Poznańska | [ P ] pracownik
2013
referat
angielski
- steel structures
- stability
- snap-through
- nonlinear analysis
EN In the paper the stability analyses of steel members with initial imperfection are carried out. The results of experiments on steel girders with I section and very thin web are presented. In these experiments an unexpected phenomenon, namely the snap-through of the web was discovered. The authors assigned it to initial imperfections. This behavior is studied by introduction of a model structure composed of rigid bars connected by elastic hinges. Introducing various forms of geometric imperfections into the model structure the similar snap-through response as in experiments was observed and studied.
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