تحليل پارامتريك رفتارغيرخطي لوله اي شكل تحت بار جانبي ديناميكي

Parametric Analysis ofNonlinear Behavior ofTubular Members under Lateral Dynamic Loads

Non-linear behavior of tubular members with axial pre-load is studied against dynamic lateral impact. Nonlinear behavior of these members would be due to material non-linearity (NLM) or geometric nonlinearity (NLG). Study of the curves of load displacement of arbitrary tubular member by analytical solutions indicates that changes in parameters such as pipe thickness, magnitude of axial pre-loading, and end conditions of the member under study has significant affect on their residual strength subject to application of dynamic lateral impact. Based on this analysis, a reliable method for calculation of residual strength of tubular member is proposed. The results of the compari son between the two methods using quasi-static and dynamic analyses are shown in a diagram. In addition, to measure the reliability of the model it has been validated using available test results from the literatures.