![]() ![]() At present, a unified perspective is yet to be formed. Engineers, as well as researchers, have since then issued differing explanations on the cause of the accident. On March 15, 2018, the Florida International University (FIU) pedestrian bridge collapsed while under construction. The complexity of the calculation increases greatly due to the damage softening effect of the material. Moreover, the nonlinear behavior of the material also makes convergence difficult and the model difficult to refine. This process makes numerical simulation extraordinarily complicated. From the initial material yielding and damage to the subsequent cracking and failure of the component, until the final structure falls and collides with other parts. The collapse behavior of an engineering structure is a highly nonlinear and discontinuous dynamic process in reality.
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