Probabilistic Nonlinear Analysis of Steel Frame Safety Under Extreme Wind Impact

[摘要] In this paper dynamic numerical analysis concerning mechanical wave intensity reduction via rubber material insert/inject in a typical wall concrete block is discussed. Numerical model consists of a single block with a rubber strip and rounded cuboids inserted/injected from the top to the bottom surface of that block. Due to adopted rubber inserts/injects dimensions and cross section area, influence on concrete block compressive strength can be neglected. Mechanical wave propagation is forced through an impact of inclined concentrated force applied to the front block surface on the offset from side block surface. That impact load arises in a very small time step and furtherly its value is changed to zero. According to that mechanical wave propagation may be observed in the form of stress plots plotted in a given time step. Through the numerical analysis it is shown that in case of composite made of concrete-rubber there is a possibility to reduce the mechanical wave propagation by around 25% in comparison to the solid concrete block.

[关键词] Safety;reliability;risk;fragility;nuclear power plant;probability;experiment;wind;ANSYS;FLUENT;FReET.