Research on the Characteristics of Steel Frame Node under Explosive and Impact Load

Abstract

With the characteristics of huge energy,short acting time and large destructiveness, Explosive and Impact Load leads a large punching force towards construction units. Once happened, it can cause serious of damaging effects. Therefore,the explosion protection performance of construction is being more and more concerned[1].The large finite element analysis software ABAQUS is being used to deal with numerical simulation of cross steel frame node, to analyses the response of the steel frame node and to discusses different steel material parameters on the influence of the nodes dynamic response under the effect of Explosive and Impact Load in this paper. According to conclusions, increase strength and modulus of elasticity of steel can reduce the damage of Explosive and Impact Load to construction. Meanwhile taking advantage of the function of transferring information between explicit processor and standard processor in ABAQUS, this paper analyses the effect of Explosive and Impact Load on steel frame node under low cyclic loading and concludes that it is harmful to the structural performance that the effect of Explosive and Impact Load can lower the ductility of the structure. According to the conclusion from the research on steel frame nodes characteristics under the effect of Explosive and Impact Load, this paper present that negative influence of Explosive and Impact Load should be taken fully into account, beneficial materials to explosion protection performance should be choosen and the corresponding measures to improve the ductility of structure should be taken to reduce structures degree of damage under Explosive and Impact Load in future structural design. All the research have a certain significance to the future structural design of explosion protection.