Shear Model Substructure Test Interface Simulation Research

This paper proposed multiple substructural interface simulation methods, which based on shear framework model. By applying the OpenSEES finite element software to get the error of numerical simulation, it is shown that conventional solutions include two methods, one ignores the overturning moment and another considers the overturning moment, have relatively large error in not only the macro-displacement and hysteresis loop but also the internal force on the condition of shear structure. The paper proposed three methods taking the overturning moment of the interface into account, which are promoted significantly compared with the conventional solution. The method in consideration of all factors on the interface, the method one based on inflection point and the method two based on inflection point own roughly equal errors. The method two based on inflection point use prediction of interface axial deformation strategy, could effectively avoid the difficulty of loading existing in the process of moment simulation of the method in consideration of all factors on the interface. It also prevents the difficulty of testing resulting from the axial deformation in the method one based on inflection point. So the method two based on inflection point can effectively realize the simulation of the structural interface.