RECENT DEVELOPMENTS IN SNAPS3D – A FINITE ELEMENTANALYSIS PROGRAM FOR 3-DIMENSIONAL NONLINEAR TIMEHISTORYANALYSIS OF PRECAST CONCRETE STRUCTURES

摘要

This paper describes the enhancements made to the finite element analysis program (SNAPS3D)developed to carry out materially nonlinear static or dynamic analysis of three-dimensional precastconcrete building structures. The finite element library consists of three-dimensional solid elements, shellelements to model wall panels and horizontal diaphragms, frame elements to model beams and columns,and connection elements to model the interface between diaphragm and wall panels as well as theinterface between beams and columns. The material library consists of linear elastic, elastoplastic,uniaxial concrete, and shear-slip material models.