Nonlinear finite element analysis of top-and seat-angle with double web-angle connections

摘要

Four finite element(FE)models are examined to find the one that best estimates moment- rotation characteristics of top-and seat-angle with double web-angle connections. To efficiently simulate the real behavior of connections, finite element analyses are performed with following considerations: 1)all components of connection(beam, column, angles and bolts)are discretized by eight-node solid elements; 2)shapes of bolt shank, head, and nut are precisely taken into account in modeling; 3)contact surface algorithm is applied as boundary condition.