Dynamic Elastic-Plastic Analysis for the One Dimensional Ground Model by FEM and CIP Method
42015-03-31 , 法政大学大学院デザイン工学研究科
When analyzing the wave propagation problem in the infinite or semi-infinite elastic solids, the numerical device which can transmit the outgoing waves should be attached to the boundary of the finite analytical region. Generally the discrete models are installed at the boundary. But, in this research, we propose a new method which combines the CIP method to the finite element method. Its validity is presented by analyzing one dimensional rod model subjected the impulse load in also analyzed. The boundary of FEM domain has to transmit various waves in order to analyze an infinite wave field. To realize this function, the CIP grid is overlapped to the FEM mesh efficiently around the boundary.