摘要
本文将局部透射边界和集中质量有限元技术结合起来形成一个模拟稳态近场波动的力学模型。这一模型中任一节点的运动仅与其邻近的节点耦联。这一特点导致稳态波动有限元模拟的一种十分简便和有效的算法。本文将以基底固定的弹性层内的出平面波动为例阐明这一算法,并用一种新的局部透射边界模拟行进波动。
A local transmitting boundary is combined with a lumped-mass finite element technique to form a mechanical model simulating the near field steady wave motion . The motion of any node in the model only couples with those in its neighborhood. This characteristic results in a simple and effective algorithm for the finite element simulation. In this paper, the method is illustrated by an example of the anti-plane wave motion in an elastic layer fixed at its base and accuracies of a new local transmitting boundary for simulating travel waves is especially shown.
出处
《地震工程与工程振动》
CSCD
北大核心
1993年第4期1-7,共7页
Earthquake Engineering and Engineering Dynamics
