构造连续应力场的有限元差分法

Finite Element—Difference Method for Generating Continuous Stress Field

本文从构造连续应力场出发,通过建立节点位移与节点应变之间的差分格式,给出一种新的计算方法——有限元差分法。算例表明,该方法具有较高的计算精度,且程序设计规范,可以方便地用于各种工程结构。

In this paper, according to constructing a continuousstress field and building a difference operation for nodal strainsfrom nodal displacement field, a finite element-differencemethod is given. It is showen by the numerical test that thepresented method is more accurate than finite element's, hasstandard programming, and can be easily applied to variousengineering calculations.