板材成形模拟中模具曲面的描述和光顺

Description and Smoothing of Die Surfaces in Plate Deforming Simulation

为解决在有限元中曲线、曲面的描述和光顺问题,提出一种适合有限元模拟的模具曲面修正方法.采用基于点的曲面表达方式描述模具曲面,利用原始型值点与修正后的型值点之间的误差描述光顺,并利用ABAQUS软件建立了相应的计算机模拟系统.模拟结果表明,该系统适用于采用有限元模拟模具曲面修正.

To describe and smooth curves and curved surfaces in finite element simulation, a method for modifying die surfaces in plate deforming simulation is proposed. The description of the surfaces is based on point representation, and the fairness of a surface is represented with the difference between the original points and those after modification. A simulation system is implemented by use of finite element software ABAQUS. An example of simulation is presented, showing that the proposed method and the simulation system is applicable in die surface modification assisted with finite element method.