机织复合材料渐进损伤的可视化方法

The Visualization Method of Progressive Damage of Woven Composites

本工作建立了机织复合材料渐进损伤可视化模型。该模型通过建立一种多积分点单元,将一定数量的积分点均匀地分布在机织复合材料单胞单元上,并通过区域划分子程序模块对这些积分点的属性进行划分,其中的任意一个积分点都能表征其对应位置厚度方向上的所有几何及材料特征,并利用这些积分点计算、记录、显示机织复合材料不同区域的应力状态、应变状态以及材料的失效状态,获得机织复合材料中各组分的失效顺序及失效模式。同时,复合材料渐进损伤可视化模型建立了ASCII存取方法,利用这一存取方法可对单元上所有积分点的失效状态进行存取,极大降低了模型对计算机存储能力的要求,提高了计算效率。

This work elaborates an visible progressive damage model of the woven composites.This model creates a multi-integral-point unit element,on which the integral points are arranged evenly across the unit cell element.These integral points are divided by region division sub-model,and any of these points can represent the whole properties of the geometry and material across the thickness at the position it belongs.The visible progressive damage model can calculate,record and present the regional stress,strain and damage mode of the woven composites,and obtain the sequence and damage mode of the components.The article also creates an ASCII storage method to access the damage mode of these integral points in each step,which can reduce the requirement of the computing and storage ability of the computer.