一、周期性边界条件
关于周期性条件的加载, simwe论坛中有几篇较好的帖子,有兴趣的可以看看。
周期性边界条件(PBC)的施加总结 http://forum.simwe.com/forum.php?mod=viewthread&tid=1081613&highlight=%E5%91%A8%E6%9C%9F%E6%80%A7%E8%BE%B9%E7%95%8C%E6%9D%A1%E4%BB%B6
给一般网格施加周期性边界条件的python程序
http://forum.simwe.com/forum.php?mod=viewthread&tid=1081467&highlight=%E5%91%A8%E6%9C%9F%E6%80%A7%E8%BE%B9%E7%95%8C%E6%9D%A1%E4%BB%B6
周期性边界条件在ABAQUS中的实现的思路就是在相对两个面的对应节点之间建立约束关系(equation),从而使得两个面的变形保持一致,实现应力和变形一致。
二、EasyPBC,A Simple ABAQUS Plug-in with Periodic Boundary Conditions
EasyPBC is an open-source ABAQUS CAE interface plugin coded in python to estimate the effective elastic properties of a periodic representative volume element. The software allows the user to fully generate a part, mesh it, and use analysis data after calculating the homogenised properties all within ABAQUS CAE user interface without the need to use a third-party software. Additionally, EasyPBC is capable of capturing geometrical variations that commonly used theoretical methods are incapable of. The concept of the plugin is automatically applying periodical representative volume element homogenisation method and all related operations through two stages.
https://www.researchgate.net/project/ABAQUS-Plugin-Tool-for-Periodic-RVE-Homogenisation-EasyPBC
使用体验
安装插件EasyPBC V1.3。
建立一个简单复合材料单胞有限元模型,赋予材料属性,创建装配体,进行网格划分。
运行plug-ins菜单下的EasyPBC V1.3插件,输入当前工作model和part名称,选择要计算的材料宏观参数(对应周期边界条件加载),宏观参数求解与否可自主选择。
非常的方便。
四、插件下载
关注微信公众号:ABAQUS在线,后台回复“EasyPBC”,直接获取网盘下载地址。