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【PBC+应力应变曲线】为施加PBC的RVE绘制应力应变曲线

Name: 【PBC+应力应变曲线】为施加PBC的RVE绘制应力应变曲线
Uploaded: 2022-01-28T02:48:41.000Z
Duration: 15 min 53 s
Channel: 果汁在路上

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2022-01-28 10:48:41

https://youtu.be/qHt-Mn3nuiQ 《How to PLOT Stress Strain curve in #ABAQUS for a PBC-enabled RVE》-Dr. Michael Okereke 1.简介：该视频展示了如何绘制已施加周期性边界条件的代表性体积元素 (RVE) 的应力-应变曲线，本文将其描述为施加PBC的RVE。当对RVE施加 PBC 时，在体积平均过程中，在四个保留节点处仅保留四个反作用力。因此，要导出应力应变图，必须使用虚拟功的方法。该视频首先展示了如何通过均质应力的数学推导来完成此操作，然后使用带有孔隙的UD复合材料说明该原理。 2.关键词：周期性边界条件 (PBC) ，代表性体积元素 (RVE) ，应力应变曲线（stress-strain curve），虚拟功（virtual work），均质应力的数学推导（ the mathematics of homogenized stress derivation），带有孔隙的UD复合材料（ a voided UD composite material） 3.时间节点： 00:00 介绍 01:00 视频大纲 01:38 均质应力的数学运算 06:40 示例：带有孔洞的UD复合材料 07:16 ABAQUS 分步操作 09:05 施加 PBC 的 RVE 12:18 确定应力-应变数据 13:54 绘制应力-应变曲线 15:24 结尾 4.视频参考的文献：Okereke, M.I. and Akpoyomare, A.I., 2013. A virtual framework for prediction of full-field elastic response of unidirectional composites. Computational materials science, 70, pp.82-99. (https://tinyurl.com/4bjz6tyj) 5.本视频中参考的文献、使用的ABAQUS模型（cae模型）、Inp文件以及Excel电子表格可到此链接下载：https://www.aliyundrive.com/s/DBAdkjYwu8s 英文大纲： 1.Introduction:This video shows how to plot stress-strain curve for an representative volume element (RVE) that has been imposed/enabled with periodic boundary conditions (PBC) which is herein described as PBC-enabled RVE. This is important as when RVEs have PBCs imposed on them, during the volume averaging process, only four reactions forces, at the four retained nodes remain. So, to determine stress strain plot, a method involving virtual work has to be utilised. 2.Keywords: Periodic boundary conditions，RVE，stress-strain curve，virtual work，he mathematics of homogenized stress derivation，a voided UD composite material 3.Time: 00:00 Intro 01:00 Video outline 01:38 Mathematics of homogenised stress 06:40 Illustration: Voided UD Composite 07:16 ABAQUS step-by-step guide 09:05 Working with PBC-enabled RVE 12:18 Determining stress-strain data 13:54 Plotting stress-strain curve 15:24 Outro

周期性边界条件