| 本文已被：浏览 214次 下载 178次 |
码上扫一扫！ |
|
|
| 焊接凝固裂纹三维数值模拟与预测系统的前处理设计 |
|
董志波1, 占小红2, 魏艳红1,2, 卢亚峰3, 郭萍3, 杨永福3
|
|
1.哈尔滨工业大学现代焊接生产技术国家重点实验室, 哈尔滨 150001;2.南京航空航天大学材料科学与工程系, 南京 210016;3.西北有色金属研究院钛合金研究所, 西安 710016
|
|
| 摘要: |
| 设计了三维焊接凝固裂纹的数值模拟与预测软件系统,使普通的焊接技术人员可以简便地实现焊接凝固裂纹的数值模拟与预测.系统由三部分组成:前处理,后处理和凝固裂纹预测部分.其中系统的前处理可以帮助用户选择接头类型,对接头进行网格剖分,输入材料性能参数、焊接工艺条件以及力学边界条件等,并自动以MSC.Marc命令流的形式存储成MSC.Marc的过程文件.依据生成的过程文件,自行连接MSC.Marc有限元软件,对焊接凝固裂纹的温度场和应力、应变场进行数值模拟计算,并存储模拟结果,为后处理做准备. |
| 关键词: 凝固裂纹 前处理 模拟与预测系统 |
| DOI： |
| 分类号: |
| 基金项目:中国博士后科学基金资助项目(20080430129);国家科技支撑计划基金资助项目(2007BAE07B07) |
|
| Pre-processing software for three-dimensional simulation and prediction of weld solidification cracks |
|
DONG Zhibo1, ZHAN Xiaohong2, WEI Yanhong1,2, LU Yafeng3, GUO Ping3, YANG Yongfu3
|
|
1.State Key Laboratory of Advanced Welding Technology Production, Harbin Institute of Technology, Harbin 150001, China;2.Department of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;3.Titanium Alloy Institute, Northwest Institute For Non-ferrous Metal Research, Xi'an 710016, China
|
| Abstract: |
| A software consisted of pre-processing, post-processing and solidification cracks predicting subsystems is developed, which can simulate and predict the weld solidification cracks with three dimensional FEM.The pre-processing helps users to choose the workpiece, to input the thermal-mechanical properties of materials and welding parameters, to set boundary conditions, and to automatically generate command streams of MSC.Marc to create process files for final FEM calculation.Furthermore, system can transfer the process files to software package of MSC.Marc to complete the calculation of thermal, strain and stress distributions in background.Therefore, the simulated results are prepared for the post-processing. |
| Key words: solidification cracking pre-processing simulation and prediction |
