| 引用本文: | 吕宝佳,康进武,黄天佑.基于cv-FDM法的铸件凝固过程热应力数值模拟[J].材料科学与工艺,2010,18(6):862-867.DOI:10.11951/j.issn.1005-0299.20100626. |
| LU Bao-jia,KANG Jin-wu,HUANG Tian-you.Numerical simulation of thermal stresses of castings during solidification process by cv-FDM[J].Materials Science and Technology,2010,18(6):862-867.DOI:10.11951/j.issn.1005-0299.20100626. |
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| 摘要: |
| 为了实现铸件凝固过程多物理场的无缝耦合数值模拟,开展基于有限差分法的铸件凝固过程热应力分析.建立了热弹塑性的三维控制体积有限差分(cv-FDM)算法,开发了相应的铸件凝固过程热应力分析三维仿真软件.将该软件应用于典型的应力框试件和轧钢机机架铸件,计算得到了铸件凝固过程产生的应力和位移,并将结果与采用有限元分析软件ANSYS的计算结果进行了对比验证,吻合较好,表明模拟结果基于cv-FDM的铸件热应力分析达到了有限元法的精度水平. |
| 关键词: 控制体积-有限差分法(cv-FDM) 数值模拟 热应力 铸件 |
| DOI：10.11951/j.issn.1005-0299.20100626 |
| 分类号:TG244.3 |
| 基金项目:“高档数控机床与基础制造装备”科技重大专项资助项目(2009ZX04014-082) |
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| Numerical simulation of thermal stresses of castings during solidification process by cv-FDM |
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LU Bao-jia1,2, KANG Jin-wu2, HUANG Tian-you2
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1.Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China;2.Key Laboratory for Advanced Materials Processing Technology Ministry of Education, Tsinghua University,Beijing 100084,China
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| Abstract: |
| For the seamless multi-field coupled numerical simulation of castings during solidification process,the thermal stress analysis of castings based on finite difference method was carried out.A three dimensional control volume based finite difference method(cv-FDM) for thermal elastic model,and an analysis system for castings are established.The system is applied into the thermal stress analysis of a stress frame specimen and a mill housing casting.The displacement and stress results are obtained and compared with those acquired by software ANSYS,and they are in good agreement.This shows that the cv-FDM based thermal stress analysis reaches the same accuracy as ANSYS does. |
| Key words: control volume based finite difference method(cv-FDM) numerical simulation thermal stress casting |
