| 马宁,武文华,申国哲,胡平.高强度钢板热成形数值模拟-静力显式[J].计算力学学报,2011,28(3):371~376 |
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| 高强度钢板热成形数值模拟-静力显式 |
| Study of hot forming for high strength steel: numerical simulation-static explicit algorithm |
| 投稿时间：2010-02-05 修订日期：2010-07-05 |
| DOI：10.7511/jslx201103012 |
| 中文关键词: 静力显式算法 热、力、相变耦合 率形式KMAS 数值模拟 |
| 英文关键词:static explicit algorithm thermal-mechanical-transformation coupled rate-dependent KMAS numerical simulation |
| 基金项目:国家高技术研究发展计划(863计划)(2009AA04Z101);国家自然科学基金重点(10932003);国家重大基础研究发展计划(973计划)(2010CB832700)联合资助项目;中央高校基本科研业务类专项资金(DUT10LK28)资助项目. |
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| 中文摘要: |
| 在已建立的高强度钢热成形热、力、相变耦合本构方程的基础上,基于虚功率方程及持续平衡方程建立了热成形静力显式多场耦合有限元列式。将热成形过程中的相变潜热引入温度场,并进行了有限元分析;在自主开发的商业化金属成形CAE软件KMAS (King-Mesh Analysis System)基础上,开发了考虑多场耦合的非线性、大变形热成形静力显式数值模拟模块;随后对汽车门内加强梁进行了数值模拟,并与实验进行对比,结果证明了提出的本构模型及开发的多场耦合、非线性、大变形热成形数值模拟模块的正确性和有效性。 |
| 英文摘要: |
| Based on the developed multi-field coupled, rate-dependent constitutive equation of hot forming and the finite strain virtual power equation and continuous equilibrium equation based on Updated Lagrange method, the large-deformation,multi-field coupled, static explicit finite element equations of hot forming are established. The phase transformation latent heat is introduced into the analysis of temperature field during the hot forming process. Based on the independently developed commercial CAE software for sheet metal forming, named KMAS (King-Mesh Analysis System), the numerical simulation module of hot forming is developed, which considers multi-field coupled, nonlinear and large deformation analysis. Then the hot stamping process of a reinforced beam inside the automobile door is simulated by the KMAS software, and compared with its hot forming experiments. The experimental results indicate the validity and efficiency of the present constitutive model and numerical simulation software KMAS introducing the hot forming. |
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