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| 汽车用先进高强钢本构模型与韧性断裂模型研究进展 |
| Research Progress on Constitutive Model and Ductile Fracture Model of Advanced High Strength Steel for Automotive Applications |
| Received:July 08, 2023 |
| DOI：10.3969/j.issn.1674-6457.2024.01.009 |
| 中文关键词: 轻量化 先进高强钢 冲压成形 本构模型 韧性断裂模型 |
| 英文关键词: lightweight advanced high strength steel stamping forming constitutive model ductile fracture model |
| 基金项目:天津市科技计划(18JCTPJC64500) |
| Author Name | Affiliation | | CHAO Chengxin | College of Mechanical Engineering, Tianjin University of Technology and Education, Tianjin 300222, China | | YU Qiang | College of Mechanical Engineering, Tianjin University of Technology and Education, Tianjin 300222, China
State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China | | LI Qiu | College of Mechanical Engineering, Tianjin University of Technology and Education, Tianjin 300222, China |
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| 中文摘要: |
| 轻量化是当前汽车行业全产业链共同面对的课题，提高先进高强钢使用比例是实现汽车轻量化的有效手段。对先进高强钢本构模型与韧性断裂模型的充分研究有助于提高先进高强钢开裂分析和预测的准确性，从而推动先进高强钢工程的应用进程。目前，在先进高强钢的研究过程中，学者们通常通过多种应变强化模型的线性组合，或结合微观结构与宏观力学行为进行多尺度分析来建立本构模型;通过多种应力状态下的准静态拉伸实验以及使用仿真与实验混合的方法来标定韧性断裂模型的参数。以第三代先进高强钢中的淬火配分(QP)钢为重点讨论对象，介绍了制备工艺与材料特性及其相关研究进展，并介绍了QP钢本构模型的研究现状、新近发展的非耦合韧性断裂模型以及考虑了应力三轴度和罗德角参数影响的韧性断裂模型在先进高强钢上的应用现状，最后指出了先进高强钢本构模型和韧性断裂模型未来的研究方向。 |
| 英文摘要: |
| Lightweight is a common topic in the whole industry chain of automobile industry. Increasing the proportion of high strength steel and reducing the amount of steel are effective means to achieve lightweight of automobiles. Sufficient research on the constitutive model and the ductile fracture model of advanced high strength steel can help improve the accuracy of crack analysis and prediction of advanced high strength steel, thereby promoting the engineering application process of advanced high strength steel. In the prevent research of advanced high strength steel, scholars usually use a linear combination of multiple strain strengthening models to construct constitutive models, or conduct multi-scale analysis combining microstructure and macroscopic mechanical behavior to establish constitutive models. The work aims to calibrate the parameters of ductile fracture models through quasi-static tensile experiments under various stress states, using a mixture of simulation and experimental methods. With quenching partitioning steel (QP) steel in the third generation of advanced high-strength steel as the main object, the preparation process, material properties, and related research progress were introduced. And the research status of constitutive models for QP steel was introduced. The newly developed non-coupled ductile fracture model was also introduced, along with the application status of the ductile fracture model considering the influence of stress triaxiality and Lode angle parameters on advanced high strength steel. Finally, the future development directions of constitutive models and ductile fracture models were pointed out. |
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