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基于Dynaform的Strenx960高强钢折弯工艺影响因素分析
英文标题:Analysis on influencing factors of bending process for Strenx960 high-strength steel based on Dynaform
作者:魏子豪 朱春东 郑淇文 石磊 
单位:湖北省专用汽车质量检测中心 武汉理工大学 随州武汉理工大学工业研究院 
关键词:Strenx960高强钢 折弯 开裂 回弹 Dynaform 
分类号:TG386.1
出版年,卷(期):页码:2020,45(12):78-84
摘要:

使用瑞典先进高强钢Strenx960作为伸缩臂制造材料,为了更好地研究多种工艺参数对Strenx960高强钢折弯工艺的影响规律,以Strenx960高强钢为研究对象,采用有限元分析和实际试验相结合的方法进行研究。根据Strenx960高强钢的材料参数,建立了自由折弯有限元模型,研究了凸模圆角半径、板料厚度、摩擦系数对折弯开裂及回弹的影响规律。结果表明:回弹角大小与凸模圆角半径成正比、与板料厚度和摩擦系数成反比;板料开裂主要与凸模圆角半径和板料厚度有关,凸模圆角半径越小,板料越易开裂,板料越厚,开裂的风险越大;摩擦系数对板料开裂的影响较小。通过实际试验验证,Strenx960高强钢折弯试验结果与有限元模拟结论基本一致。

The Swedish advanced Strenx960 high-strength steel is used as the manufacturing material of telescopic boom. For Strenx960 high-strength steel, the influence laws of various process parameters on the bending process for Strenx960 high-strength steel were studied by combining finite element analysis with actual test. According to material parameters of Strenx960 high-strength steel, the finite element model of free bending was established, and the influence laws of fillet radius of punch, plate thickness and friction coefficient on bending cracking and springback were studied. The results show that the springback angle is proportional to the fillet radius of punch and inversely proportional to the plate thickness and the friction coefficient. Furthermore, the sheet metal cracking is mainly related to the fillet radius of punch and the plate thickness. The smaller the fillet radius of punch is, the easier the sheet metal cracking is. The thicker the sheet metal is, the greater the risk of cracking is. In addition, the friction coefficient has little influence on the sheet metal cracking. Thus, through the actual test verification, the bending test results of Strenx960 high-strength steel are basically in agreement with the FEM simulation conclusions.

基金项目:
随州市新能源、轻量化、智能化关键核心技术研发项目(随科发[2019]9号)
作者简介:
魏子豪(1996-),男,硕士研究生 E-mail:weizihao1120@163com 通讯作者:朱春东(1963-),男,硕士,教授 E-mail:zcdzcd6252@sinacom
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