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Title:Analysis on influencing factors of bending process for Strenx960 high-strength steel based on Dynaform
Authors: Wei Zihao  Zhu Chundong  Zheng Qiwen  Shi Lei 
Unit: Hubei Center for Quality Inspection of Special Purpose Vehicles Wuhan University of Technology Suizhou-WUT Industry Research Institute 
KeyWords: Strenx960 high-strength steel bending cracking springback Dynaform 
ClassificationCode:TG386.1
year,vol(issue):pagenumber:2020,45(12):78-84
Abstract:

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.

Funds:
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)
AuthorIntro:
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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