博士生董渊哲出国参加国际会议回国汇报通知

汇报题目：参加2017 2nd International conference on Design, mechanical and Material Engineering(D2ME 2017) 参会报告

汇报时间：2017年9月27日(星期三) 20:00

汇报地点：兴庆校区模具所222会议室

汇报人：董渊哲

会议名称：The 2017 2nd International conference on Design, mechanical and Material Engineering(D2ME 2017)

会议时间：13 – 17 September, 2017

会议地点： Swinburne University of Technology, Melbourne, Australia

会议简介： D2ME 2017 is co-organized by Swinburne University of Technology and Hong Kong Society of Mechanical Engineers, supported by Southwest Jiaotong University. The conference will be held at Swinburne University of Technology, Melbourne, Australia, from September 13-17, 2017

The conference is an international forum for the presentation of technological advances and research results in the fields of Design, Mechanical and Material Engineering. The conference will bring together leading researchers, engineers and scientists in the domain of interest from around the world. We warmly welcome prospected authors submit your new research papers to D2ME 2017, and share the valuable experiences with the scientist and scholars around the world.

会议交流工作

Oral presentation: Investigation on the High-speed Precision Shearing of 5140 Steel Bars Pre-grooved by Laser

报告人：董渊哲

参加论文信息

Title:Investigation on the High-speed Precision Shearing of 5140 Steel Bars Pre-grooved by Laser

Author:Yuanzhe Dong, Wei Zhong, Yujian Ren, Shengdun Zhao and Lijun Zhang

Abstract:

A new blanking method is proposed to improve the quality of metal bars, by introducing the laser pre-grooving and high-speed precision shearing technology. The working principle is introduced, and the calculation method of the laser groove depth is given. By means of finite element method, the elastic-plastic deforming, damage initiation and crack propagation behaviour of a 5140 steel bar under high-speed shearing are obtained; furthermore, the corresponded shear force-displacement property is analysed in detail. After that, high speed shearing experiments are done of laser grooved 5140 steel bars. The results show that the 5140 steel bar undergoes rapid elastic and little plastic deformation before crack. Micro cracks initially appears in the lateral area with the damage value of 0.53; then main vertical cracks form and extend along the shearing direction; the fracture section of the billet is flat and smooth, with a section inclination of 0.3°and a weight tolerance of 0.35%.

欢迎感兴趣的同学前来交流！