Zhang Zhao
Professor Supervisor of Doctorate Candidates Supervisor of Master's Candidates
Main positions:Professor in Process Mechanics
Gender:Male
Alma Mater:Dalian University of Technology
Degree:Doctoral Degree
School/Department:Department of Engineering Mechanics, Dalian University of Technology
Discipline:mechanics of manufacturing process. Engineering Mechanics. Computational Mechanics
Business Address:Room 619,Integrated Laboratory building (1#)
Contact Information:+86-411-84708432 zhangz@dlut.edu.cn
E-Mail:zhangz@dlut.edu.cn
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Indexed by:期刊论文
Date of Publication:2011-09-20
Journal:机械工程学报
Included Journals:EI、PKU、ISTIC、CSCD、Scopus
Volume:47
Issue:18
Page Number:23-27
ISSN No.:0577-6686
Key Words:搅拌摩擦焊接;热力耦合模型;功率
Abstract:采用完全热力耦合模型以及修正的库仑模型,分别模拟AA2024-T3铝合金中厚板和薄板的搅拌摩擦焊接过程,通过对比发现搅拌摩擦焊接中材料流动速度的最大值发生在上表面搅拌针前方靠近后退侧,焊接构件上表面材料流动速度明显高于下表面,这说明搅拌头轴肩的旋转对材料流动具有明显影响.相同的焊接参数下,焊接中厚板需要更高的外输入功率以完成搅拌摩擦焊接过程,摩擦能耗在搅拌摩擦焊接中占据主要成分,是温度场形成的主要热源.在焊接薄板时,摩擦能耗占据更高的比例,说明此时的热转换率更高.塑性变形和温度是决定焊接微观结构的主要指标,中厚板搅拌摩擦焊接产生的改善晶粒大小的效果和有效利用外输入能量方面较薄板稍差.因此,无论从能量利用的角度还是对微观结构的推断均发现薄板的搅拌摩擦焊接过程具有更高的效率.
Zhang Zhao, Ph.D., Professor in Process Mechanics.
Editorial member in Coatings (IF:2.881) from 2020 to 2022.
Editorial member in Crystals (IF:2.589) from 2020 to 2022.
Younth editorial member in Journal of Central South University(IF:1.716) from 2020 to 2022.
Professor Zhang has published more than 60 SCI publications with over 1100 citations. He served as reviewers for more than 30 international journals. His main pulications can be found:
https://orcid.org/0000-0001-7181-8617
https://publons.com/researcher/1987190/zhao-zhang/
The scientific research focuses on experimental and numerical works on friction stir welding/processing/additive manufacturing, numerical modelling and simulation of additive manufacuring, topological design of phononic crystals, locomotive and high speed train design.
