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
Hits:
Indexed by:会议论文
Date of Publication:2005-01-01
Included Journals:CPCI-S
Page Number:1338-1342
Key Words:friction stir welding; finite element method; residual stress; material flow; equivalent plastic strain
Abstract:This paper presents a 3D numerical model based on arbitrary Lagrangian-Eulerian(ALE) and adaptive remeshing techniques to study the mechanism of friction stir welding. Results indicate that the material flow on the advancing side and the flow on the retreating side are different. The material on the retreating side never rotates around the pin. But the material on the advancing font side of the weld forms the fluidized bed around the pin and then sloughs off in the wake. The material in front of the pin moves upwards, then is forced to rotate around the pin. Behind the pin, the material moves downwards. It is the true reason to make the FSW process continue successfully. It seems that there exists a swirl of material flow on the advancing side. The residual stress distribution is a double-feature curve. It is also shown that there exists a good correlation between the equivalent plastic strain distribution and the distribution of the microstructure zones in the weld.
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.
