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:2016-06-26
Journal:机械研究与应用
Volume:29
Issue:3
Page Number:136-139
ISSN No.:1007-4414
Key Words:激光增材制造;数值模拟;温度场;热应变;热应力
Abstract:激光增材制造工艺过程中热应力的大小及变化规律显著影响加工质量和工件的可靠性，为了明确激光增材制造过程中热应力的变化，采用生死单元技术对激光增材制造过程进行模拟，并采用双椭球热源模型模拟激光热源，从而计算激光增材制造过程中温度场分布、热应变及热应力变化过程。计算结果表明，激光增材制造过程中，增材厚度、增材层数等制造工艺对整体温度场影响较大，增材厚度越大，增材层数越少，激光增材制造峰值温度越低，材料温度变化幅度越小。在激光增材制造过程中，出现明显拉应力，有可能是导致激光增材制造过程中材料断裂的重要原因。激光增材制造过程中，变化的热应力具有峰值较高，变化速度较快，持续时间较长的特点。
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.
