报告题目(中文)：焊接和增材制造中残余应力的预测与控制
报告题目(英文)：Prediction and control of welding and additive manufacturing induced residual stress
报告内容简介：
Welding and additive manufacturing often produces residual stress in the material being fabricated, influencing its final quality and performance. Although many engineers and researchers have taken great efforts to try and control these phenomena, they still often remain unresolved. This work aims to buffer these efforts by providing both fundamental theoretical knowledge about residual stress as well as unique computational approaches for predicting and mitigating the effects of residual stress on materials. New techniques and applications, outlining advanced finite element methods are updated with cutting-edge knowledge such as implicit scheme, explicit scheme, and hybrid scheme, and coupling analysis among thermal-metallurgy-mechanics. Non-destructive measurement methods for residual stresses are introduced such as X-ray diffraction, indentation technique, Neutron diffraction method, and various synchrotron X-ray diffraction techniques. Destructive measurement techniques are covered as well, such as block cutting for releasing residual stress, blind hole drilling, deep hole drilling, slit cutting method, sectional contour method, and general inherent strain method. Various industrial applications of residual stress control with material behavior and computational approaches are featured throughout.
报告人姓名：Ninshu Ma (麻宁绪)
报告人简介(中文)：麻宁绪教授于1994年在大阪大学获得工学博士学位，随后在日本综合研究所担任专业顾问从事计算机辅助工程领域的研究工作21年，他目前是大阪大学接合科学研究所的教授。麻教授是世界范围内焊接工艺计算热力学、增材制造和结构部件安全评估的先驱之一。这些成就体现在数值可视化计算方法以及测量方法的基础研究，同时成功应用于工业化生产。麻教授建立了全球工业化合作研究中心，开展计算焊接科学研究，包括与中国、韩国、澳大利亚、瑞典、美国等许多国家的知名大学开展了合作研究，并促进了与工业界的联合研究项目。麻教授撰写并出版了 6 本学术著作，受邀在国际会议上进行了 20 次大会报告和主旨演讲。他在国际知名期刊上发表学术论文 200 余篇，申请专利 26 项，开发了 2 个领先的商业化模拟系统，包括用于金属成型的JSTAMP软件和用于焊接的JWELD软件，所研发的材料本构模型 MAT281-290 已被知名大型商业软件 LS-DYNA 采用。针对焊接和增材制造过程，所开发的计算方法可以大大提高数值模拟速度，在日本、中国、美国等国得到了广泛应用（引用次数>3,500 次，WoS的 h 指数为 31）。
报告人简介(英文)：Prof. Ninshu Ma received his doctoral degree in Engineering from Osaka University in 1994 and then worked for 21 years as a professional consultant in the field of computer-aided engineering at Japan Research Institute. He’s currently a professor at Joining and Welding Research Institute, Osaka University. Prof. Ma is one of the world-wide pioneered researchers on computational thermal mechanics for welding process, additive manufacturing and safety assessment of structural components. The achievements include not only basic research seeds in developing both the numerically computing methods and measuring methods, but also applications to industries. Prof. Ma established a global and industrial collaborative research center for computation welding science which enhanced the relationship with many foreign universities in China, Korea, Australia, Sweden, USA and promoted joint research projects with dindustries. Prof. Ma has written and published 6 books and given 20 plenary/keynote presentations at international conferences. He has published more than 200 papers in well-known journals and major international, applied for 26 patents, developed 2 leading commercial simulation systems JSTAMP for metal forming and JWELD for welding, material constitutive models MAT281-290 which have been adopted by well-known large commercial software LS-DYNA. The developed computing methods can greatly improve the numerical simulation speed for welding and additive manufacturing phenomena, which are widely used in Japan, China, the United States, etc. (＞3,500 citations, h-index 31 on WoS).
报告人单位(中文)：大阪大学
报告人单位(英文)：Osaka University
报告时间：2024-11-05 15:00
报告地点：宝山校区东区8号楼508
联系人：侯雨阳
