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福建省滨海土木工程数字仿真重点实验室

学术讲座

报告题目：Advanced Multifunctional Materials and Structures - Analysing Extreme Deformation and Dynamic Behaviour using Meshless and Multiscale Methods

报告人：澳大利亚皇家墨尔本理工大学 Rajarshi Das 教授

时间：2023年12月4日，上午10:00

地点：曾呈奎楼 208

报告摘要：

The seminar will present overview of advanced multifunctional materials and structures computational mechanics research at the Centre for Multifunctional and Composite Materials of RMIT University, Australia. Our research covers both fundamental and applied aspects of material behaviour and failure processes. This presentation will encompass computational modelling of material deformation, damage and fracture using multi-scale techniques in conjunction with mesh-less methods, novel composite materials development and damage tolerance structural optimisation.

Multi-scale modelling of damage and fracture progression linking nano to macro scales and associated development of coupled computational modelling tools will be highlighted. The strengths of mesh-less methods will be illustrated with reference to both low to high-speed impact induced fractures and small to large scale problems. These include several dynamic fracture and fragmentation processes, such as hypervelocity impact fracture, nano-scale machining, large scale geo-mechanical failures (magma intrusion, caving, slope stability, etc).

One of our core areas to be presented is novel impact and blast resistant, light weight composite material developments for aerospace components subjected to high-speed loading and extreme deformations, as occurs in the cases of debris impact on spacecrafts, bird strike on aircraft engines, blast induced failures, etc. Lastly novel shape and topology optimisation methodologies for damage tolerance optimisation, i.e. maximising the residual strength and fatigue life, of aero-structures will be highlighted. Case studies from projects with Royal Australian Air Force and Defence Science and Technology Organisation will be presented to demonstrate the practical implementation and utilities of the developed design and analysis methodologies.

报告人简介：Raj Das为澳大利亚皇家墨尔本理工大学教授，现任该校“劳伦斯·瓦克特爵士研究中心”先进材料与结构模拟研究所所长，主要从事工程材料和结构的设计、分析和优化等方面的研究工作，专注于计算力学、结构优化、复合材料结构、失效分析和损伤容限设计，在国际期刊和会议上发表论文250多篇。Raj教授目前担任“国际断裂大会”澳大利亚执行委员会主任，同时担任澳大利亚工程师协会“应用力学全国委员会”主席，还曾担任过多个知名国际会议，如ICM-13、ACAM-8、ACCM-3、ICCM-6的主席或共同主席。