报告一
报告人
Prof. Itai Einav(the University of Sydney)
报告题目
Hydrodynamics of hysteretic water retention and effective stress of soils
报告时间
2024年6月16日(星期一)14:00-14:45
报告地点
浙江大学紫金港校区·安中大楼A322
报告摘要
Water retention in soil exhibits diverse phenomena with density-dependent hysteretic suction-saturation response. This seminar will explain these phenomena using Landau’s non-equilibrium hydrodynamic framework of continuum mechanics, enriched by Onsager's reciprocity principles and Mario Liu’s two-stage irreversible principle for heterogeneous media. The theory distinguishes true equilibrium from meta-stable states, and clarifies the dependence of the so-called effective stress of soils on both its water retention properties, and its compressibility.
报告人简介
Itai Einav is Professor of Geomechanics at the University of Sydney and Director of SciGEM. His research focuses on the physics of porous and granular materials—sand, clay, rock, and snow—with applications to mineral processing, brittle collapse, and natural hazards such as earthquakes, landslides, and avalanches. He chairs TC105 (Geo-Mechanics) of the ISSMGE and is an editor of Granular Matter.
报告二
报告人
Prof. Luming Shen(the University of Sydney)
报告题目
Recent advances in experimental characterisation and numerical modelling of dynamic failure of brittle materials
报告时间
2024年6月16日(星期一)14:45-15:30
报告地点
浙江大学紫金港校区·安中大楼A322
报告摘要
In this talk, recent advances in the numerical modelling and experimental characterisation of the dynamic behaviours of various brittle materials under high strain rate loading conditions will be presented. In particular, split Hopkinson pressure bar, micro-CT and acoustic emission technique were used to characterise energy dissipation mechanisms in dynamic failure of brittle materials.A damage-plasticity constitutive model which takes account of the effect of confining pressure and high strain rate on the strength and post-peak behaviour of rock subjected to dynamic loading and high confinement pressure will also be reported in the presentation.These experimental and numerical results will be useful for safeguarding critical infrastructure against natural disasters and accidental events as well as facilitating effective and environmentally sustainable resource recovery processes.
报告人简介
Luming Shen is a Professor and Associate Head for Research in the School of Civil Engineering at The University of Sydney, Australia. He received his bachelor’s degree in building engineering and master's degree in structural engineering from Tongji University, and his PhD in civil engineering from the University of Missouri at Columbia, Missouri in the USA. He was a Lecturer in the Department of Civil Engineering at Monash University between 2006 and 2008. He joined the School of Civil Engineering at the University of Sydney as Senior Lecturer in 2008 and was promoted to full professor in 2020. His research is mainly focused on mechanics of materials with special interests in multiscale multiphysics modelling and characterisation, solid–fluid interactions, impact engineering, and advanced structural materials. He has published over 180 peer-reviewed articles in leading international journals.
报告三
报告人
张春顺 教授(武汉大学土木建筑工程学院)
报告题目
屈服函数的简易构建方法:从弹性势能等势面出发
报告时间
2024年6月16日(星期一)15:35-16:10
报告地点
浙江大学紫金港校区·安中大楼A322
报告摘要
从摩尔库伦到剑桥模型,从简单弹塑性框架到考虑颗粒破碎能量损耗的功能守恒框架,屈服函数的构建始终处于关键地位,它是区分不同本构模型的核心要素。为了实现各类屈服函数的高效构建,推动本构模型学习和研究的深入开展,本次汇报介绍了一种创新、直观且易于操作的数学方法。通过该方法,成功构建了屈服函数与弹性势能之间的映射关系,并以考虑颗粒破碎的简单本构推导为例,彰显了本方法在本构关系构建中的显著成效及广泛普适性。
报告人简介
张春顺,武汉大学土木建筑工程学院教授、博士生导师。博士毕业于澳大利亚悉尼大学,曾任职于澳大利亚蒙纳士大学,历经博士后、讲师、高级讲师。主要从事岩土材料本构、岩体力学与工程研究工作。主持国家自然科学基金优秀青年科学基金项目(海外)、国家自然科学基金面上项目(52278367)、国家重点实验室开放基金2项、中央高校学科交叉团队建设和培育专项基金及澳大利亚多项基金。近年来以一作和通讯身份发表高水平SCI论文30余篇,获岩土顶刊《Géotechnique》、《Computers and Geotechnics》最佳论文奖、英国土木工程师协会(ICE)乔治史蒂芬森奖等。担任武汉岩土工程学会第六届理事会常务理事、中国岩石力学与工程学会地下工程分会理事、中国公路建设行业协会青年专家工作委员会专家、中国公路学报青年编委、中科院一区期刊《Journal of Rock Mechanics and Geotechnical Engineering》编辑。
报告四
报告人
蒋晟 教授(河海大学水利水电学院)
报告题目
冲击载荷下颗粒材料破碎与能量耗散机制研究:颗粒形状与含水率的协同作用
报告时间
2024年6月16日(星期一)16:10-16:45
报告地点
浙江大学紫金港校区·安中大楼A322
报告摘要
本次讲座将聚焦冲击载荷下颗粒材料破碎行为与能量耗散机制的最新研究进展。讲座系统介绍颗粒形状与含水率对破碎模式、力学响应及热能耗散行为的协同影响。重点展示主讲人团队近年来基于分离霍普金森压杆(SHPB)、高分辨率微型CT与扫描电镜(SEM)等多尺度实验手段取得的关键成果,特别是颗粒熔化现象的首次定量识别及其在能量耗散中的主导作用。该研究为理解颗粒材料在极端加载下的细观行为提供新视角。讲座内容前沿,适合从事颗粒力学、岩土动态响应、材料破碎与高应变率实验研究的研究生与科研人员参与。
报告人简介
蒋晟教授现任河海大学水利水电学院教授、博士生导师,智慧水利与安全研究所所长,国家级青年人才计划入选者,江苏特聘教授,并担任中国水力发电工程学会海外分会理事。2019年获澳大利亚悉尼大学岩土工程博士学位,博士后阶段曾在悉尼大学岩土与结构研究组从事冲击动力学与颗粒破碎机制研究工作。近年来,蒋教授围绕高应变率下颗粒材料的破碎与能量耗散、离散介质失稳致灾机理以及人工智能辅助的灾害风险识别方法开展了系统研究。现主持包括国家自然科学基金优秀青年科学基金项目(海外)、国家自然科学基金面上项目等多项科研课题。
承办单位
浙江省力学学会岩土力学与工程专业委员会、浙江省岩土力学与工程学会本构理论与数值分析专业委员会、浙江大学岩土工程计算中心