报告题目：Multiscale modeling and simulation of additive manufacturing based on fused deposition technique
报告人：李义宝 教授
主持人：王剑
报告时间：2023年7月17日（星期一）上午10:00-11:00
报告地址：藕舫楼802
报告摘要：
The issue of multiscale modeling has received considerable critical attention for additive manufacturing with fused deposition technique, which involves complex physicochemical phase transitions and thermodynamic behaviors. Lack of multiscale theoretical model poses significant challenges for prediction in AM processes driven by the rapidly evolving temperature field, including the nonuniformity of tracks, spheroidization effect of materials and intertrack voids. Few studies have systematically investigated the mapping relationship between physical environment and virtual environment. Inspired by the experimental results, we will develop a multi--scale system to describe the FD process in AM, which is coupled the conductive heat transfer model and the dendritic solidification model. The simulation requires a computational framework with high performance because of the cumulative effect of heat transfer between different layers. The proposed system is capable of simulating the material state with proper parameter at macro- and micro-scale and directly used to capture multiple physical phenomena. We further carry out several numerical experiments and comparative experiments to verify the robustness and applicability of the proposed model.
报告人简介：
李义宝，西安交通大学教授，博导，入选国家青年人才计划，2018年3月至2020年6月担任西安交通大学数学与统计学院应用数学系主任，2019年7月至今担任数学与统计学院党委副书记。主要从事多物理场的耦合机制、3D打印的图形处理和拓扑优化等研究工作。自2010年，在JCP，CMAME等期刊发表论文95篇，获国家授权发明专利5项。
数学与统计学院
2023年7月14日
