U.S.-Polish Collaborative Research: Localization and Fracture under Dynamic Loading Processes in Mesomechanics Problems

这是一个美国和波兰合作的研究项目，将研究现代工程材料在动态和循环加载条件下的损伤和断裂现象。主要研究人员是路易斯安那州立大学农业与机械学院的George Voyiadjis博士、波兰华沙基础技术研究所的Piotr Perzyna博士和Wojciech Dornowski博士以及波兰波兹南理工大学的Tomasz Lodygowski博士。本研究解决了材料非弹性行为理论中一个尚未解决的重要问题。它将增强对断裂的理解，特别是对现代工程材料在动载荷下热弹粘塑性流动过程中局部断裂现象的理解。本研究将理论建模、计算仿真以及与现有实验数据的比较相结合，以解决损伤现象中的局部化问题。本研究的结果有望增加对局部损伤现象的认识，并最终有助于减少和控制动载荷和冲击载荷的有害影响。这个工程研究项目实现了将美国和中欧/东欧的顶尖专家聚集在一起的计划目标，在平等、互惠和互利的基础上，在共同感兴趣和能力强的领域结合互补的努力和能力。

The is a U.S.-Polish cooperative research project that will investigate damage and fracture phenomena under dynamic and cyclic loading conditions in modern engineering materials. The principal investigators are Dr. George Voyiadjis from Louisiana State University & Agricultural and Mechanical College, Dr. Piotr Perzyna and Dr. Wojciech Dornowski from the Institute of Fundamental Technological Research (Warsaw, Poland) and Dr. Tomasz Lodygowski from Poznan University of Technology (Poznan, Poland). This research addresses an important and unresolved problem in the theory of inelastic behavior of materials. It will enhance the understanding of fracture and particularly localized fracture phenomena in thermo-elasto-viscoplastic flow processes under dynamic loadings in modern engineering materials. This study is the combination of theoretical modeling, computational simulation and comparisons with existing experimental data to address localization in damage phenomena. Results of this research are expected to increase the understanding of the localization damage phenomenon and eventually contribute to reducing and controlling detrimental effects of dynamic and impact loads.This project in engineering research fulfills the program objectives of bringing together leading experts in the U.S. and Central/Eastern Europe to combine complementary efforts and capabilities in areas of strong mutual interest and competence on the basis of equality, reciprocity, and mutuality of benefit.