The Quest of a Universal Fracture Law

9320405利博维茨这项研究将探索是否存在一个具有足够普遍性的“普遍的”断裂定律，以便它可以用于各种不同的应用，并确定它采取什么形式。这项工作将需要对现行的特别破碎法进行严格审查，然后确定制定普遍破碎法的指导原则。最后，需要得到这一定律的显式形式，并与各种结构材料、结构几何形状和加载条件下的实验结果进行验证。如果这项调查确定这样的普遍规律不存在，那么调查人员将开发一个专家系统，用于实际机械和结构系统的断裂分析。***

9320405 Liebowitz This research will explore whether there exists a "universal" fracture law that has sufficient generality so that it can be used for a large variety of applications, and to determine what form it takes. The undertaking will require a critical examination of the currently existing special fracture laws, and then an identification of the guiding principles for the formulation of a universal fracture law. Finally, the explicit form of this law needs to be obtained, and verified against experimental results for a variety of structural materials, geometry of structure, and loading conditions. Should this investigation establish that such a universal law does not exist, then the investigators will develop an expert system to be utilized for fracture analysis of real mechanical and structural systems. ***