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固体的破坏过程是力学家与固体物理学家为之奋斗了三个半世纪的跨层次难题,其现阶段力学研究进展的主要特征在于宏细观结合。研究固体的破坏需追溯从形变、损伤至断裂的宏细观过程。前两个孕育过程可由本构理论描述其演化,而后一个终极过程则依赖于断裂学说。本文扼要论述清华大学破坏理论与塑性研究室近五年来在“固体的宏细观本构理论与断裂”这一前沿基础科研领域的部分成果。
The process of solid destruction is a three-and-a-half-century cross-layer problem that the mechanics and solid state physicists have struggled with. The main feature of the progress of mechanics at the present stage is the combination of macro and micro. The study of solid destruction needs to be traced back to the macro-scale process from deformation, damage to fracture. The first two inoculation processes can be described by constitutive theory of their evolution, and the last one depends on the fracture theory. This article briefly discusses some of the achievements made by Tsinghua University in the field of basic theory of macroscopic and meso-structure theory and fracture in recent five years.