The elasto-damage theory of the components assembling model

• 来源期刊: 中国科学G辑(英文版)
• 年，卷（期）: 2009,（1）
• 页码范围: 139-150
• 页数: 12页
• 语种: 英文
• DOI: 10.1007/s11433-009-0002-8

摘要

The potential energy in materials is well approximated by pair functional which is composed of pair potentials and embedding energy. During calculating material potential energy, the orientational com-ponent and the volumetric component are derived respectively from pair potentials and embedding energy. The sum of energy of all these two kinds of components is the material potential. No matter how microstructures change, damage or fracture, at the most level, they are all the changing and breaking atomic bonds. As an abstract of atomic bonds, these components change their stiffness during dam-aging. Material constitutive equations have been formulated by means of assembling all components' response functions. This material model is called the component assembling model. Theoretical analysis and numerical computing indicate that the proposed model has the capacity of reproducing some results satisfactorily, with the advantages of great conceptual simplicity, physical explicitness, and intrinsic induced anisotropy, etc.