DYNAMIC AND NONLINEAR BEHAVIOUR OF DEFORMATION AND FRACTURE OF QUASICRYSTALLINE MATERIALS

摘要：

It is well-known that there are two displacement fields in the quasicrystals,one is the conventional displacement field named phonon field according to the terminological words of physics,the other is the phason field,the unusual displacement field.This leads two strain tensors and corresponding stress tensors.In the dynamic problems there are different points of view since the new solid phase discovered.This article discusses the arguments and compares the results coming from the different frameworks.Though the material presents brittle behaviour at low and medium temperature,it can dramatically undergo plastic deformation at high temperature.Because here is lack of any constitutive law of the plasticity so far,the study is confronted with fundamental difficulty.By using some simple physical models,the analytic solutions for deformation and fracture of plasticity of quasicrystalline have been constructed.

关键词： quasicrystals dynamics nonlinearity

作者: T.Y.Fan Z.Y.Tang

作者单位: Department of Physics,Beijing Institute of Technology,Beijing 10081,China Southwest Jiaotong University Hope College,Nanchong,Sichuan 637900,China

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 846-852

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）