A two-scale method for identifying mechanical parameters of composite materials with periodic configuration

• 来源期刊: 力学学报（英文版）
• 年，卷（期）: 2006,（6）
• 页码范围: 581-594
• 页数: 14页
• 语种: 英文

摘要

In this paper,a two-scale method (TSM) is presented for identifying the mechanics parameters such as stiffness and strength of composite materials with small periodic configuration.Firstly,a formulation is briefly given for two-scale analysis (TSA) of the composite materials.And then a two-scale computation formulation of strains and stresses is developed by displacement solution with orthotropic material coefficients for three kinds of such composites structures,I.e.,the tension column with a square cross section,the bending cantilever with a rectangular cross section and the torsion column with a circle cross section.The strength formulas for the three kinds of structures are derived and the TSM procedure is discussed.Finally the numerical results of stiffness and strength are presented and compared with experimental data.It shows that the TSM method in this paper is feasible and valid for predicting both the stiffness and the strength of the composite materials with periodic configuration.