Mechanical property prediction of composites based on asymptotic homogenization theory
ZHANG Yan-lin
JIANG Xue-guang
Abstract：In order to effectively predict the mechanical properties of composites, the carbon fiber reinforced wood composites were taken as the study object, and the analytical model based on the asymptotic homogenization theory was established. The macroscopic and microscopic scales were coupled with small parameters, the mechanical variables asymptotically expanded with the small parameters were substituted into the control equations of unit cell, and the solution equations of equivalent elastic modulus of composites were finally derived. The unit cell model for the composites was established with the ANSYS software, and the elastic modulus was predicted and analyzed under the periodic boundary conditions. The results show that compared with the general engineering experience, the asymptotic homogenization theory has more accurate prediction accaracy, and the prdicted results are in good agreement with the physical experimental results in a certain range, which verifies the effectiveness of the theory.
Keywords：asymptotic homogenization theorycompositefinite elementunit cell modeldouble scaleeffective elastic modulusequilibrium equationboundary condition
Publication Date：2017-09-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 507-512 )