A new method of stiffness prediction for composite plate structures with in-plane periodicity

This paper proposes an equivalence principle of macroscopic internal virtual work and microscopic internal virtual work, and uses it to predict the effective stiffnesses of composite plate structures with in-plane periodicity. The macroscopic internal virtual work is produced by internal forces acting on generalized virtual strains, and the microscopic internal virtual work is produced by microscopic stresses acting on microscopic virtual...