The description of the mechanical behavior composite materials is an open challenge in engineering. focus this work on micro-cracked/micro-porous composites, made stiff grains embedded a cracked or porous deformable matrix. Grains interact between each other and with cracks pores localized at interfaces, which reduce contact area grains. Pores’ interaction also taken into account. We apply two-...

Kienzler and Hernnan recently showed that good and remarkably simple approximations of the stress intensity factors of cracks in beams can be obtained by bending theory estimations of the strain energy release as the crack is widened into a band of finite width. Their method has been based on equating this energy release to the energy release rate due to crack length extension, which has been p...

a constitutive model based on two–dimensional unstructured galerkin finite volume method (gfvm) is introduced and applied for analyzing nonlinear behavior of cracked concrete structures in equilibrium condition. the developed iterative solver treats concrete as an orthotropic nonlinear material and considers the softening and hardening behavior of concrete under compression and tension by using...