Layered composite and contact layer. Effective modulus of elasticity

The effective modulus of elasticity of a layered composite is one of the important characteristics. At the moment, the so-called mixture formula is most often used to calculate this characteristic. However, as a number of experiments demonstrate, the formula of the mixture does not always allow calculating the effective modulus of elasticity. The reason for this fact is the inhomogeneous stress-strain state arising in a layered composite. This article presents a method for finding the effective modulus of elasticity of a layered composite based on the contact layer model. Such approach to the calculation allows us to take into account not only the volume content of the composite components, but also many other parameters of the model.