Implementation of the calculation of the stress-deformed state of layered pipes from composites and determination of wave velocity in hydrolic impact

The problem of computer implementation of calculating of the stress-strain state of laminated pipes made of composites and determining the wave velocity during water hammer is solved. Two variants of the problem are considered: a pipe with an inner coating consisting of a functionally gradient material, and a pipe with an inner coating of a composite, a fibrous composite consisting of a matrix and fibers, the elastic modulus of which is determined by the rule of mixtures.