Finite Element Analysis And Optimization Design Of Composite Pressure Vessel

Composite pressure vessel has strong designability, has been widely used in aviationand space, automotive, chemical industries. However, with the progress of science andtechnology, requirements composite pressure vessel having a better performance.Scientific and accurate research for the mechanical response of the composite pressurevessel has important theoretical significance and engineering application value.Using ANSYS finite element software to establish a three-dimensional finite elementmodel of composite pressure vessel, its mechanical response under working pressure andverify pressure are analyzed, the stress distribution of the metal liner layer, spiral-windlayers and hoop-wind layers are obtained, and the results were analyzed and discussed.Spiral-wound layer thickness, hoop-wind layer thickness and head shape is the mainfactors influence the composite pressure vessel performance, optimize design on them hasa very important significance. First of all, using PSO combine with ANSYS finite elementanalysis structural optimization method, on the premise of meet the overall performance,with spiral-wind fiber layer thickness and hoop-wind fiber layer thickness as the designvariables, the total weight of composite pressure vessel fiber layers as the objectivefunction, the optimization design for composite pressure vessel was carried out, and obtainthe optimum fiber thickness. Then, research the head shape impact on the performance ofcomposite pressure vessel, with hoop-wind fiber layer thickness and the ratio ofoval-shaped head’s minor axis with long axis as the design variables, minimum ratio ofthe total fiber weight with the internal volume as the objective function, the compositepressure vessel head shape optimization design was carried out.