Reliability Analysis of Type III Gas Storage Vessel Under Pressure Loading

This work presents the suggestion of a model for the prediction of the reliability of type III gas storage vessel under pressure, considering the geometrical and mechanical uncertainties using the Monte Carlo method. Using the hoop stress for each ply, the Monte Carlo method was used to predict the distribution function of the mechanical response. The random design variables of the aluminum liner; which is overwrapped by a composite manufactured by filament winding. Nine random design variables with uncertainties were selected, namely: elastic constants of metallic and composite materials, ply angles, thickness, and finally the mechanical loading (pressure). To ensure the accuracy of the obtained results, we have performed 10(5) simulations. The obtained results showed that the elastic properties of the composite materials have no significant influence on the security of the composite vessels type III in relation to the manufacturing parameters: which are thickness, winding angle, and the loading pressure. The probability of failure increased significantly when all the random variables were considered simultaneously.