A. E. Burov

PROBABILISTIC MODELING OF THE LOAD-BEARING CAPACITY OF A COMPOSITE PRESSURE VESSEL

Modeling possible limit states and predicting load-bearing capacity, accounting for the scatter of mechanical properties, is an integral part of ensuring the strength and reliability requirements for structures. In this study, based on a probabilistic approach, we analyze the influence of variations in the parameters of the composite shell on the load-bearing capacity of a high-pressure metal-composite tank manufactured by continuous composite tape winding on a thin liner. Winding angle, fiber volume content, and ultimate fiber strength are taken as the variable parameters. Numerical modeling based on a model taking into account the processes of damage accumulation and degradation in the mechanical properties of the material is used to predict the mechanical behavior of the structure. Based on the calculation results, the burst pressure distribution function is obtained, which gives an idea of the influence of manufacturing process variability on the load-bearing capacity of the tank.

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