FIBER THICKNESS PREDICTION AND STRENGTH ANALYSIS OFCOMPOSITE HYDROGEN STORAGE VESSELS

Abstract

Abstract: Composite hydrogen storage vessels are widely used in aerospace and transportation as its high specific strength, specific stiffness and good corrosion resistance. This paper aims to provide a fast and accurate design method for composite hydrogen storage vessels through theoretical research and numerical simulation. Firstly, the composite winding layer is designed based on the grid theory, and then the cylinder contour is measured by 3D laser scanning technology, which verifies the accuracy of the prediction method of cubic spline dome thickness. At last, the finite element modeling of cylinder winding layer with variable thickness and angle was carried out by Abaqus finite element software. The important role of self-tightening in improving cylinder performance was analyzed, and the bursting pressure of cylinder was predicted by progressive damage. The results show that the cubic spline method can effectively predict the thickness distribution of the fiber. After auto-frettage, the Mises stress of liner decreased significantly under the working pressure, and the optimal auto-frettage pressure is obtained to be within 36.3 MPa~42.5 MPa. The failure mode of the vessel is predicted by progressive damage, and the final blasting pressure is 69.5 MPa, which meets the design requirements. The research results are of great significance to the design and manufacture of composite hydrogen storage vessels.

Key words: filament winding, thickness prediction, high precision modeling, auto-frettage analysis, progressivedamage, composites

CLC Number:

TB332

WANG Hua-bi, CHENG Shuo, ZU Lei, ZHANG Qian. FIBER THICKNESS PREDICTION AND STRENGTH ANALYSIS OFCOMPOSITE HYDROGEN STORAGE VESSELS[J]. Composites Science and Engineering, 2020, 0(5): 5-11.

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