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Optimum Design of Net Reinforced Composite Pressure Vessel

[+] Author Affiliations
Nobuhiro Yoshikawa

University of Tokyo

Paper No. PVP2004-2269, pp. 131-135; 5 pages
  • ASME/JSME 2004 Pressure Vessels and Piping Conference
  • Elevated Temperature Design and Analysis, Nonlinear Analysis, and Plastic Components
  • San Diego, California, USA, July 25–29, 2004
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4667-9
  • Copyright © 2004 by ASME


A new breed of structural reinforcement for high pressure vessels is proposed by netted filament, whereas the conventional composite containers are fabricated with continuous filament winding. An enhancement of design variation is aimed at for light-weight together with adequate structural reliability ensured by means of structural optimization technique in the present study. Modeling the net segments as bar finite elements contacting with the surface of the metallic liner, a shape-finding problem raised by the geometrical non-linearity with the finite rotation of bar element is posed. The problem is solved on the basis of principle of minimum strain energy with respect to nodal position of the element. A formulation is derived to search for the optimum configuration of net reinforcing spherical dome. The optimum length of net segment is determined so as to realize uniform strain in net. Numerical examples validate the proposed formulation.

Copyright © 2004 by ASME



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