Title: A NOVEL APPROACH TO THE ANALYSIS AND OPTIMIZATION OF COMPOSITE STRUCTURES DEMONSTRATED ON A COMPOSITE PRESSURE VESSEL DESIGN

Authors: Robert M. Jopson, Jeffrey A. Wollschlager

DOI: 10.33599/nasampe/s.23.0207

Abstract: The choice of a composite material product form and a composite manufacturing method frequently impacts the ease with which design parameters can be updated or optimized in structural simulation models. Further, traditional shell models often cannot capture the physics required to achieve acceptable accuracy and ply-by-ply solid models may be accurate but are difficult to develop and make design parameter updates. Presented herein is a generic composite structural design methodology which allows for rapid design parameter updates while retaining the simulation accuracy typical ply-by-ply solid models, without the need for solid modeling. The methodology pairs ply-slicing technology, a data structure which is used to abstract the details of macro-scale composite layers to the scale of an individual tow, with multiscale technology, which allows for failure assessment to be applied at the tow constituent fiber and matrix scale. First, it is demonstrated that shell models using this methodology achieve comparable accuracy to solid models for typical design requirements. Then the methodology is applied to the design optimization of a filament wound composite pressure vessel to determine the winding angles and the number of layers of each winding angle to meet typical design requirements with minimum mass.

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Conference: SAMPE 2023

Publication Date: 2023/04/17

SKU: TP23-0000000207

Pages: 15

Price: $30.00