Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Comparing Tsai-Wu and Tsai-Hill Failure Criteria for High-Pressure Vessel Design under Uncertainty
Submission Author:
Henrique Cordeiro Novais , SP
Co-Authors:
Henrique Cordeiro Novais, Samuel da Silva, MARIANA ALVES, Carlos Alberto Cimini Junior
Presenter: Henrique Cordeiro Novais
doi://10.26678/ABCM.COBEM2023.COB2023-0262
Abstract
This study compares two widely used failure theories for characterizing composite materials, the Tsai-Wu and Tsai-Hill failure criteria. The paper's main objective is to evaluate the performance of both criteria in a high-pressure vessel design project, considering the uncertainties in material properties at the lamina level and in the internal pressure to which the vessel is subjected. The analysis of histograms of failure index fluctuations shows that, contrary to a purely deterministic approach, each failure criterion can be more or less conservative when there is variability in the system caused by different reasons. A sensitivity analysis was also performed, in order to determine the contributions of the individual inputs to the output uncertainty. This probabilistic approach highlights the importance of considering uncertainty analysis to design safer and more economical structures.
Keywords
Composite Materials, Failure Criteria, High-pressure vessels, uncertainty analysis, Sobol Indices
