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| Title: | ANALYSIS AND MODELLING OF THE BURST PRESSURE OF HIGH PRESSURE HYGROGEN TANKS | |
| DOI No: | 10.1142/9789812838025_0020 | |
| Source: | MATERIALS ISSUES IN A HYDROGEN ECONOMY (pp 211-220) | |
| Author(s): | D. CHAPELLE
LMARC-FEMTO-ST, Université de Franche-Comté, Besançon, France F. THIEBAUD LMARC-FEMTO-ST, Université de Franche-Comté, Besançon, France D. PERREUX LMARC-FEMTO-ST, Université de Franche-Comté, Besançon, France |
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| Abstract: | The present study deals with the analysis of the cylindrical part of a high pressure hydrogen storage vessel, combining an aluminium liner and an over wrapped filament wound composite. The first is a barrier against the hydrogen permeation whereas the second allows to reinforce the structure and to decrease the weight. This widely used technique still requires important time investments. Regarding at mobile application and taking into account 1 kg hydrogen per 100 km consumption of the full cell, one of the main goals is to store at least 5 kg of hydrogen in the smallest volume. Based on mechanical considerations, the model provides an exact solution for stresses and deformations on the cylindrical section of the vessel under thermo-mechanical static loading. The liner is assumed to behave as an elastic plastic material whereas the laminate is supposed to be an elastic damageable material; the Tsaï-Wu criterion is introduced to predict the failure of each layer, and finally the burst of the structure. The effect of the stacking sequence on the gap occurrence, on the residual stress magnitude and on the structure durability may be then investigated. In the present paper, after an overview of the theoretical background, a comparison between experimental investigations and results obtained with the model is presented. A preliminary discussion is attempted in order to assess the initial stress state of the structure. Further works should then lead us to predict the mechanical response of the vessel when submitted to cycle loadings, when experiments are still carried out, and before an optimisation of the composite laminate staking sequence is performed. | |
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