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A general explanation of reduced volume method was introduced. This has allowed the simulation runs much faster without compromising the failure prediction of the multiscale fibre break model. The validation results with a material samples were shown. A certain mesh configuration to evaluate the cylinder has also been found to be the most effective in terms of computation time and prediction accuracy.
The developed model has certain limitations of the element size to be used in the simulation to characterise the strength of composite materials. A reduced volume method is proposed in order to reduce the number of degree of freedom of the finite element simulation.This study has revealed certain configuration to be followed to speed up the computation time.
The reduced volume method has been studied using the fibre break model from Mines ParisTech. This method allows less 3D finite elements to be used for predicting the failure of real scale composite structures. A favourable comparison results with racetrack specimens has been achieved. However, the comparison study with a type IV pressure vessels still requires more Evaluation.
The fibre-break model developed at Mines ParisTech has been able to show the effect of pressurisation rate on pressure vessels. This simulation however had to use a smaller model, as the computation time becomes enormous for simulating a real-scale pressure vessel. Reduced volume method then has been studied on different model configuration. The study showed that the method can be used only on certain configurations. It also gives a positive insight to reduce the computation time.
The developed fibre-break model from Mines-ParisTech requires an improvement in terms of calculation time for analysing real-scale model. By implementing the proposed method, the number of representative volume element and monte-carlo run can be optimised to obtain certain confidence level of the results. By reducing this level, faster computation can be done. This approach has given us a positive insight that it can be used for studying real-scale model of composite pressure vessels.