QUESTION 4. The design of a spray-layup, scale to that of Fig Q4, shows too much deflection for the comfort of pedestrians. Comment on the following proposed solutions (pros and cons), and detail the best approach (which can either be from the solutions provided or your own) to remedy the issue. In answering the question, please make sure to justify your answers by drawing on appropriate engineering material theory. a) Upgrade from glass to carbon fibre as carbon has greater mechanical properties b) Upgrade the production method from hand-laminated to infusion to achieve a higher fibre weight fraction c) Upgrade from polyester to epoxy, as epoxy is stronger

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A: Considering the given stress- strain graph the solutions are provided in the following steps-

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FEA for Dynamic Problems

Finite element analysis or FEA is a computational tool that evaluates the approximate solution for a particular engineering problem. The tools provided by FEA help to evaluate the solutions of partial differential equations (PDEs) computationally following a numerical approach. Solutions of the PDEs can also be performed by following traditional algebraic approaches, but when the problem gets towards the complex side, it becomes very tedious and almost impossible to arrive at the solutions. In such cases, the FEA fulfills the purpose by evaluating the equations following multiple time steps and iterations. The more the time steps and iterations, the more accurate the solution. The solution plotted by FEA analysis and mathematical approaches varies asymptotically.