1,721,383 research outputs found
Lightweight design of vehicle body- a contribution toward greener environment
No full textThe vehicle mass experienced a period of progressive increase. Nowadays as it is essential to decrease both the fuel consumption and the CO2 production, lightweight design becomes a relevant target for car manufacturer. One of the considered strategy toward lightweight is the substitution of the material used for manufacturing the different parts of the car body. Together with the new developed HSS steels, aluminium and magnesium are considerded. Recently composite material solutions have gained a lot of attention due to their very interesting characteristic. The paper discusses some the relevant aspects when developing a new material solution from the material production to the end-of-life. The paper includes one example of results that can be achieved with properly oriented light weight design procedure. Key words: lightweight design, car body, HS steel, light alloys, composite material
Numerical investigation on plastic collapse of thin walled beams subjected to biaxial bending
No full textComparison of elastic structural behavior between traditional car steel door and composite door by FEM simulations
No full textthe static elastic structural behavior of the front lateral door of Toyota Yaris 2010 is analyzed by means of finite element method with ABAQUS 6.10 Standard. The door frame is made with two different materials: the traditional steel material (that is the Normal Production solution) and composite material (T300-5208, that is our innovative lightweight solution). The steel door model is taken from the existing finite model of the car while the composite models are developed by authors. There are three different parts in composite door structure: composite beams, aluminum alloy joints and adhesives. Maximum stress, maximum displacement and stiffness of specified direction are calculated in three load cases, as a result, it is found that the composite door models have better performances than traditional steel one. Further the estimated reduction in weight for the composite solution is of the order of magnitude of more than 50%
Composite impact attenuator with shell and solid modeling
No full textComposite have been increasingly used in cars for their advantages of lightweight, high strength, corrosion resistance and easy manufacturing. Recently, carbon fiber reinforced plastic (CFRP) gains growing popularity in numerous advanced and high performance applications for crashworthiness thanks to its superior impact resistance, respect to metals or other composite materials. Maximising impact protection of carbon fibre reinforced plastic laminated composite structures, predicting and preventing the negative effects of impact on passengers are paramount design criteria for ground vehicles. In this paper the impact modelling of a frontal impact attenuator for a specific racing car will be investigated. The current work is based on the application of an explicit nonlinear finite element code, such as LS-DYNA, and on the experimental verification of the results, by means of an appropriately instrumented drop weight test machine. The thin-walled layered structure was numerically analysed using both shell and solid elements in order to reproduce the laminate as closely as possible, taking into account also the possibility during crushing of an interlaminar failure which plays a significant role during energy absorption mechanism. The proposed models are able to predict, with a good level of accuracy, the deformation process of such impact attenuator when subjected to dynamic loading as those imposed by technical regulation
Experimental investigation of the structural behaviour of hybrid metal/composite thin walled box beams
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Simulation of square box deep drawing using an explicit code - Numerical and experimental results
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