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Simulating Metamodel for Urban Bus Seats Design

Abstract:

The finite element analysis is useful to pbkp_redict the displacements and strength of the components of an urban seat bus. However, this analysis has a high computational cost when explicit dynamic technique is applied. This work uses Ansys LS Dyna software to carried out a complete 3D static test of an urban seat bus according with the Regulation No. 80 of the Economic Commission of the United Nations for Europe. To reduce the computational cost, we applied a bidimensional frame analysis (metamodel) using direct matrix method to obtain nodal displacements in 12 different models. The variables of this study were: Thickness, sections and length of structural elements in order to optimize the strength of the seat. The results showed a range of variation about 0.1 % to 3.0% between finite elements analysis and metamodels Finally, it was proved that metamodels reduce the time analysis and can be used in a pre-design stage.