NUMERICAL SIMULATION OF COMPOSITE CAR SEAT CUSHION

Abstract

Reduction of energy consumption, improving performance and efficiency is one of the most important factors influencing current trends in the development of components used in the transportation and automotive industry. For car producers, one of the possible ways of achieving such a goal is to reduce the weight of individual components while maintaining or improving the material properties during practical application. Therefore, the requirement of weight reduction also applies to car seat cushions. The use of low-density composite foams using fibrous reinforcements is a suitable solution. These materials have strong nonlinear viscoelastic behavior which is time-dependent. Due to the synergistic effect of foam reinforcement, it is possible to reduce weight while maintaining the corresponding mechanical properties. In this study, numerical simulations were used for analysis and design of the seat cushion with PU foam and composite foam, and their results were evaluated. Mechanical properties of PU foam and composite foam are influenced by internal and external structure, shape and size of the cells, the volume of the filling material, and properties of the used polymer. Mechanical properties e.g. contact pressure, stress distribution, and the dependence of stress on the strain rate are investigated.

Recommended articles

MECHANISM OF MATERIAL REMOVAL DURING DIE-SINKING EDM OF TOOL STEEL EN 90MnCrV8

Luboslav Straka, Gabriel Dittrich
Keywords: Material Removal Rate (MRR) Tool Wear Rate (TWR). | Main Technological Parameters (MTP) | Electrode Wear Ratio (EWR) | Die-sinking Electrical Discharge Machining (Die-sinking EDM)

METHODOLOGY OF ARM DESIGN FOR MOBILE ROBOT MANIPULATOR USING TOPOLOGICAL OPTIMIZATION

Zbynek Paska, Jaroslav Rojicek, Petr Ferfecki, Martin Fusek, Dominik Heczko, Vaclav Krys
Keywords: FDM additive technology | 3D Print | ABS-M30 | DIC | material model | manipulator arm optimization | topology optimization

POLYOXYMETHYLENE FLOW ENHANCEMENT USING THE ROUGH SURFACE INJECTION MOULD CAVITY

Petr Fluxa, Michal Stanek, Martin Ovsik, Adam Dockal
Keywords: rheology | polyoxymethylene | surface roughness | polymer fluidity | injection moulding

DYNAMICAL LOAD OF LINEAR ROLLING GUIDES

Radka Jirova, Lubomir Pesik
Keywords: multibody systems | dynamical analysis | Lagrange equations | linear rolling guides | dynamical load