제안 방법

• To be applicable to a cushion system, material must have enough energy absorbing capabilities while satisfying the safety requirements of the vehicle occupant. Static tests were performed for candidate materials as modules such as Quard-Guard system module, sand bag, recycled tires, Geo-Container, Geo-Cell and Expanded Polystyren (EPS) Blocks and showed that EPS block of 30kg/cm³ density is a good material for module type crash cushion (Ko, et al 2007), Tb check the dynamic effect of EPS block drop tests have been made with impact speed up to 35.6km/h. Drop test results were compared with static test results and no appreciable difference were found.
• 8. Using this data crash cushion composed of 9 EPS blocks is analysed by MMA for 0.9ton-80km/h and 0.9ton- 60km/h impact and safety analysis is performed.
• al. performed statics and drop tests for the Expanded Polystyrene Blocks. Analysis of the drop test showed that 45004500300 EPS block with 9 holes had resisting force of around 5000kg when it was assumed as rigid perfectly plastics spring The unit weight of the module was 1.