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Carbon Fiber Reinforced Polymer(CFRP)기반 Lower Arm 최적화 관련 연구
공경일(Kyongil Kong),박영빈(Young-Bin Park),박형욱(Hyung Wook Park),금종원(Jong Won Keum),정학순(Hak Soon Jeong),정영복(Young Bok Jung) 한국자동차공학회 2011 한국자동차공학회 지부 학술대회 논문집 Vol.2011 No.4
Nowadays, automotive manufacturers have been adapting the lightweight materials instead of the steel due to increasing demand for reducing the automotive weight. However, due to the safety, the lightweight materials have to provide the high static/dynamic stiffness. Therefore, the carbon fiber reinforce polymer(CFRP) as been emerging as the candidate of the lightweight materials for next generation automotive components. There is also the need for optimizing the structure of the automotive components based on the CFRP. In this paper, the finite element method(FEM) simulation was performed on the steel as well as composite to determine the number of the carbon fiber plies made of the composites. The simulation result shows that the optimal number of the carbon fiber plies is 17 for the woven fabric ply and 50 for unidirectional ply with satisfying the Tsai-Wu failure criterion.
Design Optimization of CFRP Lower Arm Using Failure Criteria
Joel Renaud Gnidakouong Ngouan,Kyongil Kong,Young-Bin Park(박영빈),Hyung Wook Park(박형욱),Jong Won Keum,Hak Soon Jeong,Young Bok Jung 한국자동차공학회 2010 한국자동차공학회 지부 학술대회 논문집 Vol.2010 No.12
In this paper, we present a design procedure attempting to replace the lower arm made of steel by a carbon fiber reinforced plastic (CFRP). We chose plain woven carbon fiber fabric and epoxy as reinforcement and matrix, respectively. Bending test simulation was performed on steel as well as on composites to determine the number of carbon fiber plies required to yield similar mechanical properties as steel. We also analyzed the composite lower arm and flexural specimens made of composites. Results showed that we need 22 plies for our composites materials to behave mechanically in the same way as steel and 73 plies to ensure their safety according to the Tsai-Wu criterion, which warrants further investigation. Reinforcement type, fiber orientation, and stacking sequence are to be optimized in the next step.