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한창용(Chang Yong Han),장왕진(Wang Jin Jang),이성범(Seong Beom Lee),예수해(Soo He Ye) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
A vehicle demand is gradually increasing. Interest of people is increasingly taking a safety system to keep for life in a clash or collision accident of vehicle. Seat belts are designed to keep the vehicle passengers firmly in place during a collision or other traffic accidents. Seat belt system consists of mainly four restraining parts: D-ring, buckle, anchorage, and retractor. Retractor is the major part which controls spool-in or out of webbing according to acceleration pulse in seat belt. Currently, spool of automotive seat belt is made of Al-alloy because of light weight. In this paper, we performed solid model of spool by 3D scanner. Moreover, we performed finite element analysis of optimized spool which was under various load between webbing and spool. It is confirmed that the result values of structural analysis. In conclusion, we obtained optimized shape of automotive spool. And, we also predict fractural of spool.
장왕진(Wang Jin Jang),박종식(Jong Sik Park),정재영(Jae Young Jeong),예수해(Soo He Ye),이성범(Seong Beom Lee) 한국자동차공학회 2007 한국자동차공학회 지부 학술대회 논문집 Vol.- No.-
Seat belt is one of the most important parts in an automobile. Seat belt consists of retractor, D-ring, buckle, anchorage. Retractor is the major part which controls spool-in or out of webbing according to acceleration pulse in seat belt. From energy efficiency and environmental point of view lighter weight car becomes hot issue in the automobile industry. In this paper, light weight study of spool was performed by 3D scanning equipment and finite element analysis. Scanning data was converted into IGES file and then improve accuracy in comparison with three dimension model. Spool is made from Al alloy. So, we implemented structural analysis of spool's material. Mg alloy is lighter than Al alloy. But analysis result showed that Al alloy and Mg alloy's stress value is close. Al alloy is increasingly being replaced with Mg alloy and this usage is expected to increase substantially.