- 期刊
正撞氣囊靜態與動態測試之模擬分析
Simulation of Static and Dynamic Test of Frontal Airbag
摘要
正面碰撞爲車禍發生比例與死亡率最高的碰撞事故，因此，爲了有效降低乘員的傷亡，各大車廠不斷的研發智慧型的被動安全系統，其中正撞氣囊爲主要的裝置之一，氣囊主要可緩衝乘員頭部在事故中的衝擊力，以及避免與車內結構接觸碰撞導致受傷與死亡。爲了證實正撞氣囊在碰撞事故中的防護性能，必須進行各式安全性法規檢測。由於各項安全檢測及碰撞試驗的成本過於龐大且重複性低，故各大車廠及氣囊研發單位爲節省成本及人力資源，採用CAE分析工具取代高成本的實驗測試。本研究以MADYMO軟體建立正撞氣囊數值模型；爲評估氣囊模型的安全性，並進行氣囊靜態展開、擺錘試驗之數值模擬分析。爲驗證本論文氣囊模型與碰撞測試數值模擬的正確性，相關模擬結果並與實驗測試結果進行比對。本論文除可建立國內車輛碰撞數值模擬分析能量，並提供各大車廠及研發單位進行安全且有效氣囊的設計參考。
並列摘要
Frontal impact collisions are the most frequent cause of serious motor vehicle accidents. Many protection equipments are widely used in the vehicle for reducing the injury severity of occupant. Airbags are one of more effective occupant restraint systems for preventing injury in the case of a collision accident. Airbags can cushion the crush forces and reduce the chance that the occupant's head and upper body will strike some part of the vehicle's interior. In order to develop and assess an effective and safe airbag for occupant protection, the sled and crash tests must be performed. And the occupant injuries are necessary to conform the safety regulations. Real car crash tests are complex and expensive. CAE methodologies can increase product development process efficiency. As such, computer simulation is an economical and time efficient alternative to physical testing. In this study, airbag module technologies in MADYMO were discussed. Finite element model of airbag was created using the MADYMO software. In order to assess the safety of airbag module, the numerical simulations of static deployment test and pendulum test were performed. To verify the accuracy of the proposed airbag module, simulation results are compared with those obtained from experimental tests. These numerical procedures can establish the simulation capability of car crash test. The results indicate that the numerical model proposed in this study has considerable potential for guiding the future development of safety and efficiency of airbag.