拉丁方-近似模型-碰撞_Crash_RSM_Subaru.pdf

Crashworthiness Optimization using Stepwise Regression Technique 2001 International iSIGHT Automotive Conference May 16-17, 2001 Wataru Taneda, SUBARU Wataru Taneda, SUBARU Satoshi Miyata, Engineous Japan, Inc. Satoshi Miyata, Engineous Japan, Inc. Keiji Kudo, Engineous Japan, Inc. Keiji Kudo, Engineous Japan, Inc. 1 Agenda ❑ Background – Approximations – RSM Update ❑ Stepwise regression technique PLEO PLEO is newly developed mini-sized car ❑ The results PLEO – Response surface shapes – Optimization – Trade-off curves – Robust optimization ❑ Conclusion SUBARU and Engineous Japan ❑ Engineous Japan proposed and provided stepwise regression technique to SUBARU. ❑ SUBARU prepared a crash model, which was in current design process. ❑ The results showed possibility of more weight reduction even from the current best design with the same safety level. ❑ The results was very well accepted by body design division in SUBARU. ❑ What we did? Approximations ❑ ISIGHT’s approximation models – Taylor Series Model – Response Surface Model with Update – Variable Complexity Model ❑ Better approximation model – More accurate – Less samplings or less computational resource ❑ Perfect approximation model can provide everything! –