Bug-Rider電動車結構碰撞安全最佳化

Bug-Rider Electric Vehicle Crashworthiness Structure Optimization

MARIA(Maria Lecina)

指導教授 ： 黃秀英

國立臺北科技大學/機電學院/車輛工程系所/碩士(2011年)

https://doi.org/10.6841/NTUT.2011.00173

摘要

In the recent years, environmental protection becomes one of the major focuses all over the world. Along the trend, many automotive manufacturers have been researching, designing, and producing environmentally friendly vehicles. NTUT Light-weight Electric Vehicle is one of those. The LEV is an intelligent light weight electric vehicle for the elderly to satisfy their needs for mobility and safety. As part of the LEV project this study goal is to convert an existing combustion engine all terrain vehicle, Bug-Rider, into a two-passenger electric driven street vehicle.
This thesis focused on developing a lightweight design to improve the functional performance and frontal crashworthiness as well as the cruising abilities of the new converted electric vehicle. A structure re-design is needed. Moreover, with the limited power provided by the given batteries, light weight design is critical. In this study a Three-Dimensional Computer Aided design model was created from scratch by measuring hardware. Hypermesh was used for the finite element analysis pre & post-processing and LS-Dyna for the dynamic analysis.
From the study, a modified design is proposed to improve the vehicle crashworthiness by designing an innovative bumper with a modified structure to absorb the impact energy. The new proposed structure improved the frontal impact performances by 35%. The residual space was improved by 56%, energy absorption by 14%, and HIC15 by 36%. The study results will be proposed for light weight vehicle applications.

關鍵字

Light-Weight Electric Vehicle ； Optimization ； Analysis ； Crashworthiness

並列摘要

In the recent years, environmental protection becomes one of the major focuses all over the world. Along the trend, many automotive manufacturers have been researching, designing, and producing environmentally friendly vehicles. NTUT Light-weight Electric Vehicle is one of those. The LEV is an intelligent light weight electric vehicle for the elderly to satisfy their needs for mobility and safety. As part of the LEV project this study goal is to convert an existing combustion engine all terrain vehicle, Bug-Rider, into a two-passenger electric driven street vehicle.
This thesis focused on developing a lightweight design to improve the functional performance and frontal crashworthiness as well as the cruising abilities of the new converted electric vehicle. A structure re-design is needed. Moreover, with the limited power provided by the given batteries, light weight design is critical. In this study a Three-Dimensional Computer Aided design model was created from scratch by measuring hardware. Hypermesh was used for the finite element analysis pre & post-processing and LS-Dyna for the dynamic analysis.
From the study, a modified design is proposed to improve the vehicle crashworthiness by designing an innovative bumper with a modified structure to absorb the impact energy. The new proposed structure improved the frontal impact performances by 35%. The residual space was improved by 56%, energy absorption by 14%, and HIC15 by 36%. The study results will be proposed for light weight vehicle applications.

並列關鍵字

Light-Weight Electric Vehicle ； Optimization ； Analysis ； Crashworthiness

參考文獻

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[3] C.-K. C. Huang, P.-K. Cheng, and Y.-T. Lin, “Lightweight Chassis Structure Design of the Electric Vehicle”, The 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium & exhibition,2010.

[4] H.-Y. Hwang, Y.-S. Chen, K.-L. Kuo, “A Space Frame Structure Design for an Electric Vehicle”, The 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium & exhibition,2010.

[5] G. Koop and E. Beeh, “New multi material design concepts and high integration light metal applications for lightweight body structures”, Materials Science Forum, 2010, vol. 638-642, pp 437-442.

[7] M. Asadi, “An Investigation to Compare the Application of Shell and Solid Element Honeycomb Model in ODB”, DYNAmore GmbH, 2009.