Multi-Objective Optimization of Occupant Survival Space of a Medium-Duty Vehicle under Rollover Condition Nanjing University of Science and Technology

Format:

Book

Conference/Event

Author/Creator:

Zhang, Jiangfan, author.

Contributor:

Wang, Liangmo

Wang, Tao

Yuan, Liu-kai

Zhang, Tang-yun

Zou, Xiaojun

Conference Name:

WCX SAE World Congress Experience (2024-04-16 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2024

Summary:

Due to the high center of gravity of medium-duty vehicles, rollover accidents can easily occur during high-speed cornering and lane changes. In order to prevent the deformation of the body structure, which would restrict the survival space and cause compression injuries to occupants, it is necessary to investigate methods for mitigating these incidents. This paper establishes a numerical model of right-side rollover for a commercial medium-duty vehicle in accordance with ECE R66 regulations, and the accuracy of the model is verified by experiment. According to the results, the material and size parameters of the key components of the right side pillar are selected as design variables. The response result matrix was constructed using the orthogonal design method for total mass, energy absorption, maximum collision acceleration, and minimum distance from the survival space. A multi-objective optimization of 25 sets of sample points was performed using a multi-factor weight analysis method, with the highest weighted objective being the minimum distance between the pillar and the survival space. The results indicate an 11.3% increase in the minimum distance between the column and the survival space after a rollover, an 18.5% decrease in peak acceleration, and a 13.7% reduction in total body weight. This improves the rollover safety of the entire vehicle

Notes:

Vendor supplied data

Publisher Number:

2024-01-2263

Access Restriction:

Restricted for use by site license