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| Acceleration Test Method of Seats Based on Six-degree-of-freedom Road Simulation Technology |
| Received:August 01, 2019 Revised:December 12, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.10.013 |
| KeyWord:six-degree-of-freedom test rig amplification amplitude acceleration test dangerous section method damage |
| Author | Institution |
| ZHANG Kai |
Beijing Foton Daimler Automobile Co., Ltd, Beijing , China |
| DUAN Kai-xin |
Beijing Foton Daimler Automobile Co., Ltd, Beijing , China |
| LIU Yu-jin |
Beijing Foton Daimler Automobile Co., Ltd, Beijing , China |
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| Abstract: |
| The work aims to carry out the road simulation acceleration test of the seat through the six-degree-of-freedom vibration test rig. The acceleration spectra of six directions at the seat and floor installation position were collected in the complete vehicle test field. After preliminary processing such as deburring and drifting, the amplitude of the acceleration spectra was amplified to obtain the acceleration spectra after real damage amplification. Then, the strain spectra of the same point under the original acceleration spectra and the amplified acceleration spectra were collected on the six-degree-of-freedom vibration test rig separately. The real damage of each point under the original acceleration spectra and the amplified acceleration spectra was calculated by the dangerous section method. With the real damage value of the original road spectrum of each point as the abscissa and the real damage of the amplified road spectrum as the ordinate, each point was fitted to a straight line by curve fitting, and the slope of the straight line was the actual amplification multiple of the amplified acceleration spectrum damage, and the total cycle times were reduced by a corresponding multiple. Through verification, when the road spectrum amplitude was amplified about 1~1.2 times and the total damage was amplified about 1.5~2 times, the test time was shortened to about 1/2~2/3 of the original. This method further reduces test cycle and cost based on the original six-degree-of-freedom road simulation test of seats. |
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