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Ride comfort and road friendliness analysis of ISD suspension for heavy vehicles under variable vehicle mass |
School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, Jiangsu 210213, China |
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Abstract To solve the problems of heavy vehicle with load variation and road damage, the heavy vehicle passive suspension halfcar model and the heavy vehicle inerter-spring-damper (ISD) suspension halfcar model were established respectively. The heavy vehicle ISD suspension component parameters were optimized by the improved ant colony algorithm. According to time domain and frequency domain, the action mechanism of heavy vehicle ride comfort and road friendliness under the condition of variable vehicle mass was simulated and analyzed. The results show that compared with the traditional passive suspension, ISD suspension of heavy vehicle can greatly reduce the body acceleration, suspension working space and dynamic tire load. The root mean square value of centroid acceleration is improved by 15.08%, and the road damage coefficient is decreased uniformly and significantly in the range of full spring load rate with the root mean square value improved by 14.21%. ISD suspension of heavy vehicle has certain advantages for the comprehensive and coordinated improvement of ride comfort and road friendliness.
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