Simulation-based Design Synthesis of Articulated Heavy Vehicles for Improving Manoeuvrability and Stability
This paper presents a design method for articulated heavy vehicles (AHVs) in order to coordinate the trade-off relationship between the low-speed manoeuvrability and high-speed lateral stability. AHVs have poor manoeuvrability when traveling at low speeds on local roads and city streets. On the other hand, these vehicles exhibit unstable motion modes at high speeds, including jack-knifing, trailer sway and roll-over. From the design point of view, the lowspeed manoeuvrability and high-speed stability have conflicting requirements on some design variables. Due to AHVs complex configurations, limited modeling and simulation tools have been developed. The dynamic analysis and design synthesis of these vehicles are mainly based on simplified linear yaw plane models. A design method using a genetic algorithm and a multibody dynamic package, TruckSim, is proposed to coordinate the trade-off relationship. To test the effectiveness of the design method, an AHV with the configuration of a tractor and two semi-traile rs are optimized. The objective of the design problem is to minimize path-following off-tracking (PFOT) while keeping rearward amplification (RWA) ratio as close as possible to one. Compared with the baseline vehicle, the optimized design decreases the RWA ratio by 3.288% and PFOT by 7.228%. It is indicated that the conflicting design criteria of manoeuvrability and stability can be simultaneously improved. The proposed approach may be used for identifying desired design variables and predicting performance envelopes in early design stages of AHVs.
Dhruv Oberoi Yuping HE
Faculty of Engineering and Applied Science University of Ontario Institute of Technology Oshawa, Ontario, Canada LIH 7K4
国际会议
The 4th International Conference on Mechanical Engineering and Mechanics(第四届国际机械工程与力学会议)
苏州
英文
193-197
2011-08-11（万方平台首次上网日期，不代表论文的发表时间）