Dynamic Simulation and Fatigue Durability Assessment of All Terrain Vehicle (ATV)
| Autor: | Yu-Ren Tsai, 蔡祐任 |
|---|---|
| Rok vydání: | 2010 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 98 The purpose of this study is to build a numerical simulation technology by integrating CAD modeling and CAE analysis for All-Terrain Vehicle (ATV). The effects of on-road factors such as car speed, rider’s weight, riding type, body part, road type and suspension spring constant on riding comfort and fatigue durability were investigated. Furthermore, the accuracy of numerical simulation technology was testified by a high-fidelity road simulator. Two different experiments were designed. The objective of the first experiment was to verify the accuracy of numerical simulation. The objective of the second experiment was to understand the effect of on-road factors on riding comfort and fatigue durability of ATV frame. On the development of numerical simulation technology, we employed the Pro/Engineer software to create an ATV frame and imported it into the ADAMS software for whole vehicle dynamic vibrating simulation. Then, we calculated the acceleration history and loading history. The second, we adopted the ISO 2631-1 standard to evaluate the riding comfort level. Meantime, we imported the loading history into the ANSYS software and calculated the stress history of ATV frame. Finally, we used the high cycle fatigue theory to evaluate fatigue durability. Experimental data showed that the simulated results of ADAMS and ANSYS analyses were similar to those of road simulation testing. It verified the accuracy of the present numerical simulation. Moreover, analytic results revealed that higher vehicle velocity or tossing road would lead to the inferior riding comfort and fatigue durability of ATV frame. The increase of rider’s weight resulted in better riding comfort and fatigue durability. Higher suspension spring constant would lead to poor riding comfort but it led to better fatigue durability. No significant difference of riding comfort was found in riding type. The buttock showed the highest acceleration among three body parts. We believed that these findings would be helpful to improve the vehicle design. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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