31 3 Vol. 31 No. 3 218 9 Journal of Shijiazhuang Tiedao University Natural Science Edition Sep. 218 1 1 2 1 2 1 1. 543 2. 543 U462. 3 217-2 - 16 A 295-373 218 3-63 - 6 1-4 5-7 8-11 1 11 11 398 mm 86 mm 32 mm 5 7 mm 1 3 ANSYS 1 DOI 1. 13319 /j. cnki. sjztddxxbzrb. 218. 3. 1 1147218 NCET-13-913 1989 E-mail 178627173@ qq. com. J. 218 31 3 63-68. 16Mn Q345 1 1
64 31 1 /MPa / kg m - 3 /MPa /MPa 2. 1E + 11. 28 7 7 345 51 ~ 56 ANSYS 6 Hz 6 6 2 (a) 一阶垂向弯曲 (b) 一阶侧向弯曲 (c) 一阶扭转 (d) 二阶侧向弯曲 (e) 二阶垂向弯曲 (f) 弯扭组合 2 6 Hz 2 2 /Hz 1 13. 797 2 14. 978 3 17. 582 4 27. 414 5 34. 389 6 36. 691 7 53. 648 8 55. 982 9 59. 389 2 Adams /Car 35. mnf ADAMS interface part communacations 35 3 4
3 65 3 4 3 3 3. 1 柔性 -1 刚性 1 5 7-3 -4-5 -6 1 2 3 4 5 6 7. 5 s 8 9 1 5 加速度 /(m s ).5 -.5-1. -1.5..5 1 2 3 4 5 6 7 8 9 1 6 7 长度 /m 8 6 4 2 1 2 3 4 5 6 7 8 9 1 3. 2 8 柔性 6 刚性 4 2D 2 12. 5 s. 4g -4 8 1 1 2 3 4 5 6 7 8 9 1 8
66 31 1..5 -.5-1. -1.5..5 1 2 3 4 5 6 7 8 9 1 6 4 2 1 2 3 4 5 6 7 8 9 1 9 1 3. 3 柔性 刚性 S -4 6 km /h -6 1 5 s -8 1 2 3 4 5 6 7 8 9 1 11 13 长度 /m 11 1 5-5 加速度 /(m s ) 2 1-1 -1 1 2 3 4 5 6 7 8 9 1 1 2 3 4 5 6 7 8 9 1 12 13 6 s 4 A B 2 km /h 4 km /h 6 km /h 8 km /h 3 B
3 67 3 B / km h - 1 / m s - 2 / m s - 2 / m s - 2 / m s - 2 2 4 6 8. 15 8. 47 5. 252 1. 261 6. 38 5. 46 6. 223 6. 239 1. 76 5. 49 6. 286 4. 313 6. 66 1. 44 2. 263 1. 285 6. 183 2. 65 1. 487 5. 558 3. 194 2. 96 3. 58 6. 592 2. 297 9. 68 6. 65 2. 741 2. 32 5. 99 2. 686 3. 691 6 14 16 B a/(m s ).7 纵向.6 横向.5 垂向.4.3.2.1 2 3 4 5 6 7 8 v/(km h -1 ) a/(m s ).7.6.5 纵向横向垂向.4.3.2.1 2 3 4 5 6 7 8 v/(km h -1 ) a/(m s ) 1..8.6.4.2 2 3 4 5 6 7 8 v/(km h -1 ) 14 15 4 16 A / km h - 1 / m s - 2 / m s - 2 / m s - 2 / m s - 2 2 4 6 8. 16 5. 34 5. 234 1. 24 1. 43 9. 32 2. 25 2. 218 9. 92 6. 132 9. 67 3. 75 5. 55 5. 152 1. 219 8. 315 7. 159 4. 78 3. 416 9. 235 6. 126 3. 43 9. 335 4. 157 5. 273 1. 92 3. 584 5. 54 5. 225 5. 69 6. 411 9. 528 1 2 4 km /h. 315 4 km /h. 315 3 8 km /h 4
68 31 5 1. J. 28 24 1 152-156. 2. J. 22 21 1 86-88. 3. J. 27 28 4 68-7. 4. M. 2. 5. D. 211. 6. D. 21. 7 Huh H Kim K P Kim H S. Collapse simulation of tubular structures using a finite element limit analysis approach and shell elements J. International Journal of Mechanical Sciences 21 43 9 2171187. 8. D. 27. 9. D. 214. 1. D. 21. 11. D. 214. Analysis of Frame Flexibility on Handling Stability and Riding Comfort of Heavy-duty Truck Huang Yuting 1 Li Shaohua 1 2 Yang Shaopu 1 2 Zhang Bing 1 1. School of Mechanical Engineering Shijiazhuang Tiedao University Shijiazhuang 543 China 2. Key Laboratory of Traffic Safety and Control in Hebei Province Shijiazhuang 543 China Abstract Taking the Water-shave truck as the research object the ANSYS and ADAMS were used to establish the vehicle multi-rigid-body model and the rigid-flexible coupling model with a flexible frame. The steering stability and riding comfort of the two vehicle models under different working conditions were compared and analyzed on the basis of validating the correctness of the rigid-flexible coupled model of the virtual prototype. The results show that the larger the flexible of frame is the lower the inherent frequency is otherwise the inherent frequency is higher. Flexibility of the frame has little effect on the vehicle steering stability but it has great influence on the riding comfort. The higher the speed is the worse the riding comfort is. When the road is rougher the total weighted acceleration value is larger and the riding comfort is worse. The riding comfort of the vehicle can be effectively improved by appropriately increasing the frame rigidity. Therefore this method can provide theoretical data for frame design of motor vehicle. Key words flexible frame modal analysis coupling model dynamics simulation