Optimization of Dynamic Characteristics of Heavy Truck

1. Performance appraisal of the truck where leaf spring and the independent suspension system is affixed Optimization of Dynamic Characteristics of Heavy Truck

2. Topic Overview • What is Independent Suspension system? • Why Independent suspension system? • strength and weakness • Example • Goals • ADAMS

3. What is Independent Suspension system? • The type where each wheel of the automobile is affixed independently in the frame Wishbone Macpherson

4. Rigid axle and independent suspension axle comparison • Rigid axle • cheep • It operates a pavement • Non-packing, rough road and special objective incongruence • Independent suspension axle • expensive • Structure is complicate • It is suitable with special use

5. Strength and Weakness • It is used plentifully in the passenger car, the light truck and the mini van • Strength • The stability of the car is improves because the center of car doing lowly. • Lower part weight of the spring is light, so smooth ride • The vibration which to the steering wheel shakes with side direction (Shimmy) does not happen well. • The Tire and road surface ground connection characteristic get better. • Weakness • There are many connecting portion, so structure is complicated, by these attrition the wheel alignment changes. • When traveling, the tire is quickly worn away because Tread and Wheel Alignment are changed by the wheel moves up and down

6. Example

7. Goals • Modeling and Dynamic analysis of using ADAMS (Automatic Dynamic Analysis of Mechanical Systems) • It shows the efficien cy the truck which installs independent suspension system better than the truck which affixes leaf spring from dynamic test in mountain terrain

8. ADAMS Leaf spring

9. ADAMS ADAMS modeling of the front chassis suspension & steering system

10. Thank You