Materials Research Society of Korea Mechatronics Laboratory
Geongsang National University Moon Won Ki
Performance appraisal of the truck where leaf spring and the independent suspension system is affixed
Optimization of Dynamic Characteristics of Heavy Truck
Materials Research Society of Korea Mechatronics Laboratory
Geongsang National University Moon Won Ki
Topic Overview
• What is Independent Suspension system?
• Why Independent suspension system?
• strength and weakness
• Example
• Goals
• ADAMS
Materials Research Society of Korea Mechatronics Laboratory
Geongsang National University Moon Won Ki
What is Independent Suspension system?
• The type where each wheel of the automobile is affixed independently in the frame
Macpherson Wishbone
Materials Research Society of Korea Mechatronics Laboratory
Geongsang National University Moon Won Ki
Rigid axle and independent suspension axle comparison
Independent suspension axle○ expensive○ Structure is complicate ○ It is suitable with special use
Rigid axle○ cheep○ It operates a pavement○ Non-packing, rough road and special objective incongruence
Materials Research Society of Korea Mechatronics Laboratory
Geongsang National University Moon Won Ki
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
Materials Research Society of Korea Mechatronics Laboratory
Geongsang National University Moon Won Ki
Example
Materials Research Society of Korea Mechatronics Laboratory
Geongsang National University Moon Won Ki
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
Materials Research Society of Korea Mechatronics Laboratory
Geongsang National University Moon Won Ki
ADAMS
Leaf spring
Materials Research Society of Korea Mechatronics Laboratory
Geongsang National University Moon Won Ki
ADAMS
ADAMS modeling of the front chassis suspension & steering system
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