International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar -2017
p-ISSN: 2395-0072
www.irjet.net
Comparative Theoretical Design of Leaf Spring and V-Shape Spring to Improved Suspension with Part Loading Pradosh Chaudhari1, Kulbhushan Hatote2, Sachin Dhengle3, Rahul Bothe4, Abhijeet Shirude5 1B.E. Student, Mechanical Department, G. H. Raisoni
College of Engineering, Ahmednagar, India College of Engineering, Ahmednagar, India 3B.E. Student, Mechanical Department, G. H. Raisoni College of Engineering, Ahmednagar, India 4B.E. Student, Mechanical Department, G. H. Raisoni College of Engineering, Ahmednagar, India 5Asst. Professor, Mechanical Department, G. H. Raisoni College of Engineering, Ahmednagar, India 2B.E. Student, Mechanical Department, G. H. Raisoni
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Abstract - Suspension system is one of the important
introduction of new mechanism of progressive rate spring i.e. V- shape strip spring. A comparative numerical analysis is shown between leaf spring and V-shape strip spring for part or medium loading condition.
parameter in vehicle. It provides safety comfort to the passengers and also protect the vehicle from wear and damage. Up till now most of study done on improving working ability of suspension system on leaf spring but no such a type of work done on agricultural trolley. So, in this work rigid joint of agricultural trolley is to be replaced with flexible joint (Vshape spring) for suspension system. Theoretical calculations shows that the V-spring has more deflection and more bending stresses than leaf spring. But V-spring is only applicable for medium load conditions like agricultural trolley, mini ambulance etc.
1.1 Role of Suspension System The role of suspension system in vehicles is as follows: 1. It support the weight of vehicle. 2. Provides smooth riding for the driver and passengers i.e. acts as cushion. 3. Protect the vehicle from damage and wear. 4. It also keeps the wheels pressed firmly to the ground for traction. 5. It isolates the body from road shocks and vibrations which would otherwise be transferred to the passengers load.
Key Words: Suspension system, safety comfort, rigid joint, Flexible joint, V- shape spring, Deflection
1. INTRODUCTION
1.2 Working of Suspension System
Suspension system is more important system in an automobile. It makes the interface between the vehicle chassis and the vehicle body, and it’s functions is to provide the better drive ability such as handling ability, stability, comfort to passengers and so forth. Hence the total optimization of such system requires much of design calculation and analysis of such system, a four-link suspension system is principally a parallel six-bar universal linkage, is mainly used to high grade passenger cars. Such complicated system make design more complicated. So it is not easy to design such complicated suspension system. This leads the necessity of a new generation of design methodology which have easy calculation and analysis better working than previous system. There is necessity to find design method for finding optimization possibilities with in initially established system structure, system configuration and its optimization. The Automobile industry show the less interest for replacement of steel leaf spring with that of progressive work rate spring, which has good part loading and max to max shock absorption properties. So
Š 2017, IRJET
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Impact Factor value: 5.181
No one road is perfectly flat i.e. it has irregularities like speck and rests. Even a freshly build highway has some amount of imperfections that can be interact with vehicle and wheels. These imperfections apply forces on wheels when vehicle is in motion. According to Newton law of motion all forces have both magnitude and direction. A bump in the road causes the wheel to move up and down up perpendicular to the chassis, vehicle body and road surface. The magnitude of this forces depends on whether the wheel is striking a giant bump or a tiny speck. Thus, the wheel experiences a vertical acceleration as it passes over an imperfection to the suspension system. In suspension system spring is used this spring absorb the energy of this forces and releases slowly when spring regain its original shape.
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