STATIC ANALYSIS OF COMPOSITE MONO LEAF SPRING
Supriya.Koppula1, G.S.R.Sunand2 and R.Vijaya Prakash3
1Mechanical Department, Nimra College of Engineering & Technology, Nimra Nagar, Jupide, Ibrahimpatnam, Krishna Dist-521456, Andhra Pradesh, India. Email: firstname.lastname@example.org,
2Nimra College of Engineering & Technology, Nimra Nagar, Jupide, Ibrahimpatnam, Krishna Dist-521456, Andhra Pradesh, India.
The automobile industry has shown increased interest in the replacement of steel spring with fiberglass composite leaf spring due to high strength to weight ratio. The aim of this paper is to suggest the best composite material for design and fabrication of complete mono composite leaf spring. A single leaf with variable thickness and variable width for constant cross sectional area of unidirectional glass fiber reinforced plastic (GFRP) with similar mechanical and geometrical properties to the multi leaf spring, was modeled and analyzed. The results showed that the best composite the spring width decreases hyperbolically and thickness increases linearly from the spring eyes towards the axle seat. The finite element results using ANSYS software showing stresses and deflections were verified with analytical results. The design constraints were stresses and displacement. Compared to the steel spring, the composite spring has stresses and deflection that are much lower, and the spring weight is nearly 78 % lower with complete eye unit. Also the same analysis is carried out for different composite materials and compared the results for suggesting the best composite material for fabrication of composite mono leaf spring.
Key words: leaf spring; composite; bonded end joints;
International eJournal of Mathematics and Engineering
Volume 3, Issue 1, Pages: 1331 - 1337