The automobile industry has shown increased interest in the replacement of steel spring with E-Glass/Epoxy composite leaf spring due to the higher strength-to-weight ratio, superior fatigue strength and excellent corrosion resistance. In this work the composite leaf spring with the rectangular cross section designed for the commercial vehicle was analyzed by using the finite element software ABAQUS, and the experimental tests had been conducted to confirm the finite element analysis results. In the finite element analysis, the stress analysis and the spring rate computation have been conducted for the composite leaf spring subjected to the full load 15,000 N. The maximum compressive stress is 309.1 MPa at the middle of the composite leaf spring, and the safe factor can reach to 2.6 comparing with the material compressive strength of E-Glass/Epoxy 800 MPa. The spring rate computed from ABAQUS is 160 N/mm, and the maximum load capacity of the composite leaf spring is approximately 34,000 N. The measurements of the spring rate and the maximum load capacity were conducted on the composite leaf spring fabricated with the hot molding process method, and they are 157.5 N/mm and 34,280 N respectively. Comparing the results obtained from the finite element analysis with the experimental measurements, it can be seen that the errors are 1.56 % for the spring rate and 0.82 % for the maximum capacity load, and the main performances of fabricated composite leaf spring have the good agreement with the designed requirements.
The Analysis of Composite Leaf Spring by Finite Element Method and Experimental Measurements
Lect. Notes Electrical Eng.
2012-11-15
7 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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