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Transactions: WSEAS TRANSACTIONS ON APPLIED AND THEORETICAL MECHANICS
Transactions ID Number: 54-193
Full Name: Javad Marzbanrad
Position: Associate Professor
Age: ON
Sex: Male
Address: Automotive Engineering Department, Iran University of Science and Technology,Tehran, Iran, 16846-13114
Country: IRAN
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E-mail address: marzban@iust.ac.ir
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Title of the Paper: Static Analysis and Fatigue Life Prediction of Steel and Composite Leaf Springs
Authors as they appear in the Paper: Javad Marzbanrad, Ashkan Saeedi Pour, Mehdi Mehdikhanlu
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Number of paper pages: 10
Abstract: . This paper describes static and fatigue analysis of leaf spring with seven layers usually is used in the automotive suspension systems. The material of steel and composite multi leaf spring made up of glass fiber reinforced polymer is investigated for life estimation prediction. The dimension of a conventional steel leaf spring of a light commercial vehicle is taken and the static simulation has been verified with experimental results. A composite multi leaf spring using E-glass/Epoxy has also fabricated for analysis with the same shape and dimensions for comparison of the load carrying capacity, stress, deflection, Factor of safety, mode shapes, stiffness, weight and cost. Finite element analysis has been utilized for modeling and analysis in three dimensional cases to derive the static and natural frequencies of the leaf spring. The fatigue life of steel and composite leaf springs is also predicted in this study. Compared to the steel spring, the composite leaf!
spring is found to have 29.99 % lesser stress, 42.45 % higher stiffness and 11.10 % higher first natural frequency than that of steel leaf spring. A weight reduction of 66.67 % is also achieved by using composite leaf spring of E-glass/Epoxy. Although the E-glass/Epoxy composite is much expensive than steel, but the results represented that the fatigue life of it is more than that of steel leaf spring.
Keywords: Multi leaf spring, E-glass/Epoxy, Frequency, Fatigue
EXTENSION of the file: .doc
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How Did you learn about congress: automotive, simulation, fatigue
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