Static and Modal Analysis of Leaf Spring using FEA

ABSTRACT

           The objective of this present work is to estimate the deflection, stress and mode frequency induced in the leaf spring of a heavy truck. The emphasis in this project is on the application of computer aided analysis using finite element concept. The component chosen for analysis is a leaf spring which is an automotive component used to absorb vibrations induced during the motion of vehicle. It also acts as a structure to support vertical loading due to the weight of the vehicle and payload. Under operating conditions, the behaviour of the leaf spring complicated due to its clamping effects and interleaf contact, hence its analysis is essential to predict the displacement, mode frequency and stresses.

          This spring is intended to bear heavy jerks and vibrations reduced during real operating conditions. Appropriate boundary conditions, material properties and loads are applied selected as per intended performance. The dimensions of an existing conventional steel leaf spring of a Heavy commercial vehicle are taken Same dimensions of conventional leaf spring are used to design and material used in analysis are structural steel, AISI 1040, 65Si7 .The resultant deformation, mode frequencies and stresses obtained are analyzed.