FINITE ELEMENT ANALYSIS OF ALUMINIUM ALLOYS FOR THEIR VIBRATION CHARACTERISTICS

Aluminium alloys are being extensively used in many applications due to their excellent weight to strength properties. Many research works have been carried out to study and improve the mechanical properties of aluminium alloys. The composition of alloying elements plays an important role in deciding the properties of an alloy. The results of numerical methods have been accepted widely as they closely match with the experimental results. In the present study a numerical analysis tool i.e., finite element analysis (FEA) is used. The work presented in this paper is aimed at the study of effect of vibration characteristics of aluminium alloys of different compositions. The modeling and analysis is carried out using ANSYS software. A modal analysis is carried out to understand the vibration behavior i.e., natural frequency and mode shapes, of the material considered. The mode shapes and natural frequency play an important role in the design of dynamic machines. The harmonic analysis has been made to determine frequency characteristics. The analysis program reads the data from the input file processes the data and creates the output file containing the nodal displacements and nodal stress values of different stresses. From the analysis it is concluded that as the copper and silicon content in the alloys increases deformation decreases inversely. ANSYS results confirm the least deformation in case of 380 alloys. Young’s Modulus and the ultimate tensile strength of the 380 alloy