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A crack is a type of fracture that separates a solid body into two or more pieces under the action of stress. There are three types modes of failure, the forces are perpendicular to the crack, the forces are parallel to the crack, the crack is in front back direction, the forces are pulling left and right. In homogeneous material systems, damage almost always involves cracks. From dynamics and fracture mechanics, it is well known that accelerated crack nucleation and micro crack formation in components can occur due to various reasons, such as transient load swings, higher than expected intermittent loads or defective component materials. Structural systems may be composed of homogeneous and heterogeneous materials such as composites, plastics, ceramics, fabrics and metal - alloys. The objective of this paper is to investigate how a crack propagates and grows in a clutch. The finite element program ANSYS is used to simulate crack growth and to compute the stresses and the stress-intensity factor. A Geometric model of clutch was designed in 3D by using software Pro/Engineer. Later the geometric model of the clutch converted into FEM model and gets analyzed by using ANSYS software to predict the analysis results. In this present work an attempt has been made to estimate the deflection, stresses under the subjected loads using FEA. The Von Misses stress near the crack tip was compared against the yield strength of the material. The materials of clutch considered are Aluminium alloys 7475, 6061 and composite materials S2 Glass and Kevlar. Mathematical correlations are calculated determine stress intensity factor, crack extension force, crack opening displacement. |
