The effect of the crack length and direction on the stresses and their distribution around the crack on cylindrical shell of a composite material
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Date
2010-07
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Addis Ababa University
Abstract
Composite materials are artificially made materials used in various mechanical applications
like shells and plates. Composite materials are nowadays commonly used in the aviation
industry and marine application in the form of vessels or shells. In this work the stress and
strain distributions around the surface cracked cylindrical shell structure have been
presented by studying, the effect of the crack length and direction on stress, anisotropic
elasticity relations and stress field equations of surface crack problems in composite
materials, finally finite element method simulation is applied to investigate the stress and
strain distribution around the surface crack in a composite material cylindrical shell
structure.
Mathematical modeling and finite element simulation of the surface cracked cylindrical
shell was performed and the problem was finally solved using ANSYS finite element
method package.
In general, the maximum Von Misses stress at the crack tip generally increase as crack
length increase and the internal axial crack orientation has shown the maximum critical von
Misses stress distribution around the surface crack because of the nature of curved
geometry of the shell structure and the far field tangentially applied stress tries to open the
surface crack.
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Mechanical Engineering