INVESTIGATION ON EFFECTIVE MODULUS AND STRESS CONCENTRATION FACTOR OF 3D REINFORCED COMPOSITE BY FINITE ELEMENT ANALYSIS METHOD
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Date
2018-05-24Author
Pittu, Chandra Bhaskar Reddy
0000-0003-4739-5903
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Show full item recordAbstract
Micromechanics of Composites aims to analyze the localized stresses inside any
given constituents of the composite structure. This Thesis is focused on Calculating the
effective modulus and the Stress concentration factor of the 3D straight Fiber Composite
using Finite Element(FE). The compressive and a Shear response of a 3D Straight fiber
composite comprising three directional E Glass Fibers reinforced in an epoxy matrix is
analysed. This result is the 10% of overall Composite Ductility and a 10% of overall Shear
displacement load in the orthogonal directions. FE calculations are reported to analyse the
response of 3d reinforcement as of with the reduced fiber volume fractions in the respective
orthogonal directions. The FE calculations demonstrate that the three dimensionality of the
microstructure constrains the kinks, and this results in the stable load response. Integrated
Stresses of Constituents are formulated by FE to calculate the Effective Modulus and then
Stress concentration factor(SCF) to understand the behavior along the orthogonally varied
volume fraction models.
SCF Gives us the vital information on how concentrated the stress are in loaded
constituents when there is change in volume fraction orthogonally and would help in
predicting the failure methods and fatigue life of the material.