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Tensile test on composite Lamina

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M
Mohit Jha

The document summarizes a tensile test on a composite lamina to determine maximum stress and strain values and plot the stress-strain graph. The lamina has a Young's modulus of 14,000 N/mm2 and Poisson's ratio of 0.2. It will be meshed with 208 8-node linear brick elements and analyzed using static general analysis with one end fully fixed and a uniform load applied on the other end in the y-axis direction. Stress, strain, force-displacement curves and Mises stress animation results will be obtained.

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Tensile Test on Composite Lamina
Problem Description: Consider a Composite Lamina as shown in figure. Which is having Youngs Modulus 14000 N/2 and Poissons Ratio 0.2. Find the Max. Stress and Strain values and also plot the Stress-Strain Graph.
Material Properties:
Type of Analysis : Static, General
Element Type: 8-node Linear brick element (C3D8R)
The C3D8R element is a general purpose linear brick element, with reduced integration (1 integration point). Due to the reduced integration, the locking phenomena observed in the C3D8 element do not show. The element tends to be not stiff enough in bending. Stresses, strains are most accurate in the integration points. The integration point of the C3D8R element is located in the middle of the element. Small elements are required to capture a stress concentration at the boundary of a structure. Fig. 1x1x1 integration point scheme in hexahedral elements
Constraint Used:
Boundary Condition: i) All DOF fixed at lower end
Boundary Condition: ii) All DOF fixed except Y-axis direction.
Loading Condition: Uniform Load applied in Y-axis Direction.
Mesh: Global size 3.4 No. of Elements 208 No. of Nodes 530
Constraints: We considered a Reference Point.
Stress Variation:
Mises Stress Animation:
Stress-Strain Curve:
Force-Displacement Curve :

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Tensile test on composite Lamina