Composite Materials |
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Given the material properties of a unidirectional lamina, this calculator constructs the stiffness matrix [C] and the compliance matrix [S] of the lamina in the principal directions. If the angle of rotation of the lamina is given (other than 0 degree), this calculator also constructs the stiffness matrix [ ![]()
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Stress-Strain Relations for Lamina for Principal Directions | ||||||||
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The stiffness matrix [C] in the principal directions is
The compliance matrix [S] in the principal direction is
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Coordinate Transformation Matrix | ||||
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The coordinate transformation matrix is
The engineering-tensor interchange matrix [R] is ![]() |
Stiffness and Compliance Matrices for Angled Lamina | ||||||||
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The stiffness matrix for a lamina of arbitry orient can be expressed in terms of the stiffness matrix in the principal direction,
The complicance matrix for a lamina of arbitry orient can be obtained in a similar manner.
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