Broken | Call does not work. Unable to calculate the 2D orthotropic engineering constants from a 2D anisotropic material. No resolution has been found for this issue. |
Original Description Information: | ||
(s11, s12, s22, div_tol, e11, e22, v12) | ||
Description: | ||
Given the 2d, orthotropic elements of the reduced ( plane stress or 2d ) stiffness matrix, calculates the 2d engineering constants. The in plane shear modulus is not included since there is a one to one relationship between it and Stiff33 ( in ( 11, 22, 12 ) matrix form ). Jones “Mechanics of Composite Materials” ( 1975 ) page 38. | ||
Input: | ||
REAL | s11 | The 11 element of the plane stress stiffness matrix. |
REAL | s12 | The 12 element of the plane stress stiffness matrix. Synonymous to s21. |
REAL | s22 | The 22 element of the plane stress stiffness matrix. |
REAL | div_tol | The division tolerance. |
Output: | ||
REAL | e11 | The elastic modulus in the 11 direction. |
REAL | e22 | The elastic modulus in the 22 direction. |
REAL | v12 | The in plane poisson ratio. Not generally equal to v21. |
Error Conditions: | ||
None. | ||
Remarks: | ||
None. | ||
Examples: | ||
None. | ||