DA11_Ye EE*th^4/(12*(1-Nu^2)*Iy) "Equivalent extensional stiffness matrix, 11-component"
DA12_Ye Nu*DA11_Ye "Equivalent extensional stiffness matrix, 12-component"
DA22_Ye EE*th*lh/(c) "Equivalent extensional stiffness matrix, 22-component"
DA33_Ye EE*th*c/(2*(1+Nu)*lh) "Equivalent extensional stiffness matrix, 33-component"
DD11_Ye EE*th^3*2*c/(12*(1-Nu^2)*2*lh) "Equivalent bending stiffness matrix, 11-component"
DD12_Ye Nu*DD11_Ye "Equivalent bending stiffness matrix, 12-component"
DD22_Ye EE*Iy "Equivalent bending stiffness matrix, 22-component"
DD33_Ye EE*th^3*lh/(24*(1+Nu)*c) "Equivalent bending stiffness matrix, 33-component"