| Symbol | Meaning |
|---|---|
| t | Layer thickness [mm] |
| d | Total structure thickness [mm] |
| β | Orthotropic direction [°] |
| E | Young's modulus [N/mm²] |
| Ex | Young's modulus in the x-direction [N/mm²] |
| Ey | Young's modulus in the y-direction [N/mm²] |
| G | Shear modulus [N/mm²] |
| Gxy | Shear modulus in the xy direction [N/mm²] |
| Gxz | Shear modulus in the xz direction [N/mm²] |
| Gyz | Shear modulus in the yz direction [N/mm²] |
| ν | Poisson's ratio |
| νxy / νyx | Transverse strain in the xy plane |
| dij | Elements of the partial stiffness matrix of each layer |
| Dij | Elements of the global stiffness matrix of the total thickness |
| σx / σy | Normal stresses in the x or y direction [N/mm²] |
| τxz | Shear stress in the x-direction [N/mm²] |
| τxy | In-plane shear stress (Failure Mode 1) [N/mm²] |
| τnet | Shear stress in the net section (x- and y-direction) (Failure Mode 2) |
| τtor | Torsional shear stresses in the intersection section (Failure Mode 3) |
| τyz | Rolling shear stresses |
| n | Number of layers |
| z | z-axis [m] |
| fm,0,k | Characteristic flexural strength in the x-direction [N/mm²] |
| fm,90,k | Characteristic flexural strength in the y-direction [N/mm²] |
| ft,0,k | Characteristic tensile strength in the x-direction [N/mm²] |
| ft,90,k | Characteristic tensile strength in the y-direction [N/mm²] |
| ffc,0,k | Characteristic compressive strength in the x-direction [N/mm²] |
| ffc,90,k | Characteristic compressive strength in the y-direction [N/mm²] |
| fxz,k | Characteristic shear strength [N/mm²] |
| fxy,k | Characteristic shear strength (Failure Mode 1) [N/mm²] |
| fy,net,k | Characteristic shear strength (Failure Mode 2) [N/mm²] |
| fyz,k | Characteristic rolling shear strength [N/mm²] |
Symbols
Parent Chapter