| Symbol | Meaning |
|---|---|
| t | Thickness of a layer [mm] |
| d | Total structure thickness [mm] |
| β | Orthotropic direction [°] |
| E | Young's modulus [N/mm²] |
| Ex | Young's modulus in x-direction [N/mm²] |
| Ey | Young's modulus in y-direction [N/mm²] |
| G | Shear modulus [N/mm²] |
| Gxy | Shear modulus in xy direction [N/mm²] |
| Gxz | Shear modulus in xz direction [N/mm²] |
| Gyz | Shear modulus in 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 x-direction [N/mm²] |
| τxy | Shear stress in the plane of the pane (failure mode 1) [N/mm²] |
| τnet | Shear stress in the net section (x- and y-direction) (failure mode 2) |
| Determine τttr | 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 x-direction [N/mm²] |
| fm,90,k | Characteristic flexural strength in y-direction [N/mm²] |
| ft,0,k | Characteristic tensile strength in x-direction [N/mm²] |
| ft,90,k | Characteristic tensile strength in y-direction [N/mm²] |
| fc,0,k | Characteristic compressive strength in x-direction [N/mm²] |
| fc,90,k | Characteristic compressive strength in y-direction [N/mm²] |
| fxz,k | Characteristic shear strength [N/mm²] |
| fxy,k | Characteristic shear strength (failure mode 1) [N/mm²] |
| fv,net,k | Characteristic shear strength (failure mode 2) [N/mm²] |
| fyz,k | Characteristic rolling shear strength [N/mm²] |
Symbols
Parent section