The Dlubal Structural Analysis Wiki explains technical terms used in structural analysis and design. The terms are given in alphabetical order and are usually used in Dlubal Software.

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2019-01-28
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Orthotropy

Examples include fiber-reinforced plastics, trapezoidal sheets, reinforced concrete, and timber. As a rule, Hooke's material law is not valid for orthotropic materials anymore.

ν = E2 · G - 1 ≤ 0.5
Hooke's Material Law

Material Parameters

For a 2D shell element, the material parameters are as follows:

  • Ex
Stiffness in the local x-direction of the surface
  • Ey
Stiffness in the local y-direction of the surface
  • Gxz
Shear stiffness in the local x-direction of the surface
  • Gyz
Shear stiffness in the local y-direction of the surface
  • Gxy
Shear stiffness in the panel plane

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