Elastic Modulus for LRFD
(for Section Properties / Temperature Gradient analysis)
Description
Definition of the material properties for a section or beam is a three step process:
- Add the material type (concrete / reinforcing steel / etc.)
- Define a set of properties for that material type (compressive strength etc.)
- Allocate the material properties defined in 1 & 2 to the relevant parts of the section.
This form performs the second of these 3 stages for an arbitrary elastic material. The display is updated as the values in the fields are changed or beam section component.
Form Graphic
Field Help
Modulus of Elasticity
Enter the modulus of elasticity. Any value greater than zero will be accepted.
As elastic modulus, shear modulus and the Poisson's ratio are related, a change of this value will affect one of the three elasticity parameters, in this case the shear modulus.
Poisson's Ratio, ν
Enter the value for Poisson's ratio. The default value is typical for this type of material. As elastic modulus, shear modulus and the Poisson's ratio are related, a change of this value will affect one of the three elasticity parameters, in this case the shear modulus.
Shear Modulus, G
Enter the shear modulus value. As elastic modulus, shear modulus and the Poisson's ratio are related, a change of this value will affect one of the three elasticity parameters, in this case the Poisson's ratio.
Coefficient of thermal expansion
Enter the coefficient of thermal expansion for use in temperature gradient calculations.
The default value is 0.0000108 /°C as suggested in A5.4.2.2 of AASHTO LRFD 9 for normal density concrete.
The corresponding value for low density concrete is 0.000009 /°C.
Property Name
The program will supply a reference name which should provide a nearly unique identifier to the material property set. This value may be edited to give a more readily recognizable name if required.