Stiffener settings

Web stiffeners are used to prevent shear buckling, which can be a design failure mode for high and slender (thin webs) profiles.

Name	Defines the name of the stiffener (set of stiffeners).

Stiffener

Material	Specifies the material used for the stiffener.
Thickness	Determines the thickness of the stiffener.
Decrease	The actual size of the stiffener can be reduced by a specified value (a millimetre or so) from each side of the stiffener to make the stiffener smoothly fit between the flanges.

Geometry

Position x	Specifies the position in X (longitudinal) direction.
Co-ordinate definition	Defines the co-ordinate system in which the position x is inputted.
Repeat	Tells how many times the stiffener is repeated.
Regularly	Tells that stiffeners are positioned regularly with the same distance between two adjacent stiffeners.
Delta x	Defines the distance between individual stiffeners. This item is available only if Repeat is greater than one.
On begin	Specifies whether the first stiffener should be applied.
On end	Specifies whether the last stiffener should be applied.

The procedure to adjust the stiffeners

1. Open service Aluminium:

1. either using tree menu function Aluminium,

2. or using menu function Tree > Aluminium.

2. Select function Beams >Stability Check Data > Stiffeners and open it.

3. Type required values and select appropriate options.

4. Confirm with [OK].

5. Select the member where the data are to be defined.

6. End the function.