FIN EC software

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Buckling

First part "Buckling check" of the window contains basic settings for the certain buckling direction. Buckling verification can be switched of with the help of "Neglect buckling" setting. It's also possible to specify different basic sector length for the calculation of buckling length.

The part "End conditions" contains several options for specifying the end conditions for buckling length calculation. The appropriate value of factor k is used according to the selected conditions. This factor multiplies the basic sector length for buckling Lx. The result of this multiplication is the buckling length lcr, that is used in the buckling analysis. These end conditions are available:

Not specified

  • The default setting of the program, factor k isn't specified, buckling length lcr isn't calculated. The analysis of buckling cannot be performed for this option.

Pinned-pinned

  • Both ends are considered as fixed. The value of factor k is equal to 1.0. The most common option for timber structures.

Pinned - fixed

  • One end is considered as pinned, another one as fixed. The value of factor k is equal to 0.7.

Fixed-fixed

  • The member is considered as fixed on the both ends. The value of factor k is considered as 0.5.

User input

  • The arbitrary value of factor k can be specified using this option. For example, the value 2.0 can be specified for cantilever.

Part "Buckling length" shows final value of buckling length. This value is used as lcr in the stability analysis. This part is described in the chapter "Buckling" of the theoretical help.

Window "Buckling Z"

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