Additional Member Results

The Additional Member Results category in the navigator allows you to display the mode shapes of members and member sets graphically. The mode shapes are not shown in the tables.

Mode Shape Display in Timber Design

Mode Shapes

If the eigenvalue method is used as the determination type for the elastic Critical moment to determine the critical moment M_cr or the critical load factor α_crit for the lateral-torsional buckling analysis, the corresponding mode shape is also available graphically as a result.

The mode shapes can be displayed based on various related criteria:

• By Selected Design Check

The mode shape is displayed specifically for the design selected in the result table. In this case, the design always refers to a member or member set. The mode shape of this object for the load case used in the specific design is displayed in the work window. This option is suitable for the targeted review of a specific design check.

• By Governing Design Check

The mode shapes that are governing for the stability analysis are displayed for all objects. Thus, multiple mode shapes are shown side by side in the graph, even though they may occur independently of each other or be based on different load situations. This option is particularly suitable in conjunction with visibility settings for documenting the results when the mode shapes of the visible objects are displayed.

• By Individual CO

The mode shapes applicable to a specific load combination are displayed for all objects—regardless of whether this load combination is governing for the design check. Select the load combination from the list of loads in the toolbar. This option is suitable for checking the plausibility of the specified boundary conditions and nodal support.

Scaling Mode Shapes

In the lower navigator section, you can select how the dimensionless numerical values of the mode shapes are to be scaled to the reference length 1. This method is also referred to as "normalization".

• |u| = 1

The value of the mode shape vector is scaled to 1. The maximum total displacement |u| is considered here.

In the lower navigator section, you can select how the dimensionless numerical values of the mode shapes should be scaled to a reference length of 1. This method is also referred to as “standardization.”

• |u| = 1

The value of the mode shape vector is scaled to 1. The maximum total displacement |u| is taken into account.

• max {u_X; u_Y; u_Z; φ_X; φ_Y; φ_Z} = 1

This approach takes into account the entire eigenvector, including the rotational components. The maximum value is sought as a reference, and this component is then set to 1.