Trapezoidal loads dialog

Use this dialog to define how a trapezoidal load must be applied when several bars forming a chain are selected.

Access

1. Click on the Bar tab in the Load Definition dialog.
2. Set up the load parameters.
3. Select a chain of bars.

Dialog elements

Yes

Applies the load to the user-defined chain of bars, and retains the orientation of the chain represented by arrows (specifying the beginning and end of the chain).

Yes, but change orientation

Applies the load to the user-defined chain of bars, but changes the orientation of the chain represented by arrows (specifying the beginning and end of the chain).

No, apply to single bars

Applies the trapezoidal load to single bars in the chain.

During structure geometry modification assign loads to separate chain bars

Treats the selected chain of bars as separate structure bars when modifying structure bars.

If this option is cleared, modifying structure bars treats the chain of bars as one super bar. It causes the entire load to be calculated again for the new superbar geometry.

Tip: Select this option when after a load is applied, the geometry of the structure bars subjected to action of the trapezoidal load changes, or the values of the trapezoidal load at the beginning or end of a chain of bars (load values p1or p2) change.

The following image shows schematically how the During structure geometry modification assign loads to separate chain bars option works for the trapezoidal load (2p). The top image shows what happens when the option is selected; and the bottom image shows what happens when the option is cleared.