SDC Verifier

Load Sets

Load Sets – the loads of different type acting on a structure at the same time. In SDC Verifier load sets are the combinations of Individual Loads multiplied on Factors.

To create a Load Set, execute Job - Load Sets - Add... from the main menu

The item is added with the factor 1. It is possible to edit the factors for each item in the table separately or set the factors for the selected items by pressing Set.

Safety Factor is used in the calculation according to the standards.

If the Logic option is checked, the load will obtain two factors: positive and negative. For the Individual Load with two factors two Load Sets will be created.

Example:

Parent Load Set

Load Set 1
Individual Load Factor 1 Factor 2
Wind 1 -1
Hoist    1

Child Load Sets

Load Set 1.1 Load Set 1.2
Individual Load Factor 1 Factor 2 Individual Load Factor 1 Factor 2
Wind 1   Wind   -1
Hoist   1 Hoist    1

Each of the created Load Sets will include this Individual Load with only one factor. In general, the amount of the created Load Sets will be equal to 2k, where k – the amount of Individual Loads with two factors. Second factor can be defined also manually.

Load Set concept:

LS = L1•F1 + L2•F2• +...+ Ln-1•Fn-1• + Ln•Fn

where LSLoad Set, L1 and F1Individual Load and Factor, n – the amount of Individual Loads in the Load Set.

Warning:

In the Logical Load Set is possible to edit existing factors but not allowed to add second factor to the Individual Loads.

There is a possibility to copy the items with factors from one Load Set to another. Use and .

The equivalent (Von Mises) stress is calculated by the following formula:

Create and Edit Multiple Load Sets

Create multiple Load Sets gives a possibility to create easily few Load Sets at once.

To create few Load Sets specify number of Load Sets and press .

It is possible to modify the titles of the factors in the table.

Apply factor to all selected cells:

Copy/Paste data from/to the clipboard:

Copy/Remove rows by selected cells:

- creates new Load Sets with titles from the clipboard.

Export Load Sets

It is possible to export Load Sets to the Standard Load Combination or Nastran Load Combination.

The Standard Load Combination creates the FEM Loads with combined forces from the Load Set items.

The Nastran Load Combination creates the FEM Loads which have the references to the forces from the Load Set items.

Note: Nastran Combination is updated automatically if the referenced load is updated, the Standard Combination remains the same.

To export the Load Sets, select in the context menu Export Standard/Nastran Load Combination:

Select loads to export and press OK:

Select the Load Sets to Export and press .