# FEM Loads

The following types of loads can be created in SDC Verifier:

- Wind Load;

Other FEM Loads are the loads that are read from the model and it is not possible to modify them in SDC Verifier, only change a title or a description.

FEM Load detailed information is not loaded automatically, only by request (can have an impact on project loading performance). Press Read Data to read the description.

## Wind Load

Wind Load - wind pressure (height dependent) applied to the selection. Wind can be applied to the beam, shell/plate and solid elements.

Execute Model - FEM Loads - Add - Wind from the tree to add wind:

The following parameters have to be defined:

- Vertical Direction - the height uses the vertical direction to calculate pressure for the elements (in the global rectangular coordinate system);
- Direction - wind direction. It is possible to select a global axis or define vector using Femap Vector dialog box;
- Apply Approach - Projected Area (cos(A)), Velocity Component (cos^2(A)) or Normal to Face (cos(0));

- Drag Coefficients - use Drag Coefficients from Model or those that were used in applying of current Wind Load (Stored)
Warning:

Drag Coefficients are used only for elements with cross sections. Shell and solid elements always use coefficient = 1.

- edit Stored or Model Drag Coefficients;

- import Drag Coefficients from other Wind load to current Wind Load;

Note: If to edit Stored Drag Coefficients - it is possible to recover them to the Model Drag Coefficients;

- Selection - elements to apply the wind. Selection is defined using Selector Control;
- Pressure or Velocity (including air density) - define pressure / velocity dependency from the height (user defines the direction of the vertical axis for height). Coordinates have to be in a descending order.
- Analysis - Select the analysis where Wind Load will be created:

- select steps from the selected analysis where a Wind Load will be applied. By default all streps are selected.

Press to store pressure/velocity tabular data in the library.

Press to load a profile from the library:

It is possible to check if all or selected Wind Load is applied with actual Drag Coefficients that are defined in the model or if all loaded elements exist in Selection of respective Wind Load.

## Drag Coefficients

Drag coefficients - used to quantify the drag or resistance of an object in a fluid environment. Press Set Drag Coefficient to define them in Y and Z directions:

It is possible to add coefficient for a user-defined selection or based on components/materials/properties/named selections (groups):

- preview only elements of the selected items;

- highlight all elements of the selected items;

- display a criteria plot with coefficient values of the selected items;