Home
Setup Analysis
Set up your model for analysis.
Materials
Use the Material tool to associate predefined or user-generated materials with the model's parts and sets.
Edit Surface Finish and Treatment
Choose a surface finish and surface treatment method or input a user-defined value.

Welcome
What's New
View new features for HyperLife 2024.1.
Get Started
Learn the basics and discover the workspace.
Tutorials
Discover HyperLife functionality with interactive tutorials.
Fatigue Analysis Overview
Fatigue Analysis is intended for solutions to structures in a large number of loading cycles.
Setup Analysis
Set up your model for analysis.
- Fatigue Modules
  Use the fatigue tools to determine the type of fatigue analysis that the model will undergo.
- Materials
  Use the Material tool to associate predefined or user-generated materials with the model's parts and sets.
  - Assign Materials to Parts
    Assign pre-existing or user-generated materials to the model's parts, components, and element/node sets.
  - Create Materials
    Create new materials and define their properties.
  - Edit FKM Mean Stress Correction
    This feature allows you to edit the four slopes of the Haigh diagram.
  - Edit Surface Finish and Treatment
    Choose a surface finish and surface treatment method or input a user-defined value.
  - Edit Temperature Factor
    Select a temperature factor and define its properties.
  - Delete Materials
    Remove materials that you have created.
  - Import and Export Material Databases
    Save or load a list of created materials.
  - Exclude Sets from Fatigue Calculation
    In addition to assigning sets, you can also specify which sets to exclude from the fatigue calculation.
- Load Maps
  Use the Load Map tool to import/create multiple channels (load histories) which are then paired with subcases/loadsteps to create the fatigue events.
Evaluate
Run the model and view results.
Manage Files and Data
Create, open, import, and save models.
Additional Post-Processing Options
Explore additional post-processing options related to the input result files.
Verification Problems
Explore verification problems for SN and EN with time series loading.

Edit Surface Finish and Treatment

Choose a surface finish and surface treatment method or input a user-defined value.

The surface finish and treatment icons are enabled when performing SN (uniaxial, multiaxial) and EN (uniaxial, multiaxial) fatigue analysis.

Click the Material tool.

Figure 1.

The Assign Material dialog opens.
Under the Finish and Surf Treatment field headings, click .
Use the drop-down menu in the dialog to select a finish or treatment method.
If you select User, enter a float value between 0.1 and 1.0 for finish or 0.1 and 2.0 for surface. This value is then multiplied with the original fatigue limit and used to provide an updated limit.
Click OK.

For more information, see Surface Condition (Finish and Treatment).

Tip: Apply a Finish or Surf Treatment value to all the parts/sets by right-clicking on

and selecting Apply current value to all Parts/Sets.