Specialist durability load events

When analyzing the fatigue life of a component that is subjected to repetitive loading conditions, the load histories and the finite element results are the essential inputs. Specialist durability provides the following commands for creating different types of load events based on the measured or simulated load histories and the finite element results:

Block load event

Lets you create a simple load event by defining the pattern and the scale values of the load history that is assigned to the finite element results.

Create a block load event when the stress/strain time history repeats itself.

Superposition load event

Lets you create a superposition load event that represents the combination of the finite element results and load history data in a user defined way.

Create a superposition event when a linear superposition of the measured or simulated load histories with finite element results is required.

Transient load event

Lets you create a transient load event based on the transient stress/strain time history that you imported from a transient solution.

Create a transient load event when the stress/strain transient time history is explicitly defined and no load history exists.

Flexible body load event

Lets you create a flexible body load event when you have a motion simulation file to query the stress/strain time history.

Random load event

Lets you create a random load event based on a random excitation.

Create a random load event when the load signal is a random excitation in frequency domain described by power spectral densities and cross correlations.

Harmonic load event

Lets you create a harmonic load event based on a sine excitation.

Create a harmonic load event when the load signal is a deterministic excitation in frequency domain described by a sine wave.

Note:

You create a random or harmonic load event when the load is known in frequency domain, but not in time domain. For example, you can use these vibration load events to:

• Perform durability analysis of wind turbines or oil platforms where measuring the load in time domain could take years.

• Simulate the test on a shaker table where the load is described as a power spectral density (PSD) function.

Temperature load

You can apply a temperature load to the finite element model while defining a load event. The solver computes each stress value from the load event at the specified temperature, and performs the durability analysis with respect to temperature dependent material data.

Duty cycle

Lets you combine different load events and generate a single duty cycle load event.

Using the Manage Events command, you can create, copy, edit, and delete the specialist durability load events.

How do I

Create a temperature source load for part of the model

Create a temperature source load for the entire model

Automatically create a duty cycle load event

Create a random data source

Create a vibration input

Create a random load event

Create a harmonic data source

Create a harmonic load event

Learn more

Supported solution types for load events

Creating a temperature source load

Creating a block load event

Creating a superposition event

Creating a transient event

Creating a flexible body event

Creating a duty cycle load event

Automatically creating a duty cycle load event

Creating a random load event

Creating a harmonic load event

Managing specialist durability load events

Look up more details

Modal basis in vibration load events definition

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

Specialist durability load events, Simcenter 3D 2021.1 Series

© 2020 Siemens

window.mainLanguage="en_US"

window.delivId=""

window.projectId=""

MathJax.Hub.Config({ TeX: { extensions: ["autoload-all.js"] }, tex2jax: { displayMath: [ ] }, "SVG": { scale: 125 } });