PSD correlation

A random event is a statistically based analysis that lets you apply one or more power spectral density (PSD) function excitations. The PSD excitations can represent a sampling of a force of which you do not know the exact magnitude. By default, the PSD functions are independent (not correlated). However, the New Correlation dialog box lets you correlate two PSD excitations using a phase angle or time delay.

Note:

You can only define correlations between the same types of excitations. For example, you can define correlations between a distributed load and another distributed load, a nodal force and a nodal force, or an enforced motion and enforced motion.

Where do I find it?

Application	Pre/Post
Prerequisites	A Simulation file as the work part and displayed partMultiple PSD excitations in a random event
Command Finder	Correlation Excitation

How do I

Convert SRS/PSD/Time functions

Import test data into Response Dynamics

Create nodal and enforced motion excitations

Create distributed load excitations

Create static excitations

Create a drop impact or constant velocity impact simulation

Calculate random RMS functions from PSD input

Using Fast RMS Fitted PSD functions

Create rotating force excitations

Correlate two PSD excitations

Create DDAM excitations

Learn more

Excitation loads

Response Dynamics Function Toolkit

Using pulse functions for shock analysis

Velocity Impact excitations

Rotating forces and unbalanced masses

Look up more details

Function requirements by excitation type

Function parameters by event type

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

PSD correlation, 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 } });