Random Base Excitation

Use the Random Base Excitation command to evaluate the dynamic response of a structure subjected to a random base acceleration power spectral density (PSD) function. This event leverages a standalone solver, which uses multithreading, as well as advanced integration and estimation algorithms for a faster solution time. It computes peak results that correspond to a desired confidence level for a number of quantities, including failure indices, strength ratios and margins of safety. It also computes PSD XY functions and the number of positive zero crossings.

Peak acceleration	Angular acceleration PSD functions

Random base excitation (RBE) testing is prevalent in the space, automotive and electronics industries.

Where do I find it?

Application	Pre/Post
Prerequisites	A Simulation file as the work part and displayed partSimcenter Nastran as the specified solverStructural as the specified analysis typeSOL 103 Response Dynamics as the specified solution type, which is solved with Simcenter Nastran 2021.1 or higher and contains valid enforced motion constraintsAn active Response Dynamics solution process
Command Finder	Random Base Excitation
Simulation Navigator	Right-click the Response Dynamics node→New Random Base Excitation Event

How do I

Create and solve a random base excitation

Learn more

Solving a random base excitation event

Look up more details

Right-click commands for Random Base Excitation nodes

Random base excitation results

Random base excitation output files

Running a random base excitation event from a command line

Random Base Excitation dialog box

Random Output Requests dialog box

Random Output Requests Manager dialog box

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

Random Base Excitation, 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 } });