The latest version of CAEfatigue VIBRATION contains major feature improvements including

(click on any box below below for further information)

Spot Weld
Seam Weld

NEW FEATURE! Conduct Spot Weld and Seam Weld analysis in the Frequency Domain.

More GUI Functionality

Improved GUI with new features for viewing results with PSD Plotter, PSDM Plotter, Event Plotter and Fringe Plotter.

Improved TIME2PSD

NEW FEATURE!  Obtain even detailed Time Domain to Frequency Domain conversion using SUBEVENTs.


Determine if parts might touch (impact) each other under Dynamic Response motion.



Running Sum Technology

allows the analysis to run orders of magnitude faster then 1st generation tools.

Multi Input Loading

allows multiple, correlated input loads for real world simulation.

Easy Adoption

for users through a simple GUI or operation from a command prompt.

Multiple Output Options

provides information on response stresses, damage and fatigue life results.

Remote Installation

makes integration easier for larger companies.

Very Large Models

can be evaluated using our running sum technology.

Sine Sweep

(SINESW) enhancement now supports mixed loading units.

Material Property

can be provided in many different formats for your analysis.

Equivalent Stress Correction

provides the ability to do more accurate equivalent stress corrections.

Mean Stress Correction

provides the ability to do mean stress corrections as part of the analysis.

Plasticity Index 

is a new non-linear response statistic output.

Damage Sensitivity

curves to help optimize the design and materials used to save cost and weight.

Frequency of Response

provides the ability to see a fringe plot of frequency values at peak response.

Random Response 

provides displacement, velocity, acceleration and force output.

Event Repeats

allows you to specify repeat of loading Events for Damage Calculations.

Response Notch

allows partial removal of the Response PSD for Damage Calculations.



CAEfatigue VIBRATION is a random response post processor and a unique vibration fatigue solver. It works with mixed random and deterministic loading to provide fatigue life and damage predictions, as well as several forms of response statistics. It is exceptionally fast, easy-to-use and capable of handling very large models.

The software is sold in two different modules.

Random Response plus Full Fatigue for Single Input

The Random Response Plus Full Fatigue module is designed to provide the user with both the random response results and the fatigue results from a structure undergoing loading input from a single random PSD with or without additional loading from deterministic inputs and mean offsets.  Response outputs includes mean stress, RMS stress or strain, mean stress plus RMS stress or strain, moments, zero crossings, peaks per second and irregularity factor.  Fatigue results including damage, life and margin of safety from a single random input.

The loading inputs needed for CFV can come from Optistruct, Nastran, Ansys or Abaqus generated from (virtually) any size model.  Examples of inputs are simultaneous wide band and narrow band inputs, wide band random and swept sine inputs, wide band random and deterministic inputs, wide band and swept narrow band inputs, swept narrow band or swept sine wave.

Random Response plus Full Fatigue for Multiple Input

The CFV MULTI module offers all the output options from model CFV BASE SHAKE plus the ability to use multiple random inputs with deterministic inputs and mean offsets.  The module offers random response and S-N or E-N fatigue results generated from the multiple simultaneous correlated load inputs, with any number of DOFs, inputs, events and frequencies.