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Modal Assurance Criterion

version 1.0.0 (1.46 KB) by Benjamin Bondsman
Modal Assurance Criterion Matrix


Updated 25 Dec 2019

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This function calculates the Modal Assurance Criterion Matrix.
Input: Modal shapes
Output: MAC Matrix

Modal shapes can be determined manually through the following steps:
Step 1: Derive the equation of motion for the whole system.
Step 2: Solve the Eigen value problem det[K-w^2M]=0
Step 3: Plug-in the value of w*2 (Natural frequency) into [K-w^2M]*phi=0

The modal shapes are normally obtained using sensors and computer programs therefore in such a case, they only need to be loaded.

Cite As

Benjamin Bondsman (2020). Modal Assurance Criterion (, MATLAB Central File Exchange. Retrieved .

Comments and Ratings (3)

MATLAB Release Compatibility
Created with R2019b
Compatible with any release
Platform Compatibility
Windows macOS Linux