VIBRA2D – An interactive MDOF System animator

Interactive educational tool for visualizing single- and multi-degree-of-freedom vibration systems using rotating vectors and mode shapes.

Overview

VIBRA2D is an interactive MATLAB program developed for educational purposes.

It visualizes vibrations in single- and multi-degree-of-freedom systems using rotating vectors, allowing users to explore mode shapes, harmonic excitations, and their superposition.

Key Features

- Create 1DOF or MDOF systems with any number of mass points

- Define harmonic excitations and set initial conditions

- Toggle excitation forces, mode shapes, and homogeneous solution on/off

- Visualize displacement, force, and rotating vectors

- Frequency Response Function visualization

- Two example models included (1DOF and 2DOF)

Installation & Usage

Add the VIBRA2D folder to the MATLAB path and run `launcher.m`.

Select a model from the dropdown menu, adjust parameters in the input table with the mouse scroll wheel, and control animation with the figure buttons.

The area in front of the Rec button can be dragged upward to view the frequency response function.

License

BSD 2-Clause License (see LICENSE.txt for details)