# SS-T: 4020 Modal Analysis, Bridge

Use modal analysis to calculate the first 3 flexible modes of a bridge assembly.

## Purpose

- Learn the SimSolid workflow.
- Create modal analysis to calculate flexible modes.

## Model Description

The model used in this tutorial is a 30-part bridge assembly.

- bridge.stl
- bridge.ssp

## Import Geometry

## Create Connections

Specify gap and penetration tolerances to create automatic connections.

## Assign Materials

## Create Modal Analysis

## Run Analysis

Solve the analysis.

- In the Project Tree, open the Analysis Workbench.
- Click (Solve).

## Calculate Flexible Modes

Calculate the first three flexible modes.