Buckling and Stress demonstration tool

Description

This model was created to showcase geometric buckling and stress (i.e. torsion, tension, and compression). The model is made out of super cushioning polyurethane foam and the grid lines are drawn on using a paint marker. The polyurethane foam is soft and cushiony which allows for easy twisting and bending. The grid lines allow the user to visualize the deformation of an object under different forces.

Definitions/Engineering Topic Covered

Structural components will deform as a reaction to the applied forces. A few geometric deformations seen in these components are buckling, tension, and compression. Buckling is the geometric deformation of a component when forces are applied along its axis. Tension and compression are geometric deformations of a component when forces are applied perpendicular to its axis.

Learning Objective

1. Students will be able to visualize the deformation of an object under different forces

Application

1. Twist the foam to demonstrate torsion

2. Apply force perpendicular to the foam to demonstrate tension and compression (bending)

3. Apply force along the axis of the foam to demonstrate buckling

4. Notice how the grid lines change as forces are applied