Forces in Product Structures
Definition
Structural System
The parts of a product that resist loads, such as the shell, framework, or solid structure, helping it maintain strength and stability.
Types of Forces Acting on Structures
Tension
Definition
Tension (force)
A pulling or stretching force that acts to extend a material.
Compression
Definition
Compression (force)
A force that squeezes a material or causes it to shorten.
Shear
Definition
Shear (force)
Two equal and opposite forces acting on an object that are not aligned, creating a cutting effect.
Torsion
Definition
Torsion (force)
A twisting force.
Bending
Definition
Bending (force)
A force that causes a material to curve, involving both tension (on one side) and compression (on the opposite side).
Note
Understanding these forces is crucial for analyzing how products withstand stress and maintain their integrity.
Strengthening Existing Structures
- Ribs and Fillets: Add internal ridges or curves to distribute force.
- Triangulation: Use triangular shapes to prevent distortion (common in trusses and bike frames).
- Bracing and Cross-Beams: Add angled supports to resist bending or twisting.
- Folded or Corrugated Surfaces: Used in cardboard, sheet metal, etc. for increased strength.
- Material Choice: Select materials with suitable strength-to-weight ratios.
Common Mistake
- Don't assume that adding more material always strengthens a structure.
- It's essential to consider how the material is distributed and how it interacts with forces.
