Stress

Definition

Stress is the internal force of a body that resists external force.

Purpose

The purpose of understanding stress is to analyze how materials and structures respond to external loads, ensuring they can withstand applied forces without failing or deforming excessively.

Examples of Use

• Engineers calculate stress in beams and columns to ensure they can support the loads applied to them.
• Material scientists study stress to develop stronger, more resilient materials.
• Structural analysis involves determining stress distributions within buildings and bridges to ensure safety and stability.

Related Terms

• Strain: The deformation or displacement of a material due to applied stress.
• Load: The external force or weight applied to a structure or material.
• Yield Strength: The stress at which a material begins to deform plastically.

Notes

Accurate stress analysis is essential for the design and construction of safe, reliable structures, guiding decisions on material selection, dimensions, and reinforcement.