SUMMARY
The discussion focuses on calculating the normal axial stress for a 16mm diameter steel bar subjected to a 25kN load. The correct formula for axial stress is derived from the equation σ = F/A, where σ represents stress, F is the force applied, and A is the cross-sectional area. The cross-sectional area for a circular bar is calculated using A = π(d/2)², leading to an area of approximately 201.06 mm² for a 16mm diameter bar. Thus, the normal axial stress is calculated as 25,000 N / 201.06 mm², resulting in approximately 124.1 MPa.
PREREQUISITES
- Understanding of axial stress and its formula (σ = F/A)
- Knowledge of cross-sectional area calculations for circular shapes
- Familiarity with unit conversions, particularly between kN and N
- Basic principles of mechanics of materials
NEXT STEPS
- Study the calculation of cross-sectional areas for different shapes, including circles and rectangles
- Learn about the properties of materials under stress, including yield strength and tensile strength
- Explore the concept of stress concentration and its implications in structural engineering
- Investigate the use of software tools for stress analysis, such as ANSYS or SolidWorks
USEFUL FOR
Mechanical engineers, structural engineers, and students studying mechanics of materials will benefit from this discussion, particularly those interested in stress analysis and material properties under load.