Topic: Manufacturing
The frictional shear stress (τ) in metal forming is expressed as (where m is friction shear factor and σ is flow stress)
- A. mσ/√3
- B. σ/(3m)
- C. σ/(m√3)
- D. √3σ/m
Answer: A. mσ/√3
Explanation: The relationship between flow stress in uniaxial tension and shear flow stress according to the Tresca friction model is given by τ = mσ/√3.