Question:
The equation of Wahl's stress factor (K) is expressed by where C is spring index:
The equation of Wahl's stress factor (K) is expressed by where C is spring index:
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Wahl's factor: \(K = \frac{4C - 1}{4C - 4} + \frac{0.615}{C}\).
Accounts for stress concentration in springs.
Accounts for stress concentration in springs.
Updated On: Aug 18, 2026
- \(\frac{4C - 1}{4C + 4} - \frac{0.615}{C}\)
- \(\frac{4C - 1}{4C - 4} + \frac{0.615}{C}\)
- \(\frac{4C + 1}{4C - 1} + \frac{0.615}{C}\)
- \(\frac{4C - 1}{4C + 1} + \frac{0.615}{C}\)
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Wahl's stress factor is used in spring design.
It accounts for curvature and direct shear.
Step 2: Key Formula or Approach:
Wahl's factor: \(K = \frac{4C - 1}{4C - 4} + \frac{0.615}{C}\).
Step 3: Detailed Explanation:
The Wahl's stress factor is given by:
\(K = \frac{4C - 1}{4C - 4} + \frac{0.615}{C}\).
Other options have incorrect signs or terms.
Thus, the correct expression is option (B).
Step 4: Final Answer:
The correct equation is \(\frac{4C - 1}{4C - 4} + \frac{0.615}{C}\).
Hence, the correct option is (B).
Wahl's stress factor is used in spring design.
It accounts for curvature and direct shear.
Step 2: Key Formula or Approach:
Wahl's factor: \(K = \frac{4C - 1}{4C - 4} + \frac{0.615}{C}\).
Step 3: Detailed Explanation:
The Wahl's stress factor is given by:
\(K = \frac{4C - 1}{4C - 4} + \frac{0.615}{C}\).
Other options have incorrect signs or terms.
Thus, the correct expression is option (B).
Step 4: Final Answer:
The correct equation is \(\frac{4C - 1}{4C - 4} + \frac{0.615}{C}\).
Hence, the correct option is (B).
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