TFS · Supporting topics · Problem 10PDFSolution in PDF ↓
TFS · Supporting topics · Problem 10
Problem & Solution
Video Synthesis
- Problem: The handle of a large manual valve is secured with a square bolt pattern as shown.
- Key values: 18 in, 0.03 in
- Result: So we're going to have more force and therefore more shear stress at C and D than we do at A and B.
- ✅ Answer: B
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Student questions asked in live office hours about this problem
OH 61
Q: If a force is applied at an angle pointing toward the center of a bolt pattern instead of perpendicular to the handle, would the same process apply for finding the bolt with the greatest shear?
A: Let me recap the original problem first where the force is applied perpendicular to the handle. The bolts must counteract both the applied force (equally distributed as F/4 per bolt) and the applied moment, which creates a tangential shear force perpendicular to the line through the center. The shear is a reaction force opposing this moment, and we can extend this logic to other force directions.