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A mechanic uses a crowfoot wrench to loosen a holt at E. Knowing that the mechanic applies a vertical 24-lh force at A. determine the principal stresses and the maximum shearing stress at point H located as shown on top of the -in. diameter shaft.

Question-Answer › Category: Strength of Materials › A mechanic uses a crowfoot wrench to loosen a holt at E. Knowing that the mechanic applies a vertical 24-lh force at A. determine the principal stresses and the maximum shearing stress at point H located as shown on top of the -in. diameter shaft.
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Beer Johnston asked 12 months ago

A mechanic uses a crowfoot wrench to loosen a holt at E. Knowing that the mechanic applies a vertical 24-lh force at A. determine the principal stresses and the maximum shearing stress at point H located as shown on top of the -in. diameter shaft.

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Mazurek Gravity answered 12 months ago

 

 

Step No: 1

Force applied on a wrench vertically 
Diameter of a shaft 
Equivalent force – couple system at center of shaft in section at point H
Vertical force 
Moment of shaft 


Torque 


 

Step No: 2

Shaft cross – section
Radius of the shaft 


Polar moment of inertia 


Moment of inertia 

 

Step No: 3

Torsion 



 

Step No: 4

Bending 



 

Step No: 5

Transverse shear at point H stress due to transverse shear is zero
Resultant stresses


 

Step No: 6

Average stress 

 

Step No: 7

Maximum shear stress 

 

Step No: 8

Maximum stress 


Minimum stress 


Maximum shear stress (in plane ) 

 

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