Shear stress in bending member question

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SUMMARY

The discussion centers on the calculation of shear stress in bending members, specifically at a point 2m along the member. Participants highlight the importance of using correct units, emphasizing that shear stress should be expressed in MPa or N/mm² rather than kN. Additionally, a mistake in calculating the value of Q, which is crucial for determining shear stress, is pointed out. Accurate unit conversion and correct calculation of Q are essential for precise shear stress evaluation.

PREREQUISITES
  • Understanding of shear stress concepts in structural engineering
  • Familiarity with bending moment theory
  • Knowledge of the Q value calculation in shear stress equations
  • Proficiency in unit conversions, particularly in stress units
NEXT STEPS
  • Review the principles of shear stress in bending members
  • Learn about the calculation of the Q value in shear stress equations
  • Study unit conversion techniques for stress measurements
  • Explore common mistakes in structural analysis calculations
USEFUL FOR

Structural engineers, civil engineering students, and professionals involved in the analysis and design of bending members will benefit from this discussion.

DrVirz
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Hi all,

I was just wondering if someone could confirm that my answer to the below question is correct. The point where the question asks you to find the shear stress is at 2m (n). However, I don't believe this value needs to be included in the calculation anywhere?

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1.) You are incredibly careless with units in this calculation. What are the units of stress? (Hint: it's not kN.)

2.) Your calculation of the shear stress at B contains a mistake in calculating the value of Q.
 
SteamKing said:
1.) You are incredibly careless with units in this calculation. What are the units of stress? (Hint: it's not kN.)

2.) Your calculation of the shear stress at B contains a mistake in calculating the value of Q.

Oh! My bad! Been a long day.

I will adjust to MPa or N/mm^2
 

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