Calculating Force Needed to Distort Steel Plate

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Homework Help Overview

The discussion revolves around calculating the force required to distort the edges of a steel plate, specifically focusing on the shear modulus of steel and its application in determining stress and strain in the material.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the relationship between shear modulus, stress, and strain, with some questioning the correctness of the equations presented. There is an exploration of how to apply the shear modulus in the context of the problem.

Discussion Status

The discussion is active, with participants providing insights into the equations related to shear modulus. There is a recognition of different interpretations of the equations, but no consensus has been reached regarding the correct approach to the problem.

Contextual Notes

Participants are working with specific values for the steel plate dimensions and the shear modulus, but there may be uncertainties regarding the application of the equations and the definitions of stress and strain in this context.

samemikejones
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A steel plate of 10 cm square or (100 sq cm) is .25cm thick. How much force is need to distort its edges by 0.04 cm.
sheer modulus for steel is 80 * 10^9 n/m^2,


Plz Help Thanx
 
Last edited:
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Remember that the sheer (or shear) modulus is given by stress divided by strain.

Where Stress is Force/Area.

And Strain is the Change in Length / Original Length.

This should be enough to get you going.
 
Not sure if that equation is right, because they give you the shear modulus in the question, so I found an equation with G in it, F/A = G * Delta H/H, the other equation does not have G in it
 
If G is the shear modulus, then the equation that you have written:

F/A = G * Delta H/H,

is exactly the same as what I wrote in my last post.
 

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