Stress strain and youngs modulus

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Homework Help Overview

The discussion revolves around the relationship between stress, strain, and Young's modulus, particularly in the context of plotting a stress versus strain graph. Participants are examining the appropriate mathematical representation of this relationship.

Discussion Character

  • Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster attempts to establish a mathematical equation relating stress and strain, questioning if their formulation aligns with the standard linear equation format. Other participants affirm the correctness of the relationship within the elastic region.

Discussion Status

There appears to be a general agreement among participants regarding the validity of the original poster's equation, particularly in the context of the elastic region of materials. Multiple affirmations suggest that the discussion is productive, focusing on confirming understanding rather than exploring alternative interpretations.

Contextual Notes

Participants are operating under the assumption that the discussion pertains specifically to the elastic region of materials, which may limit the scope of the analysis.

Luke1121
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When plotting a stress against strain graph is this the right equation that fits the form y=mx+c?
I got (F/A)=y(dL/L) where F is force A is area y is youngs modulus dL is change in length and L is original length. The Y is F/A. The m is y and x is dL/l (in y=mx) is this correct? Thank you
 
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Looks correct to me.
 
The answer is yes, if you are within the elastic region.
 
stress = strain * Young's modulus in the elastic region so that looks correct.
 

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