Strain in Different Directions: Understanding Tensile Forces on Cubes

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SUMMARY

The discussion centers on the understanding of tensile forces applied to a cube and their effects on strain in different directions. The correct formula for strain in the x direction is confirmed as εx = σx / E, where σx represents the normal stress in the x direction and E is the modulus of elasticity. The participant expresses frustration with the textbook used, citing multiple typos in the equations presented, which undermines the learning process. This highlights the importance of using accurate resources for studying material properties and mechanics.

PREREQUISITES
  • Understanding of tensile forces and their effects on materials
  • Familiarity with stress-strain relationships in materials science
  • Knowledge of the modulus of elasticity (E)
  • Basic principles of mechanics of materials
NEXT STEPS
  • Study the derivation and application of the stress-strain relationship in materials
  • Learn about the effects of tensile forces on different geometries
  • Explore the concept of Poisson's ratio and its relevance to strain
  • Review reliable textbooks or resources on mechanics of materials for accurate equations
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Students in engineering and materials science, educators teaching mechanics of materials, and professionals involved in structural analysis and design.

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Homework Statement


the tensile force is applied at x direction to the cube , the cube will decrease in size in y and z direction , right ?
according to notes,
the strain in x direction εx = σxy/ E , where σy = normal stress in y direction , [/B]

Homework Equations

The Attempt at a Solution


Which is correct ? I think the εx = σx / E make sense , so i think it's correct , because the force is applied in x direction .
Correct me if i am wrong
 

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Get rid of this horrible book. There are typos in 2 out of the 3 equations it presents on just this single page. I will no longer answer any questions about the information in this book.
 

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