Mechanical Engineering - Solid Mechanics                                 Home : www.sharetechnote.com

 

 

 

 

Stress and Strain

 

 

< Stress >

 

Stress is the intensity of force over an area and it can be categorized as shear stress and tensile stress

 

Shear stress: Applied force is parallel to the cross-section of the object

Equation:                       

 

 

Tensile stress: Applied force is perpendicular to the cross-section of the object

Equation:                     

 

 

< Strain >

 

  • Strain is quantified as change in length over initial length
  • Strain can be induced by both applied force and change in temperature

 

 

< Stress and strain relationship and application >

 

  • Stress-strain curve is used to analyze the deformation characteristics of a material under applied force straining of the object induce stress: refer to the next slide for the curve
  • Stress in a support system is calculated based on strain characteristics of the rigid body