Deflection vs Displacement

- May 24, 2018 at 11:33 am
  
  babu1234
  Subscriber
  
  I am solving my project under ANSYS Static structural. I wish to understand the difference between deflection and displacment? Both are same?
- May 24, 2018 at 4:04 pm
  
  peteroznewman
  Subscriber
  
  Displacement is the word used for the distance a face or edge is moved in a boundary condition.
  
  Deformation is the word used to measure the distance any node moved due to an applied load.
  
  Large Deflection is the word used in Analysis settings to indicate that nodes might move by large distances and so the solver should update the node locations during a nonlinear solution.
- June 22, 2018 at 2:38 am
  
  Sandeep Medikonda
  Ansys Employee
  
  In general, based on what I understand,
  
  1. Displacement is a vector quantity used to measure the position of a body due to external actions both rotational or translational applied to it.
  
  2. Deflection is a scalar quantity used to measure the change in shape of a body due to rotational forces only (Moment/torsion).