About the difference between static, transiant and dynamic analysis

- June 16, 2020 at 5:44 am
  
  Shounak123
  Subscriber
  
  In static, we can apply the time-based analysis and in dynamic as well as we can apply time-based load in Ansys so what is the main difference between this all. can the modal get changed in each of this? or not.
- June 16, 2020 at 1:52 pm
  
  Wenlong
  Ansys Employee
  
  Hi Shounak123,
  
  In Dynamic analysis, such as transient structural or explicit dynamics, we consider the equation of motion: [M]*{a}+[C]{v}+[K]{u}={F}, {a} is the acceleration, [m] is the mass matrix, [C] is the damping matrix, {v} is the velocity vector, [K] is the stiffness matrix, {u} is displacement, so there is a dynamic term [m]{a} and [c]{v}.
  
  In Static Structural analysis, we are only solving the [K]{u} = {F}. The time shown in Static analysis is pseudo-time, which means it is not real. It is only used to help describe how the force or displacement is applied, or some time-dependent material properties such as creep.
  
  Regards,
  
  Wenlong
- July 1, 2020 at 11:01 am
  
  Shounak123
  Subscriber
  
  Ok sir thank you for giving the answer