ques3

- September 5, 2024 at 7:30 pm
  
  24M1667
  Subscriber
  
  ! Define parameters
  *SET, M1, 1.0 ! Mass 1
  *SET, M2, 1.0 ! Mass 2
  *SET, M3, 1.0 ! Mass 3
  *SET, M4, 1.0 ! Mass 4
  *SET, K1, 10.0 ! Spring constant 1
  *SET, K2, 10.0 ! Spring constant 2
  *SET, K3, 10.0 ! Spring constant 3
  *SET, K4, 10.0 ! Spring constant 4
  *SET, C, 0.5 ! Damping coefficient
  
  ! Define the model
  /FILNAME, FourMassSystem, 1
  /PREP7
  
  ! Create nodes
  N, 1, 0, 0
  N, 2, 1, 0
  N, 3, 2, 0
  N, 4, 3, 0
  
  ! Create elements (Spring elements)
  ET, 1, LINK180
  R, 1, K1
  R, 2, K2
  R, 3, K3
  R, 4, K4
  KEYOPT, 1, 1, 1
  KEYOPT, 2, 1, 1
  KEYOPT, 3, 1, 1
  KEYOPT, 4, 1, 1
  
  ! Define element connectivity
  E, 1, 2
  E, 2, 3
  E, 3, 4
  
  ! Define mass and damping
  MP, EX, 1, K1
  MP, EX, 2, K2
  MP, EX, 3, K3
  MP, EX, 4, K4
  MP, D, 1, C
  
  ! Define boundary conditions
  D, 1, ALL, 0
  D, 4, ALL, 0
  
  ! Apply loads (forces)
  F, 2, FX, F0 * SIN(omega * t)
  F, 3, FX, F0 * COS(omega * t)
  
  ! Solution
  /SOLU
  ANTYPE, 4
  SOLVE
  
  ! Post-processing
  /POST1
  PLDISP, 2
- September 9, 2024 at 3:12 pm
  
  mrife
  Ansys Employee
  
  @24M1667
  There is no question posted here....but if I had to guess an answer it is that Link180 does not use real constants to define the stiffess. It uses sections.
  Mike