Spring Element

- November 21, 2023 at 2:04 pm
  
  Alf
  Subscriber
  
  I am trying to create a spring element in LSDYNA for a mass spring system. I have done this using a discrete element but I was wondering if there is a way to create the spring without using a discrete element. The reason being I am doing a study on stiffness damping (*DAMPING_PART_STIFFNESS) on a 1DOF system but this card cannot be applied to a discrete element.
- November 27, 2023 at 7:10 am
  
  Ushnish Basu
  Ansys Employee
  
  You can use a type 6 beam element, i.e. discrete beam element. Doing a google search for "ls dyna discrete beam" will get you to several online notes on how to use these elements.
  - November 27, 2023 at 1:27 pm
    
    Alf
    Subscriber
    
    I specifically cannot use a discrete element, whether that be a spring or a beam. I am wondering if there is a way to do it without using a discrete element.
- November 28, 2023 at 7:07 pm
  
  Tonmoy
  Subscriber
  
  Hi Alf!
  Do you want to model a SDOF system with Dyna? In that case, I’d turn to a single Hughes-Liu Beam element (type 1) and modify my properties to match it up with the stiffness of the spring and place the proper boundary condition.
  With the mass, stiffness, and damping parameters now known, you’re all set to conduct your study as you’d like.
  – Tonmoy.