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  1. Kevin071586

    Modeling damping with solid elements in nonlinear FEA transient analysis

    Hi All, I'm wondering what options, other than Rayleigh damping, are available for modeling damping in nonlinear FEA (explicit transient analysis). It's easy to add damping to linear structural models (e.g., mass, stiffness, and damping matrices) by using modal damping, rayleigh damping, or...
  2. Kevin071586

    Uncertainty in transient simulations

    shaun, the main reason I can't refine the mesh further is because convergence would require an excessively large model (memory, storage, etc.). The simulation involves a drop/impact type testing on a system-level model. Components are connected with contact constraints and may experience...
  3. Kevin071586

    Uncertainty in transient simulations

    shaun, the main reason I can't refine the mesh further is because convergence would require a
  4. Kevin071586

    Uncertainty in transient simulations

    James, what I have found is that there really isn't a very good answer to this issue right now. I've asked several of the 'experts' that are around me, as well as some basic literature searches. We can take much more liberty with refining mesh in high-detail regions for static solutions; but...
  5. Kevin071586

    Uncertainty in transient simulations

    Hi All, I'm doing some work that involves calculating the transient structural response (acceleration, displacement) in a system-level model that is subject to impulsive loading. Let's assume that everything is strictly linear, small rotations for the purposes of discussion. I would like the...
  6. Kevin071586

    Poppet Pressure Relief Valve: pressure gradient and position analysis

    Hello everybody, This is my first post here, but I am looking forward to contributing more in the future. I am a recently graduated Mechanical Engineering student and I'm presently working in the aerospace industry with a PRV that I'm trying to learn a little bit more about. I'm trying to...

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