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Wiz211

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About Wiz211

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    Newbie

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  • Country
    Germany
  • Are you University user?
    Yes
  1. Hello, Currently I am working on a structural analysis. I already meshed the model, finished the Model Checks and some Analysis (Modal, Quasi-Static and Frequency Response). But now I am stuck on the next analysis types. I need to set up a : Shock Test Amplitude: 50 g Type of Excitation: Half Sinus Pulse Duration: 10 ms Nr. of Shocks: 1 (in all + - directions) Sinus Vibration Amplitude: 4.5 g Type of Excitation: Sinus Frequency: 0 - 100 Hz I would like to know what Load Collectors, Analysis Type (Load Step) and Control Cards I Need to start the simulations. I appreciate every advise
  2. Hello, I have a problem regarding a clearance fit. I already checked the eBook "Practical Aspects of Finite Element Simulation" but could not find anything helpful. My thesis is about a structural analysis of a CubeSat satellite inside of a Deployer Case. So I have the model of the satellite and the case. In space the Deployer Case will open up and a spring inside kicks out the satellite. Former attempts to model the connection between both models failed because analysis results have been unrealistic. I used RBE2 elements (all 6 dofs constrained) on both contact surfaces and connected them with a rigid CBUSH element. I just realised how wrong that is. My new idea for a realistic clearance fit is to keep the RBE2 elements (6 dof constrained) at the case, replace the RBE2 elements on the satellite by RBE3 elements (only 1 dof constrained in normal direction) and connect them with a rigid (CBUSH). Is my new idea also false? Do you have any idea how to model a clearance fit between satellite and case according to the pictures attached?
  3. I think in analysis options you can add "-core in" to force HyperMesh to allocate more Ram for the analysis
  4. Hello, When I wanted to edit my Global Output Request - Card in the model tree I couldn't chose any SID for my acceleration output (empty list). But when I edited that Card via Setup -> Create -> Control Cards I could chose from all of my existing Sets. Why is that?
  5. @Q.Nguyen-Dai I dont have AUTOSPC in the PARAM Set-Card enabled. Also I only have one Boundary Condition (with 6 fixed dof) on a RBE3 element. So I am still having the problem.
  6. Hello, In the outputfiles of my analyses something comes across I dont understand (first two attached pictures). My supervisor recommmended to find out about that. I assume that the Grid No. is the GRID and i read that the GRID is also the Node ID. So when I check the Node ID I can't find any constraints (third picture attached). Is this report message important? What is the solution if it is problematic?
  7. Hello, I am new to HyperMesh2017.2 and use it for academic purposes. Sometimes by accident i downsize the Software window and on the Right side a Little bit is cut off. So now is the time when i cant see the Radio Buttons for geom, 1D, 2D, 3D. Even the green Buttons for create, mesh or update are completely cut off. At this Moment I am not able to continue working on my Project. I also tried extending the user interface across 2 Desktop screens but the Buttons are still cut off. Thank you for any advices.
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