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  • Users: Darkmann
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  1. Darkmann

    Need Help Modeling Belleville Washer in FEMAP

    It looks like the only option I have is to use DOF Springs. I created a dimensionless load vs displacement function and applied to the DOF Spring. Then between End A and End B, I apply 3 of these DOF Spring elements, each representing stiffness in the three coordinate directions. Is this the...
  2. Darkmann

    Shock Response Analysis

    I have a time history for a system that was subjected to some kind of shock load. The data was acquired using a triaxial accelerometer. The problem is to use this data and predict the magnitude of the input shock. Shock spectrum analysis has been suggested but I doubt that'll tell me what I...
  3. Darkmann

    How do I Determine Input G-Loading Given Accelerometer Shock Response

    I have shock response data (time) from a triaxial accelerometer. The task is to determine the shock load that the structure sees, using this response. I have the sampling rate and acelerometer specs. How do I begin to answer this question. I can reasonable assume that the system is a 1DOF...
  4. Darkmann

    Effect of Externally Applied Loads on Bolt Preload

    I'm new at joint design and have a question about bolt preload. The FEA model of the fastener is a simple 2-noded bar from which I extract axial loads and bending moments. I then apply these loads to a known fastener to characterize its strength. Here's my question: is the effective tension...

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