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  1. test123123

    Representing Plate Rotation in Solid Model (ROTX/ROTY)

    Hi everyone, I'm currently working on solid plate model with FEMAP/Nastran. The goal is to observe the tip and tilt behavior of the plate (ROTX, ROTY, ROTZ). Model setup: Solid elements (e.g., HEXA elements) RBE3 connections ( 4 independent node at the plate corners) Massless...
  2. test123123

    Transient Heat Transfer with 100 Time-Dependent Data Surfaces in FEMAP

    Hello FEMAP Community, I’m working on a transient heat transfer analysis using FEMAP and NX Nastran, and I could use some guidance. My goal is to apply surface temperature distributions that change every 20 seconds over 100 time steps (totaling 2000 seconds). I’ve created 100 Data Surfaces...
  3. test123123

    The Unit Temperature Increase validity check

    Is the connection function in FEMAP not valid for thermal analysis? I wanted to verify the validity of the FEM model by setting RBE2 and all materials to the same CTE and increasing the temperature by only 1 degree to check if the stress remains zero. However, stress is still being showed in...
  4. test123123

    Example of using notching to suppress vibration

    In random vibration, notching is applied for various reasons such as excessive reaction forces or stress. In real-world, what methods are used to implement this notching? For example, is the PSD data received from external sources, such as road vibrations in a car or vibrations from external...
  5. test123123

    Structures in a Weightlessness Environment

    I am curious about the deformation that occurs when the structure I have designed is placed in a Weightlessness environment. maybe static analysis is good. In that case, what kind of forces should be applied to the structure? Would it be correct to apply a -1g gravity force in the xyz...
  6. test123123

    [FEMAP] sol111 does not run even though the frequency table exists.

    Hello. I have been practicing PSD random vibration analysis while reading Mr. Blas Molero's blog. Link With Google translator, I have no issues reading it even though it is in Spanish. Anyway,,, I would like to Random vibration analysis with PSd. I created a frequency table with the mode...
  7. test123123

    [FEMAP] How to connect a gap

    Hello. I am doing a Femap practice. I want to attach bond pads between two square metal plates. However, before that, I want to conduct a free-free analysis without the pads for model-Checking-Procedures. However, the gap between the metal plates is 0.2mm, so the sol103 for free-free...

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