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  1. MechEngineerNT

    Non-Linear Static Structural to Explicit Dynamic Environment (Material Properties Issue)

    Hi Guys, I'm running a Primer crimp simulation. In step one, I'm applying a displacement to a roll die and plastically deforming a crimp on a primer. From there, I want to apply a pressure trace to the internal faces of the primer to see if it holds. I've been running this simulation in the...
  2. MechEngineerNT

    Pendulum test

    Hey Guys, I'll be running a pendulum test to test gun recoil. The platform is around 100 lbs and will be supported by 2 steel bars about 8 feet long and 20lbs each. Would it be safe to ignore the weight of the metal arms because they are so long? Thanks, Alex
  3. MechEngineerNT

    Crimp Die for 45 Primer and Cartridge -- FEA non-linear Analysis not matching with Real life results

    Hey Guys, I'm running a quasi-static non-linear FEA in Ansys trying to simulate crimping a primer into the cartridge using a die crimp tool. In short, the crimping operation works in real life (80 units tested), to which I've decided to try to simulate. However, the result of the simulation...
  4. MechEngineerNT

    FEA die crimp non linear quasi static

    Hey Guys, I'm running a quasi-static non-linear FEA in Ansys trying to simulate crimping a primer into the cartridge using a die crimp tool. In short, the crimping operation works in real life (80 units tested), to which I've decided to try to simulate. However, the results of the simulation...
  5. MechEngineerNT

    Crimp Die for 45 Primer and Cartridge -- FEA non-linear Analysis not matching with Real life results

    Hey Guys, I'm running a quasi-static non-linear FEA in Ansys trying to simulate crimping a primer into the cartridge using a die crimp tool. In short, the crimping operation works in real life (80 units tested), to which I've decided to try to simulate. However, the results of the simulation...
  6. MechEngineerNT

    Measuring Pressure---Casting a composite material

    Hi All, I'm currently working on a project that involves measuring pressure of a material being cast. A test cast was designed in which threaded holes were machined in order to accommodate pressure transducers; which act as a part of the cast wall when inserted. I am interested in measuring the...
  7. MechEngineerNT

    Casting a Composite material characterization

    Hi Guys, I currently investigating a casting procedure that the company i have been working for has had a lot of issues with. So I outfitted this with pressure transducers and load cells. I applied to load cells on the top and bottom of the cast, and pressure transducers on the OD of the cast...
  8. MechEngineerNT

    Compressive Pre-Load (bolted member)

    Hello Everyone, I am setting up a test for a hydraulic press in which I need to measure the force acting upon the face of the object I am pressing so I can get a pressure reading. So what I have done is inserted a 'force load cell washer' within the press piston (2 piece) to get a force...
  9. MechEngineerNT

    Electro-deposited zinc coating on 1018 steel

    Hi All, Does anyone know of any silicon compatible rust inhibitors comparable to TT-P-1757B? I have a zinc coated 1018 Steel I need to apply this to. Preferably a mil-spec inhibitor so I know what I am using. Thank you much for all your help, MechEngineerNT
  10. MechEngineerNT

    Electroless Nickel-Phosphorus and Zinc Chromate Plating

    Hi Everyone, Bear with me, I am a Mechanical Engineer with very little materials science knowledge. I have some parts that are Electroless Nickel-Phosphorus and Zinc Chromate Plated. I could not find any ASTM or ASM specs that specify cleaning these parts AFTER they are plated, only prior to...

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