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  1. dlreed

    Fatigue life of wire torsion springs

    I am looking for info and methodology on calculating fatigue life of a Inconel X750 wire torsion spring. Does anyone have some suggestions or references.
  2. dlreed

    Drivetrain analysis

    I am analyzing a drive train consisting of a motor, transfer case, driven load, and a flywheel case. The motor housing is directly coupled to the transfer case, which transfers the motor torque thru a belt to treadmill front roller, which is the load in this case. Directly coupled to the front...
  3. dlreed

    Bearing margins of safety

    I have a question about standard methodology that bearing manufacturers use to grade bearings. I guess this is a Machine Design 101 (Shigley) question. I have been asked to specify a 'margin of safety' against static and dynamic loads. Is this accepted practice for a bearing, or are we only...
  4. dlreed

    Analytical methods for Crack propogation/fatigue life in elastomers

    I am searching for a numerical method that allows me to determine the fatigue life of a rubber roller due to cyclic loading on the outside diameter that is compressive only. All I can find to date are industry-specific test methods per ASTM or ANSI for example. Thanks for any leads or ideas you...
  5. dlreed

    MILSPECS

    http://stinet.dtic.mil/str/dodiss4_fields.html Try this one.

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