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Recent content by BreadTruck

  1. BreadTruck

    Calculation of stress caused by an impact

    thedillweed, The above equation is not directly applicable. Blodgett's reference will help. It is a little cloudy at times [at least it was for me] but it is worth the absorption. I would look at relating the stroke of the spring to the deflection of the bumper and the trasfer of kinetic...
  2. BreadTruck

    Need Help on Chain Pull Calculations for Conveyor

    I'm not conveyor-wise and I'm sure most of you will get a kick out of this. I'm sure some of you have encountered this problem and could enlighten me on this. The conveyor system is called a 2-strand roller flight floor conveyor. The conveyor track that supports the chain is fabricated from a...
  3. BreadTruck

    Calculation of stress caused by an impact

    Design of Welded Structures by Omer Blodgett is a good reference and should put you in the ball park. For spring-type bumper blocks, the longitudinal crane stop force may be calculated from the following formula: F=WV^2/gc W = Total weight of crane exclusive of lifted load V = specified crane...
  4. BreadTruck

    Designing for Impact Loading

    The floor plate is 15 inches wide x 26 inches (span) long and 1/2 in thick. The wheelbase of the fork lift is say 54 inches (in the direction parallel to the direction of travel). The fork truck can only traverse across the floor plate in the 15 inch direction and only three sides of the...
  5. BreadTruck

    Designing for Impact Loading

    I understand that there are a couple of different ways that I can approach this type of design problem --applying an impact factor to the maximum force and use this new derivation in standard engineering calculation OR estimate the energy that is to be absorbed by the resisting member and design...

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