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  1. mattyjb88

    Cast Iron Allowable Hertzian Stress

    Hi All. I am working with a problem of a cast iron wheel rolling on a cast iron track (two different grades). This problem is well defined for steel materials, but I have not tackled it before with cast iron. This is an old 1950's piece of equipment. My gut feel is that the allowed hertzian...
  2. mattyjb88

    Meehanite Grade E

    Thanks Tmoose, appreciated. I'm in NZ at the bottom of the world, so shipping of books here usually costs more than the book - and takes a month or more. (don't get me started on availability of engineering material here either! If its not used to milk cows, you basically can't get it)...
  3. mattyjb88

    Meehanite Grade E

    Many thanks, that is all quite helpful information. swall, would you mind posting a photo of the page you refer to in reference? I am unable to locate a copy of the book you refer to. It seems the old books are often some of the best references!
  4. mattyjb88

    Meehanite Grade E

    Hello All I have some existing castings manufactured circa 1955 which drawings indicate are Meehanite Grade E. I'm fairly sure the castings were completed in England, by or through Ransomes & Rapier. The modern Meehanite grades are completely different, and it is exceedingly difficult to find...
  5. mattyjb88

    Assessment of split-pitch (Fellows?) gears

    Hello all. I have not done a lot of gear design/assessment, however a project requires I check the capacity of some existing straight-cut spur gears - so here goes. One set of gears is defined as "4/5 D.P. stub teeth". After some head scratching and research I gather this is a split-pitch...
  6. mattyjb88

    Beam Tension Flange Restraint (Eurocode)

    Hi MRob909, thanks for your reply. Yes, the water load is imparted from the same side as the photo - the skinplate and sealing arrangement are both downstream. The load cannot be reversed (unless something very wrong has gone on!). Re the flat and angle bracing, this is all fixed only to the...
  7. mattyjb88

    Beam Tension Flange Restraint (Eurocode)

    Hi All, hoping for a little guidance here. I am assessing a hydraulic gate which essentially comprises several 24"x7-1/2" horizontal I-Beams rivetted (it's old) to a 1/2" steel skin plate. Span is ~7 m, the ends are arranged such that its essentially simply supported. Hydraulic loading is such...
  8. mattyjb88

    Plotting Reaction Force Relationship

    I am running Solidworks Simulation Professional 2023. I am assessing a simple hydraulic gate which is subject to several different horizontal loads. The gate is supported on either side by a vertical line reaction (think of a plate simply supported at its outer edges). I want to find a way of...
  9. mattyjb88

    Hysteresis Plot - Adding an Average

    Thanks Everyone for your ideas. I gave the AVERAGEIFS() function a go, but it still gave a very variable plot which isn't ideal. Attached is an example dataset as requested. Appreciate any further ideas...
  10. mattyjb88

    Hysteresis Plot - Adding an Average

    Hello all I have what I think is a basic question - here's hoping someone can point me in the right direction. I am plotting stress measured by strain gauges against position for a piece of equipment. The stress follows a typical hysteresis curve. For my analysis I need to add a mean stress...
  11. mattyjb88

    Lifting Chain Idler Pulley Design

    Hi all I am completing a design check for a lifting chain idler pulley. The client is wanting to move to a stainless steel chain which is of slightly different dimensions to the original chain. I am struggling to find design guidelines for the design of this type of pulley. I gather this...
  12. mattyjb88

    Standard Camlock Fitting Dimensions

    Thanks! that helped. That helped me find the following: - The current Standard is A-A-59326B - The standard, with all dimensions etc can be found here: http://www.everyspec.com/COMML+ITEM+DESC+(CID)/A-A-59326B_16384/ Thanks for your help!
  13. mattyjb88

    Standard Camlock Fitting Dimensions

    I am currently working on a design for a stilling chamber (or more accurately a by-pass chamber) for a guided wave radar level sensor. I am wanting to use camlock fittings as they make dissembling and assembling so simple. I am working on a 3D model however I am finding it impossible to find...

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