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A small holding force exerted on one side can carry a much larger loading force on the other side; this is the principle by which a capstan-type device operates. A holding capstan is a ratchet device that can turn only in one direction; once a load is pulled into place in that direction, it can be held with a much smaller force.
Although spreadsheets like Excel, Open Office Calc, or Google Sheets don't provide a clamping function directly, the same effect can be achieved by using functions like MAX & MIN together, by MEDIAN, [8] [9] or with cell function macros. [10] When attempting to do a clamp where the input is an array, other methods must be used. [11]
Lorentz force on a charged particle (of charge q) in motion (velocity v), used as the definition of the E field and B field. Here subscripts e and m are used to differ between electric and magnetic charges. The definitions for monopoles are of theoretical interest, although real magnetic dipoles can be described using pole strengths.
Bolted Joint Calculator; Bolt Formulas and Calculators; The banging bolt syndrome AISC; Banging bolts — another perspective AISC; Bolt Science - The Jost Effect; Threaded Fasteners - Tightening to Proper Tension US Department of Defense document MIL-HDBK-60, 2.6MB pdf. Fastener Design Manual, NASA-RP-1228, 100pp, 1990 NASA handbook, 5.1 Mb, pdf.
Drawbar force gauges are able to detect broken or weakening components of the drawbar clamping system, can give indications that the unit needs lubrication, detect gripper mis-adjustment, or demonstrate that the incorrect retention knob is being used for the machine. A retention knob is a device screwed into the narrow end of a tool holder ...
The Marman clamp was first produced by Herbert Marx, better known by his stage name Zeppo Marx; [2] [7] it was manufactured by his company, Marman Products from the 1930s. [8] At the time it was designed to secure cargo during transport. The U.S. Military used Marman clamps to transport the atomic bombs used at the end of the Second World War. [9]
For the thin-walled assumption to be valid, the vessel must have a wall thickness of no more than about one-tenth (often cited as Diameter / t > 20) of its radius. [4] This allows for treating the wall as a surface, and subsequently using the Young–Laplace equation for estimating the hoop stress created by an internal pressure on a thin-walled cylindrical pressure vessel:
The basic Gurney equations for flat sheets assume that the sheet of material is a large diameter. Small explosive charges, where the explosive's diameter is not significantly larger than its thickness, have reduced effectiveness as gas and energy are lost to the sides. [1]