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Types of mechanical forces

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A force exerted on a body can cause a change in either the shape or the motion of the body.The unit of force in SI system is the Newton(N) and CGS system is dyne.No solid body is perfectly rigid and when force are applied to it,changes in dimension occur.such changes are not always perceptible to the human eye since they are negligible. For the example,The span of a bridge will sag under the weight of a vehicle and a spanner will bend slightly when tightening a nut. It is also important for civil engineers and designers to appreciate the effects of forces on materials.Together with their mechanical properties of the materials. There three main types of mechanical forces that can act on a body.They are 1)Tensile force 2) compressive force and 3) shear force
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METHODS OF LUBRICATION:

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Various methods are used to apply the lubricant to the machine tools.Lubricating oil is generally applied to sliding parts with the help of oil-can.Lubricants are also applied by the following systems.

       1)Gravity feed system.

       2) Pressure feed system.

In the gravity feed system lubricant is applied to the sliding parts through oilcups which are located at the higher levels of sliding parts l.In this oil flows to the parts due to gravity.

Pressure feed system is generally used in automobiles where lubricants are applied under pressure by using oil pump which is situated below the engine.

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  1. Deepak26 March 2020 at 04:43

    Thanks, very impressive article. I appreciate you to continue your work.
    Discover more here

    ReplyDelete

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