Types of vibration may be classified according to : the actuating force on the body, and the stresses in the supporting medium, as shown in image. According to the Actuating Force Free or Natural Vibrations If the periodic...
Category - Mechanical
Since most of the vibrating system follow harmonic motion (SHM), therefore it is essential to have proper understanding of SHM related basic concepts. A body is said to have simple harmonic motion (SHM), if it moves or vibrates...
Any motion which repeats itself after an interval of time is called vibration or oscillation or periodic motion. All bodies possessing mass and elasticity are capable of producing vibrations. Vibration problems, in practice...
Balancing machines are used to: Determine whether the rotating parts of a machine is completely balanced or not, Check the static dynamic balancing of rotating parts, Determine the next extent to which balancing is done (in case...
Consider a reciprocating engine mechanism OCP shown in Fig, the piston mass at P of the reciprocating parts is accelerating. Thus a primary force is required to accelerate the reciprocating mass. This force acts in a direction...
A reciprocating engine say, an IC engine has both rotating and reciprocating parts. The rotating masses in a single cylinder and a multi cylinder can be balanced using the methods already discussed in the previous chapter. The...
In the following sections, the frequency of transverse vibrations of various systems and the phenomenon of whirling speed have been discussed. Natural Frequency of Free Transverse Vibrations Consider a shaft of negligible mass...
Step 1 : The delivery valve is closed and the suction pipe, casing and portion of the delivery pipe up to the delivery valve are completely filled with the liquid so that no air pocket is left. This process is called priming a...
Centrifugal pumps are the devices which convert the mechanical energy into hydraulic energy by means of centrifugal force acting on the fluid. Centrifugal pumps are classified as roto dynamic type of pumps in which a dynamic...
In a double acting reciprocating pump, the suction and delivery strokes occur simultaneously. When the crank rotates from IDC to ODC, a vacuum is created on the left side of the piston and the liquid is sucked from the sump...
