Dynamics of machine - Essay Example

Due: Dynamics of machine This is considered as a branch of theory of machines that deals with the motion of machines and their mechanism while considering the forces that acts on them. The theory of dynamics of machines deals with problems such as: definition of laws of motion, control of components of the mechanism, determining the losses of friction, determination of the kinematics pairs, and also investigating the balance between machines and mechanism (Norton, 67). Using the characteristics of external forces of differential equations the law of motion of mechanical elements can easily be determined especially if the equations are of the mechanical system or machine units, which usually consists of larger components of machines such as motors, transmission mechanisms, and control devices or in most cases a working machine.

The concept of dynamic of machine consists of a number of equations that are equal to the number of degree of mechanical system’s freedom. For the equation to work or to enhance the ease of the mechanism operation, all forces or masses in a plane mechanism with a single degree of freedom are to be reduced to a single link which is normally called reference point or reduction link (89). And the subjective link that is to be applied to the reduction link is known as reduced moment of inertia.

When the moment of reduction is equal to the aggregate of all moments and the forces applied to the links of the mechanism, the subjective moment of inertia is considered to be the reduced moment of inertia. The chain of the equation of dynamic of machines includes the determination of the kinetic energy, and when the kinetic energy of the reduction link is equal to the sum of the kinetic energy of all of the mechanism, the reduced force can be analogously (100). Through rational selection and placement of counterweights, that reduces the dynamic pressure in kinematic pair of mechanisms the concept of machines and mechanism can be easily balanced.

Practically the machines are always balanced by reducing the vibrations and balancing the rotation of masses, while in modern high speed machines the inertia forces attain high values (100). The relation of the dynamic studies in machines is highly linked to the calculation of the strength and stiffness of the machine components that highly relates to the dimension and the designs of the parts. The studies are also performed through three dimensions mechanisms and with many degrees of freedom.

Therefore it is important to notice that the operations performed by systems of high degree of universality. Work CitedNorton, Robert L. Kinematics And Dynamics Of Machinery. Boston, Mass.: McGraw-Hill, 2009. Print.