Are shaft is design on the basis of rigidity and stiffness?

Mechanical Engineering :: Machine Design 16. A shaft is designed on the basis of rigidity and stiffness.

On what basis are the shafts designs?

The shaft is generally acted upon by bending moment, torsion and axial force. Design of shaft primarily involves in determining stresses at critical point in the shaft that is arising due to aforementioned loading. Other two similar forms of a shaft are axle and spindle.

What is the different between design of shaft on the basis of strength and rigidity explain?

The shafts are designed based on their strength and rigidity considerations. Based on strength includes shafts subjected to bending moment, twisting moment, combined bending and twisting moment and fluctuating loads. While considering rigidity, torsional and lateral rigidity are considered for design.

What is the importance of torsional rigidity?

Advantages of Increased Torsional Rigidity In the simplest terms, vehicles that have high torsional rigidity deliver a superior ride, superior handling and better response to driver input. Improving the torsional rigidity of a vehicle allows the suspension to work more efficiently and predictably.

What is rigidity design?

Rigidity is the property of a structure that it does not bend or flex under an applied force. The opposite of rigidity is flexibility.

Which is act on shaft?

Which of the following act on shafts? Explanation: Shaft is subjected to torsional moment as well as bending moment. 9.

What is the purpose of a shaft?

The term shaft usually refers to a component of circular cross-section that rotates and transmits power from a driving device, such as a motor or engine, through a machine. Shafts can carry gears, pulleys, and sprockets to transmit rotary motion and power via mating gears, belts, and chains.

What is the purpose of shaft draw and discuss various types of shafts?

Types. They are mainly classified into two types. Transmission shafts are used to transmit power between the source and the machine absorbing power; e.g. counter shafts and line shafts. Machine shafts are the integral part of the machine itself; e.g. crankshaft.

What is shaft rigidity?

L length of the shaft. θ is the angle of twist. Thus, from the above equation we can conclude that torsional rigidity of the shaft is expressed as the torque required to produce a twist of one radian per unit length of the shaft.

What is torsional rigidity of a shaft?

The minimum torque required to deform an object by twisting through a unit dimension is known as torsional rigidity. In this case, for twisting the dimension is in angle of twist = 1 radian.

How is torsional rigidity measured?

As the frame twisted, displacement of the frame was measured. From the displacement, the torsional stiffness was calculated as the ratio between the applied torque and the deformation angle. Torsional stiffness CT is calculated as the ratio between applied torque T and the angle of deformation α.

Why is rigid structure important?

The importance of finite rigidity is obvious, but infinitesimal rigidity is also crucial because infinitesimal flexibility in theory corresponds to real-world minuscule flexing, and consequent deterioration of the structure. A rigid graph with edges of these types forms a mathematical model of a tensegrity structure.

What is the difference between strength and rigidity of the shafts?

Shafts are designed on the basis of strength or rigidity or both. Design based on strength is to ensure that stress at any location of the shaft does not exceed the material yield stress. Design based on rigidity is to ensure that maximum deflection (because of bending) and maximum twist (due to torsion) of the shaft is within the allowable limits.

What is the difference between design based on strength and rigidity?

Design based on strength is to ensure that stress at any location of the shaft does not exceed the material yield stress. Design based on rigidity is to ensure that maximum deflection (because of bending) and maximum twist (due to torsion) of the shaft is within the allowable limits.

What is involved in the design of a shaft?

Shaft design involves consideration of the layout of features and components to be mounted on the shaft, specific dimensions and allowable tolerances, materials, deflection, frequency response, life, and manufacturing constraints.

What is the maximum shear theory of shaft design?

Design of shafts of ductile materials, based on strength, is controlled by the maximum shear theory. And the shafts of brittle material would be designed on the basis of the maximum normal stress theory. Various loads subjected on Shafting are torsion, bending and axial loads.