File Name: torsion of solid and hollow circular shafts .zip
Size: 29283Kb
Published: 26.05.2021
Skip to main content. Search form Search. Shaft torque calculator. Shaft torque calculator shaft torque calculator End Yokes. This calculator uses expected shear stresses as the expected failure mode, and subsequently as the basis for shaft sizing. At stall, measure the torque from the brake and the motor current.
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In the field of solid mechanics , torsion is the twisting of an object due to an applied torque. In sections perpendicular to the torque axis, the resultant shear stress in this section is perpendicular to the radius. In non-circular cross-sections, twisting is accompanied by a distortion called warping, in which transverse sections do not remain plane. Note that the highest shear stress occurs on the surface of the shaft, where the radius is maximum. High stresses at the surface may be compounded by stress concentrations such as rough spots. Thus, shafts for use in high torsion are polished to a fine surface finish to reduce the maximum stress in the shaft and increase their service life.
Plane sections remain plane and perpendicular to the torsional axis Material of the shaft is uniform Twist along the shaft is uniform. Axis remains straight and inextensible. Polar Modulus Polar modulus is defined as ration of polar moment of inertia to the radius of the shaft. Torsional rigidity Torsional rigidity is also called strength of the shaft. It is defined as product of modulus of rigidity C and polar moment of inertia. Open navigation menu. Close suggestions Search Search.
Figure shows a bar or shaft of circular section, subjected to torque T. Such a case is a case of pure torsion,. The above relation states that the intensity of shear stress at any point in the cross-section of a shaft subjected to pure torsion is proportional to its distance from the center and the variation of shear stress with respect to radial distance is linear. It is zero at the center and increases in the radially outward direction and become maximum at the outer periphery And for hollow circular shaft, it is minimum at inner radius and maximum at the outer periphery. The maximum torque transmitted by a circular solid shaft is obtained from the maximum shear stress-induced at the outer surface of the solid shaft. If two shafts are loaded in such a way that angle of twist on both the shaft is the same then this type of connection is known as a parallel connection of shaft.
Embed Size px x x x x Example A shaft of elliptical section with minor axis 2a and major axis 2b is subjected to a torque of 2 kNm. What will be the angular twist in a meter length in this shaft under the given torque? Maximum shear stress,.
Plane sections remain plane and perpendicular to the torsional axis Material of the shaft is uniform Twist along the shaft is uniform. Axis remains straight and inextensible. Polar Modulus Polar modulus is defined as ration of polar moment of inertia to the radius of the shaft. Torsional rigidity Torsional rigidity is also called strength of the shaft. It is defined as product of modulus of rigidity C and polar moment of inertia.
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