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Chapter 19

Torsion

Tensioni in un Albero
Tensioni in un Albero
A shaft PQ is twisted when subjected to equal and opposite torques on either side. Consider a section perpendicular to the shaft's axis through an ...
Deformazione in un Albero Circolare
Deformazione in un Albero Circolare
A unique property of circular shafts is that under torsion, every cross-section remains plane and undistorted, rotating as a solid rigid slab. To ...
Albero circolare - Sollecitazione in Intervallo Lineare
Albero circolare - Sollecitazione in Intervallo Lineare
Consider a case when the torque applied to the circular shaft is within Hooke's law limit, so there is no permanent deformation. Now, recall the ...
Angolo di torsione - Gamma Elastica
Angolo di torsione - Gamma Elastica
Consider a circular shaft of length L and a uniform cross-section of radius r subjected to a torque at its free end. The maximum shearing strain in the ...
Angolo di torsione - Risoluzione di problemi
Angolo di torsione - Risoluzione di problemi
The electric motor exerts a 700 N-m torque on an aluminium shaft, causing it to rotate at a constant speed. Pulleys B and C experience torques of 300 N-m ...
Progettazione degli alberi di Trasmissione
Progettazione degli alberi di Trasmissione
The design specifications required for a transmission shaft are the power transmitted by the shaft and its rotation speed. Based on these specifications, ...
Concentrazioni di Sollecitazioni negli Alberi Circolari
Concentrazioni di Sollecitazioni negli Alberi Circolari
Recall the elastic torsion formula, applicable to a circular shaft with a uniform cross-section. Here, it is assumed that the shafts are loaded at their ...
Deformazione Plastica negli Alberi Circolari
Deformazione Plastica negli Alberi Circolari
When materials are subjected to stresses exceeding their yield strength, plastic deformation occurs, causing a permanent strain. In the case of circular ...
Alberi Circolari - Materiali Elastoplastici
Alberi Circolari - Materiali Elastoplastici
Within the elastic limit, the maximum stress in a solid circular shaft varies linearly with a radial distance from its axis. As the torque increases, the ...
Tensioni Residue nell'Albero Circolare
Tensioni Residue nell'Albero Circolare
In elastoplastic materials, residual stress can develop when the material undergoes plastic deformation due to high shearing stress or large strains. When ...
 Torsione delle membrature non circolari
 Torsione delle membrature non circolari
During torsional loading, the cross-sections of the circular shafts remain plane and undistorted since they are axis-symmetric. However, due to the lack ...
 alberi cavi a pareti sottili
 alberi cavi a pareti sottili
Consider a small portion of width 'dx' from a thin-walled hollow shaft of thickness 't' subjected to torsional loading. Since the portion ...
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