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TORSION

Lecture



Torsion is a type of deformation in which only a torque M kr occurs in a cross section of a shaft, and all other internal force factors are zero.
Equilibrium equation:
TORSION
Deformation - shear angle (Fig. 3.2)
TORSION
Voltage
TORSION
TORSION - polar moment of inertia;
D is the diameter of the rod of circular cross section,
TORSION - shear stresses, p • distance from the point where it is determined TORSION to the center of the shaft.
Element twist angle
TORSION - modulus of elasticity of the second kind
Rod twist angle
TORSION
The stress state is pure shear (Fig. 3.1).
TORSION
Fig. 3.1
TORSION
Fig. 3.2
Strength Condition:
TORSION
For fragile materials:
TORSION
For plastic materials:
TORSION
Stiffness condition:
TORSION - permissible twisting angle.

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Strength of materials

Terms: Strength of materials