CYCLIC TENSION WITH INTERNAL PRESSURE OF THIN-WALLED CYLINDERS PRE-STRETCHED WITH TORSION
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- Published: Friday, 07 February 2020 07:09
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Gulgazli A.S., Babaev A.M.
Azerbaijan State University Oil and Industry
Abstract. We consider cyclic tension with internal pressure of a thin-walled cylinder, which is prestretched with torsion. Such cylinders are used in torque hydraulic cylinders. According to the principle of action, torque hydraulic cylinders are similar to power hydraulic cylinders. The main difference is that the rod of torque hydraulic cylinders does not translate forward and reverse, but rotates. The angle of rotation of the stem is limited to 360º.
Momentary hydraulic cylinders are also often called rotary hydraulic cylinders, or simply blinkers.
In fact, momentary hydraulic cylinders are inertialess engines that are capable of developing large torques, regardless of speed. Their use in most cases simplifies the kinematics of mechanisms.
Momentary hydraulic cylinders are widely used in agricultural machinery and special purpose machines. They are used to rotate the excavator bucket, rotate the scaffold platform and any other purposes requiring swing equipment. The effect of residual stresses on the number of cycles required for fatigue failure has also been investigated.
Keywords. Thin-walled cylinder, stress, tensile, torsion, strength condition, yield strength, fatigue failure.10.