SU1562752A1 - Method of fatigue testing of samples in symmetric twisting - Google Patents

Method of fatigue testing of samples in symmetric twisting Download PDF

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Publication number
SU1562752A1
SU1562752A1 SU884463879A SU4463879A SU1562752A1 SU 1562752 A1 SU1562752 A1 SU 1562752A1 SU 884463879 A SU884463879 A SU 884463879A SU 4463879 A SU4463879 A SU 4463879A SU 1562752 A1 SU1562752 A1 SU 1562752A1
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SU
USSR - Soviet Union
Prior art keywords
sample
fatigue testing
samples
symmetric
vibration exciter
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SU884463879A
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Russian (ru)
Inventor
Феликс Гершович Вербер
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Производственное Объединение "Ворошиловградский Тепловозостроительный Завод Им.Октябрьской Революции"
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Priority to SU884463879A priority Critical patent/SU1562752A1/en
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Abstract

Изобретение относитс  к способам усталостных испытаний при кручении. Цель изобретени  - повышение точности за счет снижени  чувствительности амплитуды нагрузки к нестабильности скорости вращени  вала вибровозбудител . Образец 5 устанавливают в захватах 7, которые жестко св заны с инерционными массами 3 и 6. Масса 3 св зана с дебалансным вибровозбудителем и посредством упругой св зи с основанием. Параметры стенда и угловую скорость ω нагружени  выбирают из услови  ω2 = 2C1C0/[(I1 + I2)C0 + I2C1], где C0 и C1 - жесткости соответственно образца и св зи, а I1 и I2 - моменты инерции соответствующих инерционных дисков. 3 ил.This invention relates to torsional fatigue testing methods. The purpose of the invention is to improve the accuracy by reducing the sensitivity of the load amplitude to the instability of the rotational speed of the shaft of the vibration exciter. Sample 5 is installed in grippers 7, which are rigidly connected to inertial masses 3 and 6. Mass 3 is associated with an unbalanced vibration exciter and by means of elastic coupling with the base. The parameters of the test bench and the angular velocity ω of loading are chosen from the condition ω 2 = 2C 1 C 0 / [(I 1 + I 2 ) C 0 + I 2 C 1 ], where C 0 and C 1 are the rigidity of the sample and the connection, respectively I 1 and I 2 - the moments of inertia of the corresponding inertial disks. 3 il.

Description

Фиг. 2FIG. 2

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Claims (2)

Формула изобретенияClaim Способ усталостных испытаний образцов при симметричном кручении, заключающийся в том, что образец циклически нагружают кручением с помощью жестко связанных с его торцами двух инерционных масс, соосных образцу и установленных на основании с возможностью поворота вокруг оси колебаний образца, и связанного с одной из масс дебалансного вцбровозбудителя, о т моментом путем упругой связи, связан ной с вибровозбудителем инерционной IQ массы и с основанием, а угловую скорость Q вращения вала вибровозбуди-. теля выбирают из соотношенияThe method of fatigue testing of samples with symmetric torsion, which consists in the fact that the sample is cyclically loaded with torsion using two inertial masses rigidly connected to its ends, coaxial to the sample and mounted on the base with the possibility of rotation around the axis of oscillation of the sample, and associated with one of the masses of unbalanced exciter , about the moment by means of an elastic connection connected with the vibration exciter of the inertial mass IQ and the base, and the angular velocity Q of the shaft rotation is vibrational. the body is selected from the ratio 2С <С о ]5 (iT“i;)c0Ti;c1“» где Со - крутильная жесткость образца;2С <С о ] 5 (iT “i;) c 0 Ti; c 1 “ ”where С о - torsional stiffness of the sample; С4 - крутильная жесткость упругой связи;C 4 - torsional stiffness of the elastic bond; 20 I, и1г - моменты инерции соответствующих инерционных масс,.20 I, and 1 g are the moments of inertia of the corresponding inertial masses. ФигЗFigz
SU884463879A 1988-07-21 1988-07-21 Method of fatigue testing of samples in symmetric twisting SU1562752A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU884463879A SU1562752A1 (en) 1988-07-21 1988-07-21 Method of fatigue testing of samples in symmetric twisting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU884463879A SU1562752A1 (en) 1988-07-21 1988-07-21 Method of fatigue testing of samples in symmetric twisting

Publications (1)

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SU1562752A1 true SU1562752A1 (en) 1990-05-07

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SU884463879A SU1562752A1 (en) 1988-07-21 1988-07-21 Method of fatigue testing of samples in symmetric twisting

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Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Серенсен С.В., ГарфМ.Э., Кузъ- менко В.А. Динамика машин дл испытани на усталость. - .: Машиностроение, 1967, с. 43, рис, 2.17. *

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