RU2000119329A - METHOD FOR DETERMINING HYSTERESIS AND LINEAR-VISCOUS INTERNAL FRICTION COEFFICIENTS IN VISCOELASTIC MATERIAL - Google Patents

METHOD FOR DETERMINING HYSTERESIS AND LINEAR-VISCOUS INTERNAL FRICTION COEFFICIENTS IN VISCOELASTIC MATERIAL

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RU2000119329A
RU2000119329A RU2000119329/28A RU2000119329A RU2000119329A RU 2000119329 A RU2000119329 A RU 2000119329A RU 2000119329/28 A RU2000119329/28 A RU 2000119329/28A RU 2000119329 A RU2000119329 A RU 2000119329A RU 2000119329 A RU2000119329 A RU 2000119329A
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Russia
Prior art keywords
amplitude
coefficients
viscoelastic material
hysteresis
linear
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RU2000119329/28A
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Russian (ru)
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RU2183320C2 (en
Inventor
Борис Владимирович Лушников
Владимир Александрович Шеполухин
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Курский государственный технический университет
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Priority to RU2000119329A priority Critical patent/RU2183320C2/en
Priority claimed from RU2000119329A external-priority patent/RU2183320C2/en
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Publication of RU2183320C2 publication Critical patent/RU2183320C2/en
Publication of RU2000119329A publication Critical patent/RU2000119329A/en

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Claims (1)

Способ определения коэффициентов гистерезисного и линейно-вязкого внутреннего трения в вязкоупругом материале, заключающийся в том, что возбуждают резонансные колебания системы вынуждающей гармонической силой и регистрируют параметры колебательного процесса, по которым определяют искомые коэффициенты, отличающийся тем, что возбуждение резонансных колебаний производят дважды, при повторном их возбуждении изменяют приведенную инерционность колебательной системы, при этом изменяют амплитуду вынуждающего гармонического воздействия так, чтобы амплитуда установившихся вынужденных колебаний оставалась постоянной, при каждом возбуждении колебаний регистрируют амплитуды вынуждающего воздействия Р1 и Р2, частоту резонанса ωp1 и ωp2, амплитуду колебаний А, а коэффициенты внутреннего гистерезисного трения η и линейно-вязкого трения b рассчитывают соответственно по формулам
Figure 00000001

Figure 00000002

где к - приведенный коэффициент жесткости колебательной системы.The method for determining the coefficients of hysteresis and linearly viscous internal friction in a viscoelastic material, which consists in the fact that the resonant vibrations of the system are excited by a driving harmonic force and the parameters of the oscillatory process are recorded, which determine the desired coefficients, characterized in that the resonant vibrations are excited twice, when repeated their excitation change the reduced inertia of the oscillatory system, while changing the amplitude of the forcing harmonic effect so that the amplitude of steady-state oscillation remained constant for each excitation oscillations recorded amplitude urging impact F 1 and F 2, the frequency of resonance ω p1 and ω p2, oscillation amplitude A, and the coefficients of the internal hysteresis friction η and linearly viscous friction b is calculated respectively according to the formulas
Figure 00000001

Figure 00000002

where k is the reduced coefficient of rigidity of the oscillatory system.
RU2000119329A 2000-07-19 2000-07-19 Method of determination of coefficients of hysteresis and linear viscous internal in viscoelastic material RU2183320C2 (en)

Priority Applications (1)

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RU2000119329A RU2183320C2 (en) 2000-07-19 2000-07-19 Method of determination of coefficients of hysteresis and linear viscous internal in viscoelastic material

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Application Number Priority Date Filing Date Title
RU2000119329A RU2183320C2 (en) 2000-07-19 2000-07-19 Method of determination of coefficients of hysteresis and linear viscous internal in viscoelastic material

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RU2183320C2 RU2183320C2 (en) 2002-06-10
RU2000119329A true RU2000119329A (en) 2002-06-20

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CN114563307B (en) * 2022-03-04 2023-11-24 浙江大学 Device and method for measuring fluid viscosity coefficient by using stepping wheel pendulum resonance method

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