RU93003725A - METHOD FOR DETERMINING THE LOGARIFMIC DECREMENT OF VIBRATIONS BY THE METHOD OF A RANDOM SPAY - Google Patents
METHOD FOR DETERMINING THE LOGARIFMIC DECREMENT OF VIBRATIONS BY THE METHOD OF A RANDOM SPAYInfo
- Publication number
- RU93003725A RU93003725A RU93003725/28A RU93003725A RU93003725A RU 93003725 A RU93003725 A RU 93003725A RU 93003725/28 A RU93003725/28 A RU 93003725/28A RU 93003725 A RU93003725 A RU 93003725A RU 93003725 A RU93003725 A RU 93003725A
- Authority
- RU
- Russia
- Prior art keywords
- oscillations
- frequency
- amplitude
- resonance
- resonant
- Prior art date
Links
- 238000011089 mechanical engineering Methods 0.000 claims 1
Claims (1)
где δ - логарифмический декремент колебаний; Z - коэффициент расстройки резонанса, равный отношению f/fр; fр - частота резонансных колебаний; f - частота колебаний, при которой фиксируется спад амплитуды колебаний; l - степень спада амплитуды колебаний, равная отношению a/aр; aр - амплитуда резонансных колебаний или параметр, ей пропорциональный; a - амплитуда колебаний с частотой f или параметр, ей пропорциональный.The method is used in mechanical engineering, in the study of the mechanical properties of materials and structural elements. The inventive excite resonant vibrations of the test sample and determine the logarithmic decrement of oscillations according to the parameters of the resonant peak. In the test sample, oscillations are excited at a constant value of the driving force amplitude and by changing the frequency of the driving force resonance oscillations are established, the frequency and amplitude of resonance oscillations are recorded, and then the detuning of the resonance is produced by changing the frequency of the driving force to a certain random value the frequency and degree of decay of the oscillation amplitude determine the logarithmic decrement by the formula
where δ is the logarithmic decrement of oscillations; Z is the coefficient of detuning of the resonance, equal to the ratio f / f p ; f p - frequency of resonant oscillations; f is the oscillation frequency at which the decrease in the amplitude of oscillations is recorded; l is the degree of decay of the amplitude of oscillations, equal to the ratio a / a p ; a p is the amplitude of resonant oscillations or a parameter proportional to it; a is the oscillation amplitude with a frequency f or a parameter proportional to it.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU93003725A RU2086943C1 (en) | 1993-01-21 | 1993-01-21 | Method determining logarithmic decrement of oscillations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU93003725A RU2086943C1 (en) | 1993-01-21 | 1993-01-21 | Method determining logarithmic decrement of oscillations |
Publications (2)
Publication Number | Publication Date |
---|---|
RU93003725A true RU93003725A (en) | 1996-05-20 |
RU2086943C1 RU2086943C1 (en) | 1997-08-10 |
Family
ID=20136177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU93003725A RU2086943C1 (en) | 1993-01-21 | 1993-01-21 | Method determining logarithmic decrement of oscillations |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2086943C1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2531845C1 (en) * | 2013-06-18 | 2014-10-27 | Открытое Акционерное Общество "Государственное Машиностроительное Конструкторское Бюро "Радуга" Имени А.Я. Березняка" | Method to determine logarithmic decrements of oscillations by width of resonance of equally intense oscillations |
RU2531843C1 (en) * | 2013-06-18 | 2014-10-27 | Открытое Акционерное Общество "Государственное Машиностроительное Конструкторское Бюро "Радуга" Имени А.Я. Березняка" | Method to determine single-sided logarithmic decrements of oscillations |
RU2531844C1 (en) * | 2013-06-18 | 2014-10-27 | Открытое Акционерное Общество "Государственное Машиностроительное Конструкторское Бюро "Радуга" Имени А.Я. Березняка" | Method to determine logarithmic decrements of oscillations by width of symmetrical detune of resonance |
RU2715222C1 (en) * | 2019-02-07 | 2020-02-26 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Поволжский государственный технологический университет" | Method of determining elastic-dissipative characteristics of wood |
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1993
- 1993-01-21 RU RU93003725A patent/RU2086943C1/en active
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