SU118648A1 - Method of measuring effort - Google Patents
Method of measuring effortInfo
- Publication number
- SU118648A1 SU118648A1 SU606660A SU606660A SU118648A1 SU 118648 A1 SU118648 A1 SU 118648A1 SU 606660 A SU606660 A SU 606660A SU 606660 A SU606660 A SU 606660A SU 118648 A1 SU118648 A1 SU 118648A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- force
- oscillations
- rod
- measuring effort
- frequency
- Prior art date
Links
Description
где - фаза колебани ;where is the phase of oscillation;
5- коэффициент затухани ;5 - attenuation coefficient;
6- частота вынужденных колебаний;6 - frequency of forced vibrations;
0 - частота свободных незатухающих колебаний стержн . Известно также, что частота свободных колебаний m зависит от величины продольной (раст гивающей или сжимающей) силы Р.0 is the frequency of free undamped oscillations of the rod. It is also known that the frequency of free oscillations m depends on the magnitude of the longitudinal (stretching or compressive) force P.
%р - низша частота свободных колебаний стержн при наличии продольной силы; % p - the lowest frequency of free vibrations of the rod in the presence of a longitudinal force;
и - низша частота свободных колебаний стержн при отсутствии продольной силы;and - the lowest frequency of free oscillations of the rod in the absence of longitudinal force;
Р - продольна (раст гиваюш,а или сжимаюш;а ) сила; Ркр - критическа сила дл продольного изгиба в плоскости колебаний . Р - longitudinal (stretch, a or squeeze; a) force; Ркр - critical force for buckling in the plane of oscillation.
В случае раст гивающей силы в подкоренном знак плюс, в случае сжимающей силы - минус.In the case of a tensile force in the radicand, the plus sign, in the case of a compressive force, it is a minus.
Подставл значениеSubstitute value
tg}.. ..(1:.-)-0.tg} .. .. (1: .-) - 0.
Откуда следует, что величина i- зависит от величины PI и, замер А, легко найти соответствующее ему значение Р. Перевод значений А в величины Р производитс на основании данных, полученных при испытани х образцовых стержней, причем во врем этих испытаний автоматически учитываетс возможное изменение величины .Whence it follows that the value of i- depends on the value of PI and, the measurement of A, it is easy to find the corresponding value of P. The conversion of the values of A to the values of P is made on the basis of data obtained during testing of sample rods, and during these tests a possible change quantities.
Прибор дл осуществлени предложенного способа работает следующим образом.An apparatus for carrying out the proposed method works as follows.
Колебани от генератора / вибратором 2 сообщаютс стержню 3 и принимаютс приемником 4. Усиленные в усилителе 5 сигналы от приемника сравниваютс по фазе в суммирующем устройстве 6 с колебани ми , вырабатываемыми генератором. Отсчет фазы колебани производитс по шкале измерительного прибора 7. Градуировка шкалы (или составление пересчетных таблиц или графиков) производитс на образцовых стержн х, геометрически подобных испытываемым и одинаково закрепленных.The oscillations from the generator / vibrator 2 communicate to the rod 3 and are received by the receiver 4. The signals amplified in the amplifier 5 from the receiver are compared in phase in the summing device 6 with the oscillations generated by the generator. The oscillation phase is measured on the scale of the measuring device 7. The graduation of the scale (or the compilation of recalculating tables or graphs) is carried out on model rods that are geometrically similar to those tested and are equally fixed.
Предмет изобретени Subject invention
Способ измерени усилий в раст нутых или сжатых стержн х, отличающийс тем, что, с целью обеспечени возможности проведени измерени в реальных услови х, величину усили определ ют по разности фаз между возбуждающей силой и колебани ми контролируемого стержн .A method for measuring forces in stretched or compressed rods, characterized in that, in order to enable measurement in real conditions, the magnitude of the force is determined from the phase difference between the driving force and the oscillations of the rod being monitored.
выражении стоитexpression worth
в зависимость (1) имеем 2SOin dependence (1) we have 2SO
кр cr
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU606660A SU118648A1 (en) | 1958-08-27 | 1958-08-27 | Method of measuring effort |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU606660A SU118648A1 (en) | 1958-08-27 | 1958-08-27 | Method of measuring effort |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU118648A1 true SU118648A1 (en) | 1958-11-30 |
Family
ID=48390668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU606660A SU118648A1 (en) | 1958-08-27 | 1958-08-27 | Method of measuring effort |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU118648A1 (en) |
-
1958
- 1958-08-27 SU SU606660A patent/SU118648A1/en active
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