PL398961A1 - A method of stabilizing the stress on metal structures - Google Patents
A method of stabilizing the stress on metal structuresInfo
- Publication number
- PL398961A1 PL398961A1 PL398961A PL39896112A PL398961A1 PL 398961 A1 PL398961 A1 PL 398961A1 PL 398961 A PL398961 A PL 398961A PL 39896112 A PL39896112 A PL 39896112A PL 398961 A1 PL398961 A1 PL 398961A1
- Authority
- PL
- Poland
- Prior art keywords
- frequency
- vibration
- vibrations
- value
- vibrating
- Prior art date
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
Sposób stabilizowania naprezen konstrukcji metalowych, polegajacy na wzbudzaniu drgan wlasnych stabilizowanej konstrukcji poprzez zawibrowanie charakteryzuje sie tym, ze przed zawibrowaniem konstrukcji wyznacza sie dominujace czestotliwosci wlasne, nastepnie przyklada sie, w miejscach wystepowania strzalek postaci wlasnych, periodycznie zmienna sile zawibrowania o czestotliwosci zblizonej do czestotliwosci wlasnych i wibruje sie przez czas zalezny od sily wymuszajacej drgania i wynoszacy od okolo 5 do 60 sekund. Nastepnie zaprzestaje sie wibrowania i ponowne okresla czestotliwosc wlasna stabilizowanej konstrukcji. Czynnosci te powtarza sie do momentu, kiedy obserwowana zmiana czestotliwosci wlasnej zmieni sie o mniej niz blad estymacji tych czestotliwosci. Czestotliwosci wlasne stabilizowanej konstrukcji wyznacza sie testem impulsowym, a wynik pomiaru analizuje sie w dziedzinie czestotliwosci. Sile zawibrowania oblicza sie przez porównanie amplitudy wymuszanych drgan wlasnych z wartoscia odksztalcenia sprezystego konstrukcji, tak aby wartosc maksymalnego naprezenia w trakcie wibrowania nie przekroczyla 75% doraznej granicy plastycznosci i/lub wartosc odksztalcenia sprezystego w postaci wlasnej w trakcie wibrowania byla mniejsza niz 75% maksymalnego odksztalcenia sprezystego stabilizowanej konstrukcji.The method of stabilizing the stress of metal structures, consisting in inducing the own vibrations of the stabilized structure by vibrating, is characterized by the fact that before vibrating the structure, the dominant intrinsic frequencies are determined, then it is applied, in the places where the arrows of their own forms occur, periodically variable vibrating force with a frequency similar to the frequency and vibrates for a time depending on the force forcing the vibrations and about 5 to 60 seconds. Then the vibration is stopped and the intrinsic frequency of the stabilized structure is determined again. These steps are repeated until the observed change in own frequency changes by less than the error in estimating these frequencies. The intrinsic frequencies of the stabilized structure are determined by the impulse test and the measurement result is analyzed in the frequency domain. The vibration force is calculated by comparing the amplitude of forced natural vibrations with the elastic deformation value of the structure, so that the value of the maximum stress during vibration does not exceed 75% of the current yield strength and / or the value of elastic deformation in its own form during vibration is less than 75% of the maximum deformation elastic stabilized construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL398961A PL221147B1 (en) | 2012-04-24 | 2012-04-24 | Method for stabilizing the stress of metal structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL398961A PL221147B1 (en) | 2012-04-24 | 2012-04-24 | Method for stabilizing the stress of metal structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL398961A1 true PL398961A1 (en) | 2013-10-28 |
| PL221147B1 PL221147B1 (en) | 2016-02-29 |
Family
ID=49449311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL398961A PL221147B1 (en) | 2012-04-24 | 2012-04-24 | Method for stabilizing the stress of metal structures |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL221147B1 (en) |
-
2012
- 2012-04-24 PL PL398961A patent/PL221147B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL221147B1 (en) | 2016-02-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| IN2015DN01774A (en) | ||
| WO2012116201A3 (en) | Vibratory analysis of batteries | |
| FR3005735B1 (en) | COMBINING TEST BENCH HIGH FREQUENCY TRIBOLOGICAL SOLICITATION AND OLIGOCYCLIC FATIGUE | |
| MX364858B (en) | Determining a vibration response parameter of a vibratory element. | |
| GB201904123D0 (en) | Methods of monitoring vibration and trim balance using speed probes | |
| MY186594A (en) | Pounding tune mass damper systems and controls | |
| GB2528186A (en) | Alternating frequency time domain approach to calculate the forced response of drill strings | |
| FR2964739B1 (en) | VIBRATION PROTECTION GRID FOR A TURBOMACHINE TESTING BENCH | |
| PL398961A1 (en) | A method of stabilizing the stress on metal structures | |
| EP2927699A3 (en) | Method for measuring vibration characteristic of cantilever | |
| RU2013128898A (en) | METHOD FOR DETERMINING THE PARAMETERS OF A WAVE SOLID GYROSCOPE | |
| Rui-rui et al. | Multiple parameters dynamic modeling and analysis of helicopter rotor multi-layer elastomeric damper | |
| Timurağaoğlu et al. | Investigation of the infill wall effect on the dynamic behaviour of RC frames | |
| RU2013120155A (en) | METHOD FOR DETECTING FATIGUE DAMAGE TO TURBO UNIT SHAFT | |
| LUO et al. | Calculation and Analysis of Original Dynamic Shear Modulus and Function of Soft Clay | |
| Irvine | Energy Response Spectrum | |
| UA89860U (en) | Method for the determination of frequency dependence of young modulus and attenuation ratio of composite materials | |
| PL401070A1 (en) | Method for diagnosing damages of bearings and the roller bearings diagnostic tool | |
| Chuaqui et al. | Non-local models for vibrations of graphene sheets | |
| UA91559U (en) | Method for protection of construction against resonance at vibratory loads | |
| Cruciat et al. | Experimental testing of a base isolated model in laboratory conditions | |
| PL402527A1 (en) | Method for diagnosis of flexible components, especially fatigue tests of cardiac stents | |
| UA98413U (en) | METHOD OF DETERMINATION OF MATERIAL | |
| RU2013102740A (en) | METHOD FOR VIBRATION TESTS OF RADIO ELECTRONIC EQUIPMENT | |
| RU2011116856A (en) | METHOD FOR DETERMINING THE CONCRETE ELASTICITY MODULE IN ELASTIC REINFORCED CONCRETE STRUCTURES OF THE BEAM TYPE |