SU905716A1 - Method of determination of material elasticity limit - Google Patents
Method of determination of material elasticity limit Download PDFInfo
- Publication number
- SU905716A1 SU905716A1 SU802883172A SU2883172A SU905716A1 SU 905716 A1 SU905716 A1 SU 905716A1 SU 802883172 A SU802883172 A SU 802883172A SU 2883172 A SU2883172 A SU 2883172A SU 905716 A1 SU905716 A1 SU 905716A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- determination
- material elasticity
- elasticity limit
- section
- determining
- Prior art date
Links
- 239000000463 material Substances 0.000 title description 10
- 238000000034 method Methods 0.000 title description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
Изобретение относитс к испытани м материалов и элементов конструкций, в частности к способам определени предела упругости материала,The invention relates to the testing of materials and structural elements, in particular, to methods for determining the elastic limit of a material,
Известен способ определени предела упругости материала, заключающийс в том, что на осесиммётричный образец материала с конической рабочей частью нанос т, риску вдоль образующей , нагружают его крут щим моментом до по влени пластических деформаций в материале, разгружают образец, определ ют сечение, соответствующее началу пластических деформаций , вычисл ют напр жение в этом сечении и по нему суд т о пределе упругости материала 1.The known method for determining the elastic limit of a material, which consists in applying an axially symmetric sample of material with a conical working part, along the generatrix, loads it with a twisting moment until plastic deformation occurs in the material, unloads the sample, determines the section corresponding to the beginning of plasticity. deformations, calculate the stress in this section and judge about the elastic limit of the material 1.
Недостатком известного способа вл етс низка точность определени предела упругости за счет низкой точности определени сечени , где начинаютс пластические деформации.A disadvantage of the known method is the low accuracy of determining the elastic limit due to the low accuracy of determining the cross section where plastic deformations begin.
Цель изобретени - повышение точности определени предела упругости материала.The purpose of the invention is to improve the accuracy of determining the elastic limit of the material.
Указанна цель достигаетс тем, что дополнительно при нагружении и разгрузке регистрируют диаграмму усилие-перемещени риски , устанавливают по ней сечение, в которомThis goal is achieved by the fact that, additionally, during loading and unloading, a force-displacement diagram of risks is recorded, a section is established on it, in which
наблюдаетс незамкнутость петли гистерезиса при сн тии нагрузки, и определ ют напр жение в этом сечении.an open hysteresis loop is observed during unloading, and the voltage in this section is determined.
Способ осуществл ют следующим образом .The method is carried out as follows.
На осесимметричном образце с конической рабочей частью нанос т риску вдоль образующей. Нагружение образца крут щим моментом провод т до On an axisymmetric sample with a conical working part is applied at risk along a generator. Torque loading of the specimen is carried out to
10 по влени в материале пластических деформаций, затем разгружают образцы. При нагружении и разгрузке образца регистрируют диаграмму усилие-перемещ ,ение риски . По диаграмме ус15 танавливают сечение, где замкнута петл гистерезиса переходит в незамкнутую или открытую петлю гистерезиса. В этом случае деформаци при разгрузке необратима. В найденном сечении 10 occurrences of plastic deformation in the material, then the samples are unloaded. When loading and unloading the sample, the force-displacement diagram and the risks are recorded. According to the diagram, a cross section is established, where the closed hysteresis loop passes into an open or open hysteresis loop. In this case, the deformation during unloading is irreversible. In the found section
20 вычисл ют направление, действующее при нагрузке и по нему суд т о пределе упругости материала.20 calculates the direction acting under load and is judged on the elastic limit of the material.
Предлагаемый способ позвол ет повысить точность определени пре25 дела упругости за счет учета обратного упругого последстви при разгрузке материала.The proposed method allows to increase the accuracy of determining the elasticity of the matter by taking into account the reverse elastic consequence when unloading the material.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802883172A SU905716A1 (en) | 1980-02-12 | 1980-02-12 | Method of determination of material elasticity limit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802883172A SU905716A1 (en) | 1980-02-12 | 1980-02-12 | Method of determination of material elasticity limit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU905716A1 true SU905716A1 (en) | 1982-02-15 |
Family
ID=20878015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU802883172A SU905716A1 (en) | 1980-02-12 | 1980-02-12 | Method of determination of material elasticity limit |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU905716A1 (en) |
-
1980
- 1980-02-12 SU SU802883172A patent/SU905716A1/en active
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