CN100578190C - Liquid-filling compressing method for testing metal deformation flow - Google Patents
Liquid-filling compressing method for testing metal deformation flow Download PDFInfo
- Publication number
- CN100578190C CN100578190C CN200610010359A CN200610010359A CN100578190C CN 100578190 C CN100578190 C CN 100578190C CN 200610010359 A CN200610010359 A CN 200610010359A CN 200610010359 A CN200610010359 A CN 200610010359A CN 100578190 C CN100578190 C CN 100578190C
- Authority
- CN
- China
- Prior art keywords
- sample
- liquid
- hydraulic pressure
- pressing machine
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
One test method for testing the liquid filling compress method when metal distorts and flows to control the stress field formed by metal and to observe and study the behavior of metal distortion and flowing in the beforehand designed stress field. The first step is to record sample originality data. The second is putting the sample into liquid filling room. The third is pressing drift pin and making axial main press on the sample in the liquid filling room, and at the same time changing the volume of high press medium in the liquid filling room to affect the liquid press. Change the liquid press to get the needed main press of landscape orientation according to the beforehand designed liquid press and the load of press machine and the sample compresses and distorts then record data. The forth is repeating the second and third one by testing different liquid press and load of press machine and recording the data. The fifth is using this method to analyze the data to get the relationship between stress and metal distortion and flowing.
Description
Technical field
The present invention relates to a kind of method of inspection, be specifically related to the liquid-filling compressing method that a kind of testing metal deformation flows.
Background technology
The method of metal deformation flowing law mainly contains three classes in the research plastic forming process now: 1) physical Modeling Method; 2) Method for Numerical; 3) process test method.In physical Modeling Method, usually adopt the equivalent material as the actual metal material such as plasticity mud, photoplasticity material, plumbous sample, physical difference between equivalent material and the real metal material makes analog result have error, thereby the application of physical Modeling Method is restricted.Along with the progress of nonlinear finite element, the Method for Numerical of metal forming process becomes main research means gradually.But for the metal forming process of complexity, because stress field, velocity field, temperature field and the geometric configuration of complexity and the coupling of boundary condition in the forming process, Method for Numerical also is difficult to truly and exactly reflect technological process.The process test method is verified as necessity of Method for Numerical usually and is replenished, but good process test method result has higher cogency and theoretical value usually.Therefore, the process test method becomes the indispensable link of research plastic yield body deformability flowing law.From physically, the internal factor that the decision material deformation flows is residing stress state of material and stress field on every side thereof, only understand that distortion of materials flows and its residing stress state and stress field between relation, and then by the various external factor of control, as mould geometry, load mode, plastic force, friction condition etc., control and obtain required stress field, fundamentally the distortion of effective control material is flowed.But present most of process test method can only be analyzed and predicts blank shape and defective, can not directly provide the stress state of deformable body inside, therefore can't study the influence that stress and stress field flow to flow of metal.For the distortion of fundamentally studying metal material flow and stress field between relation, need control the stress field in the metal forming process, promptly under the stress field of design in advance, observe and research flow of metal flow behavior.
Summary of the invention
What the present invention mainly solved is the stress state that can not directly provide deformable body inside in having process test, and a kind of method of inspection that realizes designing in advance metal stress state of living in and stress field proposed, i.e. the liquid-filling compressing method that flows of testing metal deformation.Utilize this method, can draw metal deformation flowing law under the complicated controlled stress field effect.
Its checkout procedure comprises following step successively:
Step 1: the raw data of record sample;
Step 2: sample is put into liquid-filled chamber;
Step 3: drift presses down, make the sample that is in the topping up chamber obtain axial principal stress, being in high-pressure medium around the sample in the liquid-filled chamber simultaneously also is subjected to drift and presses down the volume change of bringing, make hydraulic pressure change, regulating hydraulic pressure makes and a bit obtains identical horizontal principle stress arbitrarily all the time in the sample body in the process that presses down, reach the hydraulic pressure and the pressing machine load of design in advance, make sample generation compression deformation, record data;
Step 4: repeating step two, step 3, adopt different hydraulic pressure and pressing machine load that sample is tested, and record data;
Step 5: the check data that obtains according to above step adopts existing method to analyze, and draws stress and stress field and the flow of metal relation between mobile.
The present invention is by regulating hydraulic pressure and pressing machine load, can obtain different stress fields, solved the control problem of flow of metal body stress state of living in and stress field, for research metal deformation flowing law under the controlled stress field of complexity provides the reliable method of inspection.
Description of drawings
Fig. 1 be cylindrical sample in the topping up compression set, pressurize the check before view, 1 among Fig. 1 is drift, the 2nd, liquid-filled chamber, the 4th, cylindrical sample, the 5th, high-pressure medium, the 6th, operation valve, the 7th, pipeline; Fig. 2 is the graph of relation that cylindrical sample carries out topping up when check compression pressing machine load and sample deformational displacement; Fig. 3 is that cylindrical sample carries out topping up when check compression hydraulic pressure and presses down the time relation curve map; Fig. 4 is the view after cylindrical sample is compressed in the topping up compression set; Fig. 5 be the annular sample in the topping up compression set, pressurize the check before view, 3 among Fig. 5 is annular samples, the 8th, the pipeline in centre; Fig. 6 is the graph of relation that the annular sample carries out topping up when check compression pressing machine load and sample deformational displacement; Fig. 7 is that the annular sample carries out topping up when check compression hydraulic pressure and presses down the time relation curve map; Fig. 8 is the view after the annular sample is compressed in the topping up compression set.
Embodiment
Embodiment one: in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4 present embodiment is described, its checkout procedure comprises following step:
Step 1: the raw data that writes down cylindrical sample 4;
Step 2: cylindrical sample 4 is put into liquid-filled chamber 2;
Step 3: drift 1 presses down, make the cylindrical sample 4 that is in liquid-filled chamber 2 chambeies obtain axial principal stress, being in high-pressure mediums 5 around the cylindrical sample 4 in the liquid-filled chamber 2 simultaneously also is subjected to drift 1 and presses down the volume change of bringing, make hydraulic pressure change, regulating hydraulic pressure makes and a bit obtains identical horizontal principle stress arbitrarily all the time in cylindrical sample 4 bodies in the process that presses down, reach the hydraulic pressure and the pressing machine load of design in advance, make cylindrical sample 4 that compression deformation, record data take place;
Step 4: repeating step two, step 3, adopt different hydraulic pressure and pressing machine load that cylindrical sample 4 is tested, and record data;
Step 5: the check data that obtains according to above step adopts existing method to analyze, and obtains stress and stress field and the flow of metal relation between mobile.
Embodiment two: in conjunction with Fig. 5, Fig. 6, Fig. 7, Fig. 8 present embodiment is described, its checkout procedure comprises following step:
Step 1: the raw data of record annular sample 3;
Step 2: annular sample 3 is put into liquid-filled chamber 2 middles;
Step 3: drift 1 presses down, make the annular sample 3 that is in liquid-filled chamber 2 chambeies obtain axial principal stress, being in high-pressure mediums 5 around the annular sample 3 in the liquid-filled chamber 2 simultaneously also is subjected to drift 1 and presses down the volume change of bringing, make hydraulic pressure change, regulating hydraulic pressure makes and a bit obtains identical horizontal principle stress arbitrarily all the time in annular sample 3 bodies in the process that presses down, reach the hydraulic pressure and the pressing machine load of design in advance, make annular sample 3 that compression deformation, record data take place;
Step 4: repeating step two, step 3, adopt different hydraulic pressure and pressing machine load that annular sample 3 is tested, and record data;
Step 5: the check data that obtains according to above step adopts existing method to analyze, and obtains stress and stress field and the flow of metal relation between mobile.
Embodiment three: in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4 present embodiment is described, present embodiment is that with the different of embodiment one adjusting hydraulic pressure is the hydraulic pressure strength that utilization pipeline 7, operation valve 6 and external hydraulic opertaing device are regulated high-pressure medium 5 in the step 3.Other step is identical with embodiment one.
Embodiment four: in conjunction with Fig. 5, Fig. 6, Fig. 7, Fig. 8 illustrates present embodiment, present embodiment is put into the middle of liquid-filled chamber 2 with the different annular samples 3 that are of embodiment two, annular sample 3 liquid-filled chamber 2 minutes for two parts, be a part and the outer part of ring in the ring, adjusting hydraulic pressure in the step 3 is the hydraulic pressure strength that the original pipeline 7 of utilization is regulated the outer high-pressure medium 5 of ring, be in the hydraulic pressure strength that the pipeline 8 of ring inner bottom part is regulated the high-pressure medium 5 in the rings, regulate the pressure reduction that outer hydraulic pressure of ring and the hydraulic pressure in the ring produce, make in the annular sample 3 arbitrarily a bit in the process that presses down inside and outside obtain identical horizontal principle stress all the time, reach the hydraulic pressure and the pressing machine load of design in advance, make annular sample 3 that compression deformation, record data take place.Other step is identical with embodiment two.
Embodiment five: in conjunction with Fig. 1, Fig. 4, Fig. 5, Fig. 8 present embodiment is described, it is to give on the drift 1 one by pressing machine at the uniform velocity constant force load is resulting that present embodiment and the different samples that are to be in liquid-filled chamber 2 chambeies of embodiment three, embodiment four obtain axial principal stress.Other step and embodiment three, embodiment four are identical.
Embodiment six: present embodiment is described in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, present embodiment and embodiment one, embodiment two different are to reach in the step 3 hydraulic pressure of design in advance and pressing machine load and then finish identical drafts, after making sample generation compression deformation, the data of record have drafts, the final height of sample, sample upper and lower surface final diameter, sample bulge place diameter, calculate the graph of relation of pressing machine load and sample deformational displacement according to raw data.Other step and embodiment one, embodiment two are identical.
Embodiment seven: present embodiment is described in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, present embodiment and embodiment one, embodiment two different are to reach in the step 3 hydraulic pressure of design in advance and pressing machine load and then finish the limit and depress, ultimate limit state is that crackle appears in specimen surface, the data of record have maximum reduction, the final height of sample, sample upper and lower surface final diameter, sample bulge place diameter, calculate the graph of relation of pressing machine load and sample deformational displacement according to raw data.Other step and embodiment one, embodiment two are identical.
Claims (8)
1, the mobile liquid-filling compressing method of a kind of testing metal deformation is characterized in that its checkout procedure comprises following step successively:
Step 1: the raw data of record sample;
Step 2: sample is put into liquid-filled chamber (2);
Step 3: drift (1) presses down, make the sample that is in liquid-filled chamber (2) chamber obtain axial principal stress, being in high-pressure medium (5) around the sample in the liquid-filled chamber (2) simultaneously also is subjected to drift (1) and presses down the volume change of bringing, make hydraulic pressure change, regulating hydraulic pressure makes and a bit obtains identical horizontal principle stress arbitrarily all the time in the sample body in the process that presses down, reach the hydraulic pressure and the pressing machine load of design in advance, make sample generation compression deformation, record data;
Step 4: repeating step two, step 3, adopt different hydraulic pressure and pressing machine load that sample is tested, and record data;
Step 5: the check data that obtains according to above step adopts existing method to analyze, and draws stress and stress field and the flow of metal relation between mobile.
2, the mobile liquid-filling compressing method of a kind of testing metal deformation according to claim 1 is characterized in that sample is cylindrical sample (4).
3, the mobile liquid-filling compressing method of a kind of testing metal deformation according to claim 1 is characterized in that sample is annular sample (3).
4, the mobile liquid-filling compressing method of a kind of testing metal deformation according to claim 2, it is characterized in that regulating in the step 3 hydraulic pressure is the hydraulic pressure strength that utilization pipeline (7), operation valve (6) and external hydraulic opertaing device are regulated high-pressure medium (5).
5, the liquid-filling compressing method that a kind of testing metal deformation according to claim 3 flows, it is characterized in that annular sample (3) puts into the middle of liquid-filled chamber (2), annular sample (3) divides liquid-filled chamber (2) for two parts, the outer part of a part and ring in the ring, adjusting hydraulic pressure in the step 3 is the hydraulic pressure strength that the original pipeline of utilization (7) is regulated the outer high-pressure medium (5) of ring, be in the hydraulic pressure strength that the pipeline (8) of ring inner bottom part is regulated the high-pressure medium (5) in the ring, regulate the pressure reduction that outer hydraulic pressure of ring and the hydraulic pressure in the ring produce, make in the annular sample (3) arbitrarily a bit in the process that presses down inside and outside obtain identical horizontal principle stress all the time, reach the hydraulic pressure and the pressing machine load of design in advance, make annular sample (3) that compression deformation, record data take place.
6, the liquid-filling compressing method that flows according to claim 4 or 5 described a kind of testing metal deformations, it is characterized in that being in sample liquid-filled chamber (2) chamber in, to obtain axial principal stress be that at the uniform velocity constant force load is resulting to last one of drift (1) by pressing machine.
7, the mobile liquid-filling compressing method of a kind of testing metal deformation according to claim 6, the hydraulic pressure that it is characterized in that reaching in the step 3 in advance design is with pressing machine load and then finish identical drafts, make sample generation compression deformation, the data of record have drafts, the final height of sample, sample upper and lower surface final diameter, sample bulge place diameter, calculate the graph of relation of pressing machine load and sample deformational displacement according to raw data.
8, the mobile liquid-filling compressing method of a kind of testing metal deformation according to claim 6, it is characterized in that reaching in the step 3 in advance the hydraulic pressure of design and pressing machine load and then finish limit drafts, ultimate limit state is that crackle appears in specimen surface, the data of record have maximum reduction, the final height of sample, sample upper and lower surface final diameter, sample bulge place diameter, calculate the graph of relation of pressing machine load and sample deformational displacement according to raw data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610010359A CN100578190C (en) | 2006-08-02 | 2006-08-02 | Liquid-filling compressing method for testing metal deformation flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610010359A CN100578190C (en) | 2006-08-02 | 2006-08-02 | Liquid-filling compressing method for testing metal deformation flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1888856A CN1888856A (en) | 2007-01-03 |
| CN100578190C true CN100578190C (en) | 2010-01-06 |
Family
ID=37578145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610010359A Expired - Fee Related CN100578190C (en) | 2006-08-02 | 2006-08-02 | Liquid-filling compressing method for testing metal deformation flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100578190C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588757A (en) * | 2015-12-07 | 2016-05-18 | 河南航天精工制造有限公司 | Upset test device |
| CN106644771B (en) * | 2017-01-17 | 2019-06-11 | 吉林大学 | A kind of measuring device and measuring method of the rubber volume modulus based on fluid pressure |
-
2006
- 2006-08-02 CN CN200610010359A patent/CN100578190C/en not_active Expired - Fee Related
Non-Patent Citations (3)
| Title |
|---|
| JP2000321187 A 2000.11.24 |
| 管材内压液力成形的稳定性分析. 戴昆，何祝斌，王忠仁.塑性工程学报，第7卷第4期. 2000 |
| 管材内压液力成形的稳定性分析. 戴昆，何祝斌，王忠仁.塑性工程学报，第7卷第4期. 2000 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1888856A (en) | 2007-01-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107748110B (en) | Microcomputer-controlled electro-hydraulic servo rock triaxial dynamic shear seepage coupling test method | |
| CN107782634B (en) | Microcomputer-controlled electro-hydraulic servo rock triaxial dynamic shear seepage coupling test device | |
| CN107505204A (en) | A kind of method that damage constructive model of rock mass is established based on least energy consumption principle | |
| CN105259035B (en) | A kind of construction method of rock material timeliness-plastoelasticity constitutive model | |
| CN107063893B (en) | Temperature-suction-stress coupling multifunctional direct shear single shear test system and operation method thereof | |
| CN105388054A (en) | Preparation device and preparation method of dynamic geology-based simulated rock core | |
| CN113032955B (en) | Construction method suitable for rock dynamic constitutive model under seismic load | |
| CN105486589B (en) | The vacuum consolidation testing device of three Spindle Status lower unit soil samples | |
| CN112730056B (en) | Method for predicting non-uniform mechanical property of brittle solid material | |
| CN112461676A (en) | High-temperature-water pressure-stress multi-field coupling model test device and test method | |
| CN100578190C (en) | Liquid-filling compressing method for testing metal deformation flow | |
| CN105699202B (en) | A kind of hydraulic device measuring Mechanics Parameters of Rock Mass | |
| CN103149095B (en) | Test method and test device for studying steel-soil contact surface mechanical property | |
| CN111912709A (en) | Method for accurately measuring compressive strength of concrete material under variable confining pressure state | |
| CN105136583B (en) | A kind of moulded coal manufacturing process hole crack evolution experimental rig | |
| CN211740921U (en) | Deep high-temperature and high-pressure environment rock stretching and tension-compression circulating mechanical experiment device | |
| CN102706528B (en) | Gas flow characteristic testing device of fragmented coal rock mass | |
| CN110750871A (en) | Friction type granular material creep test simulation method based on discrete elements | |
| CN113312819A (en) | Rubber tube valve optimization design method based on CAE technology | |
| CN111104762A (en) | Three-axis creep test simulation method for cementing material based on discrete elements | |
| CN116644677B (en) | DEM-based coal-rock mass hydraulic fracturing anti-reflection effect quantification method | |
| CN217211901U (en) | A simple and easy confined pressure is applyed device for cylinder test piece | |
| CN111307606A (en) | Deep high-temperature and high-pressure environment rock stretching and tension-compression circulating mechanical experiment device | |
| CN110044585A (en) | A kind of spherical shape partition fatigue experimental device and test method | |
| Roe et al. | Performance prediction of exfoliated graphite seals: 1. Determination of parameters and verification of model |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100106 Termination date: 20160802 |