CN107727505A - A kind of plane strain extension (PSE) method - Google Patents
A kind of plane strain extension (PSE) method Download PDFInfo
- Publication number
- CN107727505A CN107727505A CN201710833193.2A CN201710833193A CN107727505A CN 107727505 A CN107727505 A CN 107727505A CN 201710833193 A CN201710833193 A CN 201710833193A CN 107727505 A CN107727505 A CN 107727505A
- Authority
- CN
- China
- Prior art keywords
- sample
- experiment
- plane strain
- pse
- strain
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of plane strain extension (PSE) method, including：Step 1: experiment is made by pipe sample with metal sheet using technologies such as laser weldings.Step 2: by pipe sample both ends plug good seal, wherein one end plug center is provided with fuel feed hole, fuel feed hole connection external hydraulic system.Step 3: sample is clamped on cupping machine using special grasping system, Axial extensometer is loaded onto.Step 4: carrying out tension test using draw speed V, the data of pulling force sensor and extensometer are recorded during experiment.Step 5: stopping experiment after specimen broke and exporting the stress-strain diagram of material, the tension test under plane strain stress state is completed.The present invention can obtain the stress-strain diagram under the material strain paths, provide measured performance data for the foundation of steel sheet material model, simultaneously can be used for crystallized ability of the assessment material under plane strain state.
Description
Technical field
The present invention relates to a kind of material performance test method of metal sheet, and in particular to a kind of plane strain extension (PSE)
Method, belong to material properties test technical field.
Background technology
The material properties test of metal sheet is constantly subjected to widely pay attention to, and its mechanics is compared with forming property method of testing
Much more in other metal materials, main performance test methods have stretching test method（Test including n values and r values）、
Hole expansion test method, AEG-process method, ear test method processed, Limit Drawing test method, shaping limit curve test method
With rebound test method etc., except stretching test method can obtain material under simple tension state in these test methods
Outside constitutive relationship of stress-strain, other test methods mainly carry out test assessment in terms of the crystallized ability of material, for building
The constitutive relationship of stress-strain of vertical material is without effect.
In the practical application of thin metal foil, if it is possible to which establishing accurate material constitutive relation model then can be more preferable
Ground meets numerical simulation requirements of one's work, greatly improves the reliability of design analysis.Because one directional tensile test represent just material
A kind of load path of material, it is that not enough sufficiently hydraulic bulge test solves material etc. in the actual application of material
The test of constitutive relationship of stress-strain under biaxial tension stress state, material stress-strain model under plane strain state
Need to be tested using wide plate stretching or cross stretching, but the enforcement difficulty of wide plate stretching and cross stretching is higher, and recipient
The accuracy of load-deformation curve is also unsatisfactory obtained by the limitation of method.
Existing plane strain extension (PSE) method mainly has wide plate stretching and cross stretching.Wide plate stretching is a kind of approximate
Plane strain extension (PSE) method, the wider closer plane strain tension state of sample, but the survey of clamping and the strain of sample
It is higher to measure difficulty, it is also high to the tonnage demand of testing machine.Cross stretching is a more suitable variable strain regime stretching examination
Proved recipe method, available for from simple tension to the test for waiting the differently strained path status such as biaxial tension, but cross tensile sample
Prepare it is cumbersome, and stress and strain be also difficult to it is accurate corresponding.
The content of the invention
The present invention is in view of the deficiency of existing sheet metal plane loading method of testing, it is proposed that a kind of based on the flat of pipe stretching
Face strained tensile test method, this method can overcome to a certain extent existing plane strain extension (PSE) method some not
Foot part.
What the present invention was realized in：
A kind of plane strain extension (PSE) method, including：
Step 1: experiment is made into pipe sample with metal sheet using technologies such as laser weldings, the length of pipe is L, internal diameter
For 2R, sample thickness t；
Step 2: pipe sample both ends are used into plug good seal of the radius for R, wherein one end plug center is provided with fuel feed hole,
Fuel feed hole connects external hydraulic system；
Step 3: sample is clamped on cupping machine using special grasping system, Axial extensometer is loaded onto；
Step 4: carrying out tension test using draw speed V, the data of pulling force sensor and extensometer are recorded during experiment,
Hydraulic system is supplemented oil mass inside pipe sample according to draw speed simultaneously, and supplement speed is π R2V, hydraulic system
Maximum cannot be below (t/R) σ to oil pressurem, σmFor the tensile strength of material；
Step 5: stop experiment after specimen broke and export the load-deformation curve of material, the drawing under plane strain stress state
Experiment is stretched to complete.
Further scheme is：
, it is necessary to which sample and grasping system are isolated using guard box in step 3, hydraulic pressure oil seepage or specimen broke are prevented
Injury caused by oil leak afterwards.
Metal sheet is prepared into certain diameter and the pipe of length by the present invention first（Laser welding can be used）, then will
Tube ends are blocked with cylinder, wherein the perforate of one end cylindrical center and are connected external hydraulic system, are passed through special circular tube clip
Tool held circular pipe sample carries out tension test behind both ends, and the hydraulic system pressure certain to offer inside sample is protected during experiment
Sample internal diameter is held not shrink in drawing process（Considering, safety problem needs sample and grasping system to be carried out during experiment
Closing protection）, material is obtained with plane strain shape by the extensometer on the pulling force sensor and sample of jockey
Stress and strain data under state.
Tensile property of the sheet metal under plane strain stress state can be entered using the plane strain extension (PSE) method
Row test, so as to obtain the load-deformation curve under the material strain paths, the foundation for steel sheet material model provides actual measurement
Performance data, it simultaneously can be used for crystallized ability of the assessment material under plane strain state.
Brief description of the drawings
Fig. 1 is the plane strain extension (PSE) schematic diagram of the embodiment of the present invention.
Embodiment
The present invention is further illustrated with specific embodiment below in conjunction with the accompanying drawings.
The present invention main embodiment be：
The preparation of plane strain extension (PSE) hydraulic system, grasping system and accessory；
The processing of test pipe tensile sample；
The Control ＆ data acquisition of plane strain extension (PSE) process；
The processing of test data and outcome evaluation.
More specific description is as follows：
A kind of plane strain extension (PSE) method, including：
Step 1: experiment is made into pipe sample 1 with metal sheet using technologies such as laser weldings, the length of pipe is L, internal diameter
For 2R, sample thickness t；
Step 2: pipe sample both ends are used into plug good seal of the radius for R, wherein one end plug 2 is plug not with holes, separately
One end plug is plug 3 with holes, and center is provided with fuel feed hole, fuel feed hole connection external hydraulic system 6；
Step 3: sample is clamped on cupping machine using special grasping system 5, load onto Axial extensometer 4, it is necessary to
Sample and grasping system are isolated using guard box, prevent injury caused by oil leak after hydraulic pressure oil seepage or specimen broke；
Step 4: carrying out tension test using draw speed V, the data of pulling force sensor and extensometer are recorded during experiment,
Hydraulic system is supplemented oil mass inside pipe sample according to draw speed simultaneously, and supplement speed is π R2V, hydraulic system
Maximum cannot be below (t/R) σ to oil pressurem, σmFor the tensile strength of material；
Step 5: stop experiment after specimen broke and export the load-deformation curve of material, the drawing under plane strain stress state
Experiment is stretched to complete.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiments of the present invention are simultaneously not restricted to the described embodiments, it should be appreciated that people in the art
Member can be designed that a lot of other modifications and embodiment, and these modifications and embodiment will fall in principle disclosed in the present application
Within scope and spirit.
Claims (3)
- A kind of 1. plane strain extension (PSE) method, it is characterised in that including：Step 1: experiment is made into pipe sample with metal sheet, the length of pipe is L, internal diameter 2R, sample thickness t；Step 2: pipe sample both ends are used into plug good seal of the radius for R, wherein one end plug center is provided with fuel feed hole, Fuel feed hole connects external hydraulic system；Step 3: sample is clamped on cupping machine using special grasping system, Axial extensometer is loaded onto；Step 4: carrying out tension test using draw speed V, the data of pulling force sensor and extensometer are recorded during experiment, Hydraulic system is supplemented oil mass inside pipe sample according to draw speed simultaneously, and supplement speed is π R2V, hydraulic system Maximum cannot be below (t/R) σ to oil pressurem, σmFor the tensile strength of material；Step 5: stop experiment after specimen broke and export the load-deformation curve of material, the drawing under plane strain stress state Experiment is stretched to complete.
- 2. plane strain extension (PSE) method according to claim 1, it is characterised in that：In step 3, sample and grasping system are isolated using guard box, leaked after preventing hydraulic pressure oil seepage or specimen broke Injury caused by oil.
- 3. plane strain extension (PSE) method according to claim 1, it is characterised in that：It is that experiment is made by pipe sample with metal sheet by laser welding technology in step 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710833193.2A CN107727505A (en) | 2017-09-15 | 2017-09-15 | A kind of plane strain extension (PSE) method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710833193.2A CN107727505A (en) | 2017-09-15 | 2017-09-15 | A kind of plane strain extension (PSE) method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107727505A true CN107727505A (en) | 2018-02-23 |
Family
ID=61206925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710833193.2A Pending CN107727505A (en) | 2017-09-15 | 2017-09-15 | A kind of plane strain extension (PSE) method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107727505A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109107393A (en) * | 2018-11-07 | 2019-01-01 | 温州莲华环保科技有限公司 | A kind of forward osmosis membrane performance test apparatus and its test method |
| CN110146378A (en) * | 2019-05-31 | 2019-08-20 | 中铁大桥科学研究院有限公司 | A kind of cement-based material is uniaxially stretched measurement device and measuring method |
| CN110274830A (en) * | 2019-04-18 | 2019-09-24 | 防灾科技学院 | A kind of drift-sand Modified soil tensile characteristics test macro |
| CN112362508A (en) * | 2020-09-30 | 2021-02-12 | 中汽研（天津）汽车工程研究院有限公司 | Low-cycle strain fatigue control method for thin plate |
| CN112362493A (en) * | 2020-09-30 | 2021-02-12 | 中汽研（天津）汽车工程研究院有限公司 | Control method for hot compression test of thin plate |
| CN113567238A (en) * | 2021-06-25 | 2021-10-29 | 鞍钢股份有限公司 | Uniaxial and biaxial tension curve processing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201609731U (en) * | 2009-12-25 | 2010-10-20 | 中国科学院金属研究所 | Simple pipe hydraulic bulging device |
| CN103033421A (en) * | 2012-12-28 | 2013-04-10 | 哈尔滨工业大学 | Bulging experiment device for directly testing mechanical property of pipe |
| CN103267689A (en) * | 2013-05-07 | 2013-08-28 | 桂林电子科技大学 | Pipe hydrobulging forming limit diagram construction method and test apparatus |
| CN104007017A (en) * | 2014-05-23 | 2014-08-27 | 北京理工大学 | Metal pipe stretching device |
| CN105300802A (en) * | 2015-10-20 | 2016-02-03 | 哈尔滨工业大学 | Bidirectional stress state stress-strain measurement device and method for thin-walled tube |
| CN106018119A (en) * | 2016-07-18 | 2016-10-12 | 西安交通大学 | Stretching stress testing machine used in high-temperature and high-pressure hydrogen environment |
-
2017
- 2017-09-15 CN CN201710833193.2A patent/CN107727505A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201609731U (en) * | 2009-12-25 | 2010-10-20 | 中国科学院金属研究所 | Simple pipe hydraulic bulging device |
| CN103033421A (en) * | 2012-12-28 | 2013-04-10 | 哈尔滨工业大学 | Bulging experiment device for directly testing mechanical property of pipe |
| CN103267689A (en) * | 2013-05-07 | 2013-08-28 | 桂林电子科技大学 | Pipe hydrobulging forming limit diagram construction method and test apparatus |
| CN104007017A (en) * | 2014-05-23 | 2014-08-27 | 北京理工大学 | Metal pipe stretching device |
| CN105300802A (en) * | 2015-10-20 | 2016-02-03 | 哈尔滨工业大学 | Bidirectional stress state stress-strain measurement device and method for thin-walled tube |
| CN106018119A (en) * | 2016-07-18 | 2016-10-12 | 西安交通大学 | Stretching stress testing machine used in high-temperature and high-pressure hydrogen environment |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109107393A (en) * | 2018-11-07 | 2019-01-01 | 温州莲华环保科技有限公司 | A kind of forward osmosis membrane performance test apparatus and its test method |
| CN110274830A (en) * | 2019-04-18 | 2019-09-24 | 防灾科技学院 | A kind of drift-sand Modified soil tensile characteristics test macro |
| CN110146378A (en) * | 2019-05-31 | 2019-08-20 | 中铁大桥科学研究院有限公司 | A kind of cement-based material is uniaxially stretched measurement device and measuring method |
| CN110146378B (en) * | 2019-05-31 | 2021-08-06 | 中铁大桥科学研究院有限公司 | Uniaxial tension measuring device and method for cement-based material |
| CN112362508A (en) * | 2020-09-30 | 2021-02-12 | 中汽研（天津）汽车工程研究院有限公司 | Low-cycle strain fatigue control method for thin plate |
| CN112362493A (en) * | 2020-09-30 | 2021-02-12 | 中汽研（天津）汽车工程研究院有限公司 | Control method for hot compression test of thin plate |
| CN113567238A (en) * | 2021-06-25 | 2021-10-29 | 鞍钢股份有限公司 | Uniaxial and biaxial tension curve processing method |
| CN113567238B (en) * | 2021-06-25 | 2024-05-14 | 鞍钢股份有限公司 | Uniaxial biaxial stretching curve processing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107727505A (en) | A kind of plane strain extension (PSE) method | |
| CN103969121B (en) | System and method for detecting elastic strain energy index | |
| CN104849153B (en) | A kind of test device of underground space spallation strength and the application of the device | |
| CN103674707A (en) | System and method for measuring direct tensile strength and deformation of rock | |
| CN102410957B (en) | Test sample and method for testing performance parameters of pipe under complex stress state | |
| CN104949884A (en) | Method for directly measuring coefficient of normal anisotropy in circumferential direction of tubular material | |
| CN102901669A (en) | 8-analogue-shaped soil uniaxial tensile tester | |
| CN106644711A (en) | Test method for uniaxial constitutive relation of ductile material | |
| Gioielli et al. | Large-scale testing methodology to measure the influence of pressure on tensile strain capacity of a pipeline | |
| CN110333144A (en) | A method of measurement high tenacity alloy high-temp fracture toughness JIC | |
| CN107589001A (en) | A kind of material impact experimental method | |
| CN104568576B (en) | A kind of clamp method that mechanical property tests are carried out to metal material | |
| CN108956265A (en) | A kind of yield criterion and its method for building up of nylon material tension and torsion | |
| CN102004819A (en) | Method for determining constitutive parameters of butt welded pipe welding seam in biaxial stress state | |
| CN105806702B (en) | For the fixture on horizontal the steel strand relaxation test machine | |
| CN206902781U (en) | The detection means of anchor pole internal force exterior measuring | |
| CN110579413A (en) | variable-rod-diameter Hopkinson pressure bar experiment device and method | |
| CN103335899B (en) | Method and device for determining uniform ductility of hi-grade steel pipeline steel pipe | |
| CN105043895B (en) | The bent toughness method of testing and its device of fiber concrete component | |
| CN202195942U (en) | Detection device of penetration degree of VVT oil hole of camshaft | |
| CN105806707A (en) | High-speed tensile test device for battery film material | |
| DE102007010426B4 (en) | Test device for samples under impact load | |
| CN106596257A (en) | Anchorage device, clamp and connector static load anchoring test total strain measurement apparatus and method thereof | |
| Shimamoto et al. | The development of a servo dynamic biaxial loading device | |
| Sumita et al. | Measurement and material modeling of biaxial work-hardening behavior for pure titanium sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180223 |