CN110108464A - A kind of dog-bone style weakening support construction testing machine vibration absorber - Google Patents
A kind of dog-bone style weakening support construction testing machine vibration absorber Download PDFInfo
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- CN110108464A CN110108464A CN201910415931.0A CN201910415931A CN110108464A CN 110108464 A CN110108464 A CN 110108464A CN 201910415931 A CN201910415931 A CN 201910415931A CN 110108464 A CN110108464 A CN 110108464A
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- support
- dog
- weakening
- testing machine
- bone
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/06—Stiffness
- F16F2228/066—Variable stiffness
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of dog-bone style weakening support construction testing machine vibration absorbers, belong to vibration damping control field, and vibration absorber includes to weaken section support, stretch section support, junction steel plate and bolt.Dog-bone style weakening is arranged between structure testing machine lower beam and basis to support, dog-bone style weakening support is arranged symmetrically in around test specimen；Dog-bone style weakening support is supported by weakening section supports two parts to form by junction steel plate and bolt combination with stretch section；Dog-bone style weakening support and the common stress of test specimen, until load is downloaded；Force snesor is arranged in test specimen lower end, for measuring test specimen load.Present invention setting dog-bone style weakening during large-sized structure experiment machine is tested supports, can be to avoid the vibration problem of testing machine caused by the brittle break test specimen and surrounding enviroment.The present invention has the advantages that artificially to control surrender, economical and practical.
Description
Technical field
The present invention relates to a kind of dog-bone style weakenings to support testing machine vibration absorber, is using suitable for large-sized structure experiment machine
Body vibration and ambient vibration caused by destroying in the process because of brittleness test specimen, belong to vibration damping control field.
Background technique
In building structure increasingly enlarged today, large-sized structure experiment machine in building field using more and more extensive,
Have become colleges and universities, the essential testing equipment of R&D institution.Large-sized structure experiment machine is in use because brittleness is tried
Part destroys caused testing machine and the vibration of Adjacent Buildings is especially apparent, and strong vibration can cause problems, such as damages
Testing machine self performance；The safety of hazard test machine periphery staff and building；During large-scale full-scale specimen is because of test
The judder of generation and cannot complete；Influence the accuracy of test result.Typical large-sized structure experiment machine both at home and abroad, usually
Vibration damping is carried out using on basis and the setting modes such as spring damping element and viscous damper in rack.For built large size
Structure testing machine, traditional vibration isolation means are difficult to carry out, and higher cost.Therefore in the case where not changing testing machine structure,
It realizes the vibration generated during reducing test, is the trend of structural test technology development.
Dog-bone style weakening support it is characterized in that, weakened on certain section of edge of a wing of support, be supported on dog-bone style weakening
The surrender of feature position is equivalent to and plays the role of a fuse in entire support, i.e., by weakening section support protection elasticity
Section support is not destroyed.Its defect small for support plasticity, reasonably weakens support, improves the ductility of support,
Reduce the strength and stiffness of support.Realize that by surrender control, key is to design arc-shaped dog bone type branch in rational position
Support the size of weakened part.
China Patent No. CN201410001488.X, publication date on April 23rd, 2014, a kind of entitled peace of innovation and creation
Large-sized structure experiment machine equipped with vibration absorber, this application patent disclose a kind of between the upper and lower crossbeam of structure testing machine
The testing machine of locking device is installed.Disadvantage is that locking device is arranged in the upper and lower crossbeam of testing machine, there is certain vibration damping
Effect, but vibration damping range is relatively limited to, and testing machine can still have certain oscillation phenomenon when brittleness test specimen destroys, therefore vibration damping fills
It sets and is preferably arranged in around loading specimen.
The advantage of the invention is that the surrender position of the controllable support of dog-bone style weakening support, economical and practical, testing machine is whole
Body effectiveness in vibration suppression is preferable, and disadvantage is that dog-bone style weakening support can share the load of testing machine application, and occupies test space.
Summary of the invention
To reduce the vibration that large-sized structure experiment machine generates in use, the invention proposes a kind of dog-bone style weakenings
Support construction testing machine vibration absorber.
To achieve the above object, design scheme of the invention is as follows: a kind of dog-bone style weakening support construction testing machine vibration damping
Device, dog-bone style weakening support 1 include to weaken section support 6, stretch section support 7, junction steel plate 8 and bolt 9；Its feature exists
In: it supports 7 upper/lower terminals to be welded to connect steel plate 8 with stretch section weakening section support 6, is equipped with bolt hole on junction steel plate 8,
The junction steel plate 8 weakened between section support 6 and stretch section support 7 is combined by bolt 9；Weakening section support 6 being capable of people
Industry control system surrenders position；Stretch section support 7 is made of the various sizes of support of multistage.Weakening section supports the width of 6 both ends section big
In the width of interlude.
The dog-bone style weakening support 1 is arranged in around test specimen 4, drives testing machine lower beam 3 right by load cylinder
Test specimen 4 is further applied load, and makes dog-bone style weakening support 1 and the common stress of test specimen 4, after 4 compression damage of test specimen, dog-bone style weakening support
1 can continue to undertake the load that testing machine is applied, until unloading completely；Dog-bone style weakening support 1 is arranged in basis with test specimen 4
Between 2 and testing machine lower beam 3；Using being arranged symmetrically, quantity is 2 sets or 4 sets for dog-bone style weakening support 1；Force snesor 5 is arranged
In the upper end or lower end of test specimen 4.
The material selection steel or concrete of the weakening section support 6 and stretch section support 7, shape select H-shaped, C
Shape, circle or rectangle.
The present invention adds dog-bone style weakening support damping device on large-sized structure experiment machine, can adjust according to actual needs
Whole rigidity and height are used for the vibration damping of large-sized structure experiment machine, and this method haves no need to change the original structure of testing machine, has
It is easy the advantages such as implementation, economical and practical, Ke Xunhuanliyong.
Detailed description of the invention
Fig. 1 is a kind of dog-bone style weakening support construction testing machine vibration absorber schematic diagram proposed by the present invention.
Fig. 2 is a kind of dog-bone style weakening support elevational schematic view proposed by the present invention.
Fig. 3 is stretch section support stepwise schematic views proposed by the present invention.
In figure: 1, dog-bone style weakening supports, 2, basis, 3, testing machine lower beam, 4, test specimen, 5, force snesor, 6, weakening
Section support, 7, stretch section support, 8, junction steel plate, 9, bolt.
Specific embodiment
Invention is further explained with reference to the accompanying drawings and detailed description.
The pilot system of Fig. 1 includes dog-bone style weakening support 1, basis 2, testing machine lower beam 3, test specimen 4 and power sensing
Device；It is characterized by: dog-bone style weakening support 1 and test specimen 4 are placed between basis 2 and testing machine lower beam 3, force snesor 5
It is placed in 4 lower end of test specimen, forms a pilot system；Testing machine lower beam 3 is driven to apply lotus to test specimen 4 by load cylinder
It carries, makes dog-bone style weakening support 1 and the common stress of test specimen 4, after the destruction of test specimen 4, dog-bone style weakening support 1 continues to undertake lotus
It carries, the potential energy for storing testing machine gradually unloads, and reaches effectiveness in vibration suppression.
The dog-bone style weakening support 1 is symmetrically positioned about in test specimen 4, and quantity is 2 sets or 4 sets, dog-bone style weakening
Support 1 and test specimen 4 are arranged between basis 2 and testing machine lower beam 3.
Dog-bone style weakening supports 1 point to support 7 two parts to weaken section support 6 with stretch section, is weakening section support 6 and elasticity
The junction steel plate 8 of section support 7 upper and lower ends welding punching, is combined by bolt 9.Stretch section support 7 is it is characterized in that can
It is made of the various sizes of support of multistage.
1 global stiffness value of dog-bone style weakening support is adjusted according to the rigidity of test specimen 4, is weakened section and is supported 6 bend by pressure,
Stretch section support 7 is reusable.
Load suffered by test specimen 4 is measured by force snesor 5, force snesor 5 it is characterized in that can be placed in 4 upper end of test specimen or
Lower end.
The junction steel plate 8 that dog-bone style weakening support 1 is welded, it is characterised in that firm welding, and keep junction steel plate 8
Horizontality.
Claims (4)
1. a kind of dog-bone style weakening support construction testing machine vibration absorber, it is characterised in that: dog-bone style weakening support (1) is arranged in
Around test specimen (4), it is further applied load by load cylinder driving testing machine lower beam (3) to test specimen (4), supports dog-bone style weakening
(1) with test specimen (4) common stress, after test specimen (4) compression damage, dog-bone style weakening support (1) can continue to undertake testing machine institute
The load of application, until unloading completely；Dog-bone style weakening support (1) and test specimen (4) is arranged in basic (2) and testing machine lower beam
(3) between；Using being arranged symmetrically, quantity is 2 sets or 4 sets for dog-bone style weakening support (1)；Force snesor (5) is arranged in test specimen (4)
Upper end or lower end.
2. a kind of dog-bone style weakening support construction testing machine vibration absorber according to claim 1, it is characterised in that: dog bone
It includes to weaken section support (6), stretch section support (7), junction steel plate (8) and bolt (9) that formula, which weakens support (1),；Weakening section
Support (6) and stretch section support (7) upper/lower terminal are welded to connect steel plate (8), and junction steel plate is equipped with bolt hole on (8), weakens
Junction steel plate (8) between section support (6) and stretch section support (7) is combined by bolt (9)；Weaken section support (6)
It being capable of manual control surrender position；Stretch section supports (7) to be made of the various sizes of support of multistage；Dog-bone style weakening supports (1)
The width of both ends section is greater than the width of interlude.
3. a kind of dog-bone style weakening support construction testing machine vibration absorber according to claim 1, it is characterised in that: described
Weakening section support (6) and stretch section support (7) material selection steel or concrete, shape selection H-shaped, C-shaped, circle or
Person's rectangle.
4. a kind of dog-bone style weakening support construction testing machine vibration absorber according to claim 1, it is characterised in that: dog bone
Formula weakens the junction steel plate (8) that support (1) is welded and keeps horizontality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910415931.0A CN110108464A (en) | 2019-05-19 | 2019-05-19 | A kind of dog-bone style weakening support construction testing machine vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910415931.0A CN110108464A (en) | 2019-05-19 | 2019-05-19 | A kind of dog-bone style weakening support construction testing machine vibration absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110108464A true CN110108464A (en) | 2019-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910415931.0A Pending CN110108464A (en) | 2019-05-19 | 2019-05-19 | A kind of dog-bone style weakening support construction testing machine vibration absorber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113032878A (en) * | 2021-03-24 | 2021-06-25 | 贵州电网有限责任公司 | Anti-icing and disaster-reducing design method capable of repairing iron tower |
Citations (6)
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|---|---|---|---|---|
| CN101100877A (en) * | 2007-07-31 | 2008-01-09 | 北京工业大学 | Beam end weakened replacement type steel frame beam shock proof node |
| JP2009264912A (en) * | 2008-04-24 | 2009-11-12 | Honda Motor Co Ltd | Inspection system of differential limiting device and its method |
| CN201795963U (en) * | 2010-09-10 | 2011-04-13 | 胡少伟 | System for testing fracture of concrete |
| CN102288485A (en) * | 2011-05-12 | 2011-12-21 | 河海大学 | Large-sized fully graded concrete axial-tension tester |
| CN103969123A (en) * | 2014-04-09 | 2014-08-06 | 北京工业大学 | Combined structural test loading device |
| CN206737119U (en) * | 2017-05-08 | 2017-12-12 | 江南大学 | A kind of replaceable Prefabricated Concrete frame joint of beam-ends with elliptical aperture splicing steel plate |
-
2019
- 2019-05-19 CN CN201910415931.0A patent/CN110108464A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101100877A (en) * | 2007-07-31 | 2008-01-09 | 北京工业大学 | Beam end weakened replacement type steel frame beam shock proof node |
| JP2009264912A (en) * | 2008-04-24 | 2009-11-12 | Honda Motor Co Ltd | Inspection system of differential limiting device and its method |
| CN201795963U (en) * | 2010-09-10 | 2011-04-13 | 胡少伟 | System for testing fracture of concrete |
| CN102288485A (en) * | 2011-05-12 | 2011-12-21 | 河海大学 | Large-sized fully graded concrete axial-tension tester |
| CN103969123A (en) * | 2014-04-09 | 2014-08-06 | 北京工业大学 | Combined structural test loading device |
| CN206737119U (en) * | 2017-05-08 | 2017-12-12 | 江南大学 | A kind of replaceable Prefabricated Concrete frame joint of beam-ends with elliptical aperture splicing steel plate |
Non-Patent Citations (3)
| Title |
|---|
| 同济大学 编: "《一级注册结构工程师基础考试复习教程》", 31 March 2010 * |
| 王云: "梁柱狗骨式节点连接探讨", 《江西建材》 * |
| 韩静: "结构试验机振动机理与减振措施的数值模拟", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113032878A (en) * | 2021-03-24 | 2021-06-25 | 贵州电网有限责任公司 | Anti-icing and disaster-reducing design method capable of repairing iron tower |
| CN113032878B (en) * | 2021-03-24 | 2023-06-02 | 贵州电网有限责任公司 | Design method for repairable iron tower anti-icing disaster reduction |
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Application publication date: 20190809 |