CN107123336A - A kind of high order mode vibration testing device for being used to impart knowledge to students - Google Patents
A kind of high order mode vibration testing device for being used to impart knowledge to students Download PDFInfo
- Publication number
- CN107123336A CN107123336A CN201710520020.5A CN201710520020A CN107123336A CN 107123336 A CN107123336 A CN 107123336A CN 201710520020 A CN201710520020 A CN 201710520020A CN 107123336 A CN107123336 A CN 107123336A
- Authority
- CN
- China
- Prior art keywords
- plate
- students
- high order
- testing device
- order mode
- 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
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B19/00—Teaching not covered by other main groups of this subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H13/00—Measuring resonant frequency
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Entrepreneurship & Innovation (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
A kind of high order mode vibration testing device for being used to impart knowledge to students, the experimental provision is that left plate and right plate are fixed on bottom plate, by entablature be fixed between left plate and right plate and with left plate and the hanging of right plate, middle cross beam is fixed between left plate and right plate and in the lower section of entablature, sill is fixed between left plate and right plate and in the lower section of middle cross beam, and column is fixed on bottom plate.This experimental provision, which is used to impart knowledge to students, can measure the flexibility matrix and mass matrix needed for structural theory intrinsic frequency is calculated, and calculate the theoretical intrinsic frequency of structure；Intrinsic frequency of the structure under free and forced vibration can be measured, and then is compared with theoretical intrinsic frequency；Vibration shape during mesomerism can also be observed simultaneously, intuitively improve understanding of the student to vibration.
Description
Technical field
The present invention relates to a kind of structural natural frequencies measurement apparatus, particularly a kind of reality for high order mode vibration of imparting knowledge to students
Experiment device.
Background technology
Oscillation phenomenon is ubiquitous in mechanical engineering field, and either normally operation or equipment have failure to equipment,
It will be showed by vibration mode.Some vibrations are favourable, can be used；Most of vibrations be then to equipment not
Profit, rate of occurrence of equipment failure can be increased；Vibration can also be supplied to user as diagnostic message, make people be easy to understanding to set
Standby running situation.《Reformation of Mechanical Vibration》It is a specialized courses of subjects of mechanical engineering, it has certain theoretical depth, it is special
It is not for the vibrational system of high order mode, to explain student's indigestion and the palm by learning knowledge of textbook and classroom merely
Hold the oscillation phenomenon, it is important that student is by testing the training with practice.
Current vibration experimental provision is mainly equivalent to one simply supported beam in a first order mode system, structure, i.e., one is horizontal
The two ends of beam by two upright supports, and connected mode is is fixedly connected with, and column is fixedly connected with mode with bottom plate also use and is connected；Swash
The device that shakes is installed on the lower section of crossbeam, and it is to be fixedly connected with the connected mode of crossbeam and bottom plate.The weak point of the device is
It is merely capable of measuring out first natural frequency of the structure under free and forced vibration, it is impossible to which the theory for measuring structure is consolidated
There is frequency, therefore can not be connected well with theory, and existing device is unable to vibration shape when observation structure resonates, it is right
For school instruction, one high order mode vibration testing device for being used to impart knowledge to students of design is very important.
The content of the invention
The problem of being existed based on above-mentioned prior art, the present invention provide one kind can measure structural theory intrinsic frequency, from
Intrinsic frequency under vibration and forced vibration, and the high order mode for being used to impart knowledge to students of the observation structure vibration shape is shaken in mesomerism
Dynamic experimental provision.
The technical proposal of the invention is realized in this way.
A kind of high order mode vibration testing device for being used to impart knowledge to students, including bottom plate, left plate, right plate, entablature, middle horizontal stroke
Beam, sill, column and stroboscope；It is characterized in that：The left plate and the right plate are fixed on the bottom plate, described
Entablature is fixed between the left plate and the right plate, and with the left plate and the hanging of the right plate,
Wherein the middle cross beam is fixed between the left plate and the right plate, and in the lower section of the entablature, the sill is consolidated
It is scheduled between the left plate and the right plate, and in the lower section of wherein the middle cross beam, the column is fixed on the bottom plate,
Constitute the high order mode vibration testing device.
The present invention is provided with some through holes on the left plate and the right plate, if being provided with the left plate
Dry through hole, link is provided with the right plate.
The present invention is internally provided with chock in the entablature, middle cross beam and sill, and the chock is by nut and welding plate
Weld and constitute.
The present invention is provided with digital display dial gauge on the left plate, and counterweight is provided with the link.
The present invention is provided with sensor I on the left plate, and the sensor I is connected with Acquisition Instrument.
The present invention is provided with sensor II on the left plate, and the sensor II is connected with Acquisition Instrument, on the left side
Vibrator is provided with side plate, the vibrator is connected with signal generator.
The present invention is provided with vibrator on the left plate, and the vibrator is connected with signal generator.
The present invention is provided with flexibility method in the high order mode vibration testing device and asks intrinsic frequency and principal mode application journey
Sequence.
The present invention first, can measure structural theory relative to the high order mode vibration testing device for being currently used for teaching
Intrinsic frequency calculates required flexibility matrix and mass matrix, can calculate the theoretical intrinsic frequency of structure；Secondly, it can survey
High-order intrinsic frequency of the structure under free and forced vibration is taken, and then is compared with theoretical intrinsic frequency；Simultaneously, additionally it is possible to
It was observed that vibration shape during mesomerism, further increases understanding of the student to vibration.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the structural representation of left plate in Fig. 1.
Fig. 3 is the structural representation of right plate in Fig. 1.
Fig. 4 is the overlooking the structure diagram of right plate in Fig. 3.
Fig. 5 is entablature, middle cross beam, Lower Crossbeam Structure schematic diagram in Fig. 1.
Fig. 6 is entablature, middle cross beam, Lower Crossbeam Structure side view in Fig. 4.
Fig. 7 is chock structural representation in Fig. 5.
Fig. 8 is the use configuration state figure of claim 4.
Fig. 9 is the use configuration state figure of claim 5.
Figure 10 is the use configuration state figure of claim 6.
Figure 11 is the use configuration state figure of claim 7.
Figure 12 is that flexibility method of the present invention calculates theoretical intrinsic frequency Application Program Interface.
In figure：1：Bottom plate；2：Left plate；3：Right plate；4：Entablature；5：Middle cross beam；6：Sill；7：Column；8：It is logical
Hole；9：Link；10：Chock；11：Nut；12：Welding plate；13：Digital display dial gauge；14：Counterweight；15：Sensor I；16：Acquisition Instrument；
17：Second sensor II；18：Acquisition Instrument；19：Vibrator；20：Signal generator；21：Stroboscope；22：Vibrator；23：It is logical
Hole；24：Signal generator.
Embodiment
The embodiment to the present invention is further illustrated below in conjunction with the accompanying drawings.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1, the high order mode vibration testing device for teaching, including bottom plate 1, left plate 2, right side are implemented
Plate 3, entablature 4, middle cross beam 5, sill 6, column 7, the left plate 2 and the right plate 3 are fixed on the bottom plate 1,
As shown in drawings, the entablature 4 is fixed between the left plate 2 and the right plate 3 in direction, and the top of entablature with
The hanging of left plate 2 and right plate 3, wherein the middle cross beam 5 is fixed between the left plate 2 and the right plate 3, and
The lower section of the entablature 4, the sill 6 is fixed between the left plate 2 and the right plate 3, and in wherein the middle cross
The lower section of beam 5, the distance between three crossbeams are equal, and the column 7 is fixed on the bottom plate 1.
As shown in accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, it is provided with the left plate 2 and the right plate 3 and crossbeam fixed bit
Corresponding through hole 8 is put, for fixing three crossbeams；Some through holes 23 are provided with described left plate 2, for installing exciting
Device；Link 9 is provided between the through hole of the right plate 3, for hanging counterweight 14.
As shown in accompanying drawing 5, accompanying drawing 6 and accompanying drawing 7, chock is internally provided with the entablature 4, middle cross beam 5 and sill 6
10, the connection for three crossbeams and left side plate；The chock 10 is welded by nut 11 and welding plate 12.
As shown in Figure 8, digital display dial gauge 13 is provided with the left plate 2, the deformation for measuring structure, and then
Obtain the flexibility matrix of structure；Counterweight 14 is provided with described link 9, for being deformed structure.
As shown in Figure 9, sensor 15 is provided with the left plate 2, the sensor 15 is connected with Acquisition Instrument 16,
For measuring vibrational waveform during free vibration of structures, and then analyze the intrinsic frequency under free vibration of structures.
As shown in Figure 10, sensor 17 is provided with the left plate 2, the sensor 17 connects with Acquisition Instrument 18
Connect, vibrator 19 is provided with the left plate 2, the vibrator 19 is connected with signal generator 20, for producing structure
Raw forced vibration, measures vibrational waveform during structure forced vibration, and then analyze the intrinsic frequency under structure forced vibration.
As shown in Figure 11, including stroboscope 21, vibrator 22, the vibrator are provided with described left plate 2
22 are connected with signal generator 24, for making structure produce resonance, vibration shape when observation structure resonates.
As shown in Figure 12, the flexibility matrix measured and mass matrix be input to " flexibility method asks intrinsic frequency and master to shake
In the corresponding square frame of type " application software, click on and calculate, you can calculate theoretical each rank eigenfrequncies and vibration models of structure.
The implementation of the above-mentioned high order mode vibration testing device for being used to impart knowledge to students, in for teaching process, intuitively simply
High order mode vibration experiment is demonstrated by, student is very clear, have received positive teaching efficiency, practicality proves that the device can be surveyed
The intrinsic frequency under the theoretical intrinsic frequency of structure, free and forced vibration is taken, and observation structure shakes in mesomerism
Type.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements done within refreshing and principle etc., should be included in the scope of the protection.
Claims (8)
1. a kind of high order mode vibration testing device for being used to impart knowledge to students, including bottom plate, left plate, right plate, entablature, middle horizontal stroke
Beam, sill, column and stroboscope；It is characterized in that：The left plate（2）With the right plate（3）It is fixed on the bottom plate
（1）On, the entablature（4）It is fixed on the left plate（2）With the right plate（3）Between, and with the left plate（2）With
The right plate（3）Hanging, wherein the middle cross beam（5）It is fixed on the left plate（2）With the right plate（3）Between,
And in the entablature（4）Lower section, the sill（6）It is fixed on the left plate（2）With the right plate（3）Between,
And in wherein the middle cross beam（5）Lower section, the column（7）It is fixed on the bottom plate（1）On, constitute the high order mode vibration real
Experiment device.
2. the high order mode vibration testing device according to claim 1 for being used to impart knowledge to students, it is characterised in that：In the left side
Plate（2）With the right plate（3）On be provided with some through holes（8）, in the left plate（2）On be provided with some through holes（23）,
In the right plate（3）On be provided with link（9）.
3. the high order mode vibration testing device according to claim 1 for being used to impart knowledge to students, it is characterised in that：It is horizontal described
Beam（4）, middle cross beam（5）And sill（6）It is internally provided with chock（10）, the chock（10）By nut（11）And welding plate（12）
It is welded.
4. the high order mode vibration testing device according to claim 1 for being used to impart knowledge to students, it is characterised in that：In the left side
Plate（2）On be provided with digital display dial gauge（13）, in the link（9）On be provided with counterweight（14）.
5. the high order mode vibration testing device according to claim 1 for being used to impart knowledge to students, it is characterised in that：In the left side
Plate（2）On be provided with sensor I（15）, the sensor I（15）With Acquisition Instrument（16）Connection.
6. the high order mode vibration testing device according to claim 1 for being used to impart knowledge to students, it is characterised in that：In the left side
Plate（2）On be provided with sensor II（17）, the sensor II（17）With Acquisition Instrument（18）Connection, in the left plate（2）On
It is provided with vibrator（19）, the vibrator（19）With signal generator（20）Connection.
7. the high order mode vibration testing device according to claim 1 for being used to impart knowledge to students, it is characterised in that：In the left side
Plate（2）On be provided with vibrator（22）, the vibrator（22）With signal generator（24）Connection.
8. the high order mode vibration testing device according to claim 1 for being used to impart knowledge to students, it is characterised in that：The high-order
Vibration shape vibration testing device is provided with the application software that flexibility method asks intrinsic frequency and principal mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710520020.5A CN107123336A (en) | 2017-06-30 | 2017-06-30 | A kind of high order mode vibration testing device for being used to impart knowledge to students |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710520020.5A CN107123336A (en) | 2017-06-30 | 2017-06-30 | A kind of high order mode vibration testing device for being used to impart knowledge to students |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107123336A true CN107123336A (en) | 2017-09-01 |
Family
ID=59720276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710520020.5A Pending CN107123336A (en) | 2017-06-30 | 2017-06-30 | A kind of high order mode vibration testing device for being used to impart knowledge to students |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107123336A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109948174A (en) * | 2019-01-10 | 2019-06-28 | 太原理工大学 | The quality allocation method of concentrated quality method Computational frame structural natural frequencies |
| CN113192395A (en) * | 2021-05-07 | 2021-07-30 | 哈尔滨工业大学 | Can assemble multi-functional shearing type frame construction dynamics experiment model device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2651869Y (en) * | 2003-08-15 | 2004-10-27 | 南京师范大学 | Demonstration device for forced vibration and resonance-vibration |
| CN1746652A (en) * | 2004-09-08 | 2006-03-15 | 广州大学 | Structural dynamic characteristic demonstration model |
| CN201590178U (en) * | 2009-12-29 | 2010-09-22 | 上海市虹口区崇明路小学 | Resonance demonstration apparatus |
| CN201859573U (en) * | 2010-08-19 | 2011-06-08 | 陈廷 | Teaching aid for demonstrating resonance |
| CN105243934A (en) * | 2015-10-27 | 2016-01-13 | 大连理工大学 | Teaching experiment device making force method visualized |
| CN204990890U (en) * | 2015-08-19 | 2016-01-20 | 许正博 | Demonstration object vibration frequency's teaching aid |
| CN106448429A (en) * | 2016-09-23 | 2017-02-22 | 大连理工大学 | Multilayer frame teaching experiment model and experiment method thereof |
-
2017
- 2017-06-30 CN CN201710520020.5A patent/CN107123336A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2651869Y (en) * | 2003-08-15 | 2004-10-27 | 南京师范大学 | Demonstration device for forced vibration and resonance-vibration |
| CN1746652A (en) * | 2004-09-08 | 2006-03-15 | 广州大学 | Structural dynamic characteristic demonstration model |
| CN201590178U (en) * | 2009-12-29 | 2010-09-22 | 上海市虹口区崇明路小学 | Resonance demonstration apparatus |
| CN201859573U (en) * | 2010-08-19 | 2011-06-08 | 陈廷 | Teaching aid for demonstrating resonance |
| CN204990890U (en) * | 2015-08-19 | 2016-01-20 | 许正博 | Demonstration object vibration frequency's teaching aid |
| CN105243934A (en) * | 2015-10-27 | 2016-01-13 | 大连理工大学 | Teaching experiment device making force method visualized |
| CN106448429A (en) * | 2016-09-23 | 2017-02-22 | 大连理工大学 | Multilayer frame teaching experiment model and experiment method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109948174A (en) * | 2019-01-10 | 2019-06-28 | 太原理工大学 | The quality allocation method of concentrated quality method Computational frame structural natural frequencies |
| CN113192395A (en) * | 2021-05-07 | 2021-07-30 | 哈尔滨工业大学 | Can assemble multi-functional shearing type frame construction dynamics experiment model device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103808499B (en) | A kind of vibration isolator dynamic stiffness method of testing and device thereof | |
| CN101968405B (en) | Device and method for testing dynamic characteristic of combined surface | |
| CN103175602B (en) | Modal testing system and modal testing method on basis of single-point laser continuous plane-scanning vibration measurement | |
| Wu et al. | Effects of near-fault ground motions and equivalent pulses on Large Crossing Transmission Tower-line System | |
| Andrews et al. | Analysis and simulations of a nonlinear elastic dynamic beam | |
| CN107123336A (en) | A kind of high order mode vibration testing device for being used to impart knowledge to students | |
| CN106052743B (en) | A kind of sensor mass of assessing influences frequency response function the method for size | |
| CN107345786A (en) | A kind of device and method for measuring flexible beam transverse vibrational displacement and strain stress relation | |
| CN103940977A (en) | Adjustable type stratum vibration shearing model box device for shaking table test | |
| RU185091U1 (en) | EDUCATIONAL INSTALLATION FOR STUDYING RADIAL OSCILLATIONS OF A CYLINDRICAL SHELL | |
| CN104658383B (en) | Suspension cable Parametric excitation demonstrating experiment device and its application method | |
| Chen et al. | Transverse response of utility tunnel under near fault ground motions: Multi-shake table array tests | |
| CN105590515B (en) | Various structures system, multilayer, the static(al) of multispan, dynamic test model | |
| CN204440759U (en) | Suspension cable Parametric excitation demonstrating experiment device | |
| CN207215010U (en) | A kind of device for measuring flexible beam transverse vibrational displacement and strain stress relation | |
| CN209979062U (en) | Vibration calibration mechanical structure | |
| JP2753970B2 (en) | Simulation test equipment for seismic roll and pitch of structural members or structures supporting heavy bodies | |
| CN209027765U (en) | A kind of fixed mechanism and vibration device for simulating airborne indicator actual installation | |
| CN216593289U (en) | Building structure displacement testing arrangement based on BIM | |
| CN112014045A (en) | Vibration inspection device for electromechanical equipment production and use method thereof | |
| CN213934257U (en) | Sinusoidal vibration output device | |
| Brown | Seismic analysis and shake table modeling: using a shake table for building analysis | |
| Klečka et al. | Vibration measurement with PULSE and dSPACE equipment | |
| CN107560977A (en) | A kind of sinusoidal power oscillatory type shear rheology instrument | |
| Riley | Teaching Modal Analysis with Mobile Devices |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170901 |
|
| WD01 | Invention patent application deemed withdrawn after publication |