CN102494858A - Testing system for vibration shape of biomaterial structure - Google Patents
Testing system for vibration shape of biomaterial structure Download PDFInfo
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- CN102494858A CN102494858A CN2011103600865A CN201110360086A CN102494858A CN 102494858 A CN102494858 A CN 102494858A CN 2011103600865 A CN2011103600865 A CN 2011103600865A CN 201110360086 A CN201110360086 A CN 201110360086A CN 102494858 A CN102494858 A CN 102494858A
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Abstract
The invention relates to a structural dynamic testing system, in particular to a testing system for the vibration shape of a biomaterial structure, which is characterized by comprising a biomaterial structure test piece, a vibration table, a base and a laser vibration meter, wherein the vibration table generates uniform-amplitude stimulation of a certain frequency, the biomaterial structure test piece is fixedly connected with one end of the base, the other end of the base is fixed together with the vibration table, and the laser vibration meter is a non-contact scanning laser vibration meter and has no additional effect on the quality of the biomaterial structure test piece. When the vibration table stimulates the biomaterial structure test piece, the laser vibration meter is capable of testing the vibration speed of testing points on the test piece and further testing the shape of structural vibration. The testing system is capable of testing the vibration shape of the biomaterial structure test piece under the stimulation of different frequencies.
Description
Technical field:
The present invention relates to the Structural Dynamics test macro, particularly relate to biomaterial structural vibration shape test macro.
Background technology
The plant and animal of occurring in nature, through the evolution in 1 years, in bearing the load process of own wt and growing environment, the biomaterial that is produced had some wonderful characteristics, and biosome has obtained the optimum structure that conforms.People have carried out numerous researchs of biomaterial structure now, and its achievement is used widely in fields such as Aerospace Engineering, engineering in medicine, construction works.As through analyzing the structural similarity of dragonfly film wing and airframe reinforced bulkhead, extract the architectural feature of the good mechanical property of decision dragonfly film fin structure, apply it in the design of airframe reinforced bulkhead, structure Design is optimized.Like the optimality and the growth mechanism thereof of the branching system form through research leaf structure, a kind of New Adaptive growth design method of proposition.This new method of topological optimization design not only can be brought into play good effect in plate shell reinforcing rib design, and can be applied on truss design and the composite Materials Design.In building structure, a lot of bionical application are also arranged, be to copy climbing plant and cobweb like suspended-cable structure, with a series of main supporting members of pull-up structure conduct that receive.The biomaterial structure combines its lightness and stability with the mode of science.Fully the masterpiece of these the Nature of research is the new methods of well seeking technical solution and engineering problem.Particularly to the research of biomaterial structural vibration shape, but the power performance of optimizing project structure designs and produces more better biomimetic engineering structures.But a lot of biomaterial architecture qualities are very light, very thin thickness.Thickness like dragonfly wing has only the 2-3 micron.Sensor can't be installed in the conventionally test, even can install, the influence of its additional mass also can't overcome.The present invention is directed to the characteristics of biomaterial structure, adopt the non-contact testing technology, can test out the biomaterial structural vibrations shape that tallies with the actual situation, the research and development that further can be novel biomimetic engineering structure provide technical support.
Summary of the invention:
The technical matters that solves
The technical matters that the present invention solves is for can test out biomaterial structural vibration shape.
Technical scheme
A kind of biomaterial structural vibration shape test macro is characterized in that being made up of biomaterial structure test specimen, shaking table, pedestal, laser vibration measurer; Biomaterial structure test specimen and pedestal one end are fixedly connected, and the pedestal other end and shaking table are fixed together; Shaking table produces the constant amplitude excitation of certain frequency.。
Described shaking table is mechanical shaker, hydraulic vibration generator, electrodynamic vibration shaker.
Described biomaterial structure is dragonfly wing, cicada wing, honeybee wing, leaf.
Specify
The present invention includes biomaterial structure test specimen, shaking table, pedestal, laser vibration measurer.Shaking table produces the constant amplitude excitation of certain frequency.Biomaterial structure test specimen and pedestal one end are fixedly connected, and the pedestal other end and shaking table are fixed together.Laser vibration measurer is the non-contact scanning laser vibration measurer, the biomaterial structure is not produced the annex quality influence.When shaking table encouraged biomaterial structure test specimen, laser vibration measurer can be tested the speed of each measuring point vibration on the test specimen.Laser vibration measurer can test out the vibration shape of biomaterial structure test specimen under the different frequency exciting thus.Structure of the present invention is the notion of structure in the Structural Dynamics, and the biomaterial structure is dragonfly wing, cicada wing, honeybee wing, leaf.Described shaking table is mechanical shaker, hydraulic vibration generator, electrodynamic vibration shaker.Described laser vibration measurer is the non-contact scanning laser vibration measurer.
Beneficial effect
The present invention is applied the excitation of certain frequency, constant amplitude to biomaterial structure test specimen by shaking table; Make biomaterial structure test specimen produce a steady-state vibration; By the vibration velocity of non-contact scanning laser vibration measurer interrecord structure diverse location, thereby provide whole biomaterial structural vibrations shape.The present invention is simple to operate, and is easy to maintenance, and the characteristics of conventional test methods and modern measuring technology quantification are combined, and can provide biomaterial structural vibrations shape, and can provide the concrete value of key point vibration velocity on the structure quantitatively.Test macro can be widely used in the test of biomaterial structural vibration shape.
Description of drawings:
Fig. 1 is the cut-open view of biomaterial structural vibrations shape test macro embodiment of the present invention; Wherein shaking table 1, pedestal 2, structure test specimen 3, laser vibration measurer 4.
Wherein: the 1-shaking table; The 2-pedestal; 3-biomaterial structure test specimen; The 4-laser vibration measurer.
Fig. 2 is at fixed 5Hz frequently, excitation amplitude 10m/s
2Shi Shuye vibration shape figure.
Fig. 3 is at fixed 10Hz frequently, excitation amplitude 10m/s
2Shi Shuye vibration shape figure.
Five, embodiment
Embodiment 1
Biomaterial structural vibrations shape test macro of the present invention shown in Figure 1 comprises biomaterial structure test specimen 3, shaking table 1, pedestal 2, laser vibration measurer 4.Biomaterial structure 3 test specimens and pedestal 2 one ends are fixedly connected, and pedestal 2 other ends and shaking table 1 are fixed together.Shaking table 1 produces the constant amplitude excitation of certain frequency.Laser vibration measurer 4 is the non-contact scanning laser vibration measurer, and laser vibration measurer can be tested the vibration velocity of test specimen difference in vibration processes, is provided the vibration shape of whole test specimen again by the vibration velocity of difference.Therefore can test out the vibration shape of biomaterial structure test specimen under the different frequency exciting.In the present embodiment: shaking table 1 is the DYS-300-2-60 electric vibration table that Suzhou experimental apparatus head factory is produced.Test specimen 3 is yulan tree leaf.Laser vibration measurer is the PSV-I-400 type noncontact scanning type laser vialog that German POLYTEC company produces.
Adopt the yulan leaf as biomaterial structure test specimen.Electric vibration table produces fixed 5Hz, excitation amplitude 10m/s frequently during experiment
2Steady stimulation and fixed 10Hz, excitation amplitude 10m/s frequently
2Steady stimulation.Fig. 2 is given in and decides frequency 5Hz, excitation amplitude 10m/s
2Shi Shuye vibration shape figure.Fig. 3 is given in and decides frequency 10Hz, excitation amplitude 10m/s
2Shi Shuye vibration shape figure.Test macro removes the vibration shape figure that can provide whole test specimen, also can provide the concrete numerical value of each measuring point on the test specimen.As working as fixed 5Hz, excitation amplitude 10m/s frequently
2Steady stimulation the time, leaf goes up most, down, a left side, the vibration velocity of right, middle five crucial measuring points be respectively 563.5mm/s ,-90.4mm/s ,-114.0mm/s ,-16.4mm/s ,-76.6mm/s.As fixed 10Hz, excitation amplitude 10m/s frequently
2Steady stimulation the time, leaf goes up most, down, a left side, the vibration velocity of right, middle five crucial measuring points be respectively 80.2mm/s, 104.2mm/s, 50.89mm/s ,-101.0mm/s ,-27.8mm/s.
Claims (3)
1. a biomaterial structural vibration shape test macro is characterized in that being made up of biomaterial structure test specimen, shaking table, pedestal, laser vibration measurer; Biomaterial structure test specimen is fixedly connected with pedestal one end, and the pedestal other end and shaking table are fixed together.
2. a kind of biomaterial structural vibration shape test macro according to claim 1 is characterized in that described shaking table is mechanical vibration generator system, hydraulic vibration generator or electrodynamic vibration shaker.
3. a kind of biomaterial structural vibration shape test macro according to claim 1 is characterized in that described biomaterial structure is dragonfly wing, cicada wing, honeybee wing, leaf.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103600865A CN102494858A (en) | 2011-11-15 | 2011-11-15 | Testing system for vibration shape of biomaterial structure |
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| CN2011103600865A CN102494858A (en) | 2011-11-15 | 2011-11-15 | Testing system for vibration shape of biomaterial structure |
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| CN102494858A true CN102494858A (en) | 2012-06-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103226053A (en) * | 2013-03-25 | 2013-07-31 | 河海大学 | Operational modal shape testing system for nonlinear material structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0922950A2 (en) * | 1997-12-08 | 1999-06-16 | Schenck RoTec GmbH | Method for determining unbalance and device for measuring unbalance |
| CN101017109A (en) * | 2007-03-12 | 2007-08-15 | 东南大学 | Detecting method for micro cantilever beam adhesion characteristics |
| DE102007031742A1 (en) * | 2007-07-06 | 2009-01-08 | Schaeffler Kg | Test specimen's e.g. roller bearing, noise testing device, has laser vibrometer detecting vibrations on test specimen, and evaluation unit outputting quality signal in dependence of detected vibrations of test specimen |
| DE102007032064A1 (en) * | 2007-07-10 | 2009-01-15 | Siemens Ag | Test piece holder and method for vibration material testing |
| CN101441106A (en) * | 2008-12-25 | 2009-05-27 | 重庆大学 | Four-freedom degree clamping device of laser vibration measurer |
-
2011
- 2011-11-15 CN CN2011103600865A patent/CN102494858A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0922950A2 (en) * | 1997-12-08 | 1999-06-16 | Schenck RoTec GmbH | Method for determining unbalance and device for measuring unbalance |
| CN101017109A (en) * | 2007-03-12 | 2007-08-15 | 东南大学 | Detecting method for micro cantilever beam adhesion characteristics |
| DE102007031742A1 (en) * | 2007-07-06 | 2009-01-08 | Schaeffler Kg | Test specimen's e.g. roller bearing, noise testing device, has laser vibrometer detecting vibrations on test specimen, and evaluation unit outputting quality signal in dependence of detected vibrations of test specimen |
| DE102007032064A1 (en) * | 2007-07-10 | 2009-01-15 | Siemens Ag | Test piece holder and method for vibration material testing |
| CN101441106A (en) * | 2008-12-25 | 2009-05-27 | 重庆大学 | Four-freedom degree clamping device of laser vibration measurer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103226053A (en) * | 2013-03-25 | 2013-07-31 | 河海大学 | Operational modal shape testing system for nonlinear material structure |
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Application publication date: 20120613 |