CN106442053B - The research method of space structure based on 3D printing technique - Google Patents
The research method of space structure based on 3D printing technique Download PDFInfo
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- CN106442053B CN106442053B CN201610867637.XA CN201610867637A CN106442053B CN 106442053 B CN106442053 B CN 106442053B CN 201610867637 A CN201610867637 A CN 201610867637A CN 106442053 B CN106442053 B CN 106442053B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- 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
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- 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
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- 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
- G01N2203/0019—Compressive
Abstract
The present invention relates to 3D printing field, it discloses a kind of space structural research and its method based on 3D printing technique include the following steps: that (S1) selects printed material；(S2) dome structure threedimensional electronic model is established；(S3) dome structure model is printed；(S4) it is further applied load and tests to dome structure model.Beneficial effects of the present invention: high-efficient, good integrity；Operability, flexibility and application are strong；It is adaptable.
Description
Technical field
The present invention relates to 3D printing and building field more particularly to a kind of space structures based on 3D printing technique
Research method.
Background technique
Latticed shell structure is a kind of structure for having one-dimensional stress property under load action and be in Space-Work, it is to solve
A kind of most typical structure type of long span building structure.With being constantly progressive for modern economic construction and technology and culture cause,
Requirement of the people to construction style is more and more diversified, to push the rapid development of this large span, large spatial structure.Vault
Roof construction have using span is big, structure stress is uniform, dead load is light and with material economy, large space can be covered, and can mention
For a variety of graces architectural image the advantages that, therefore at home and abroad paid attention to.It is widely used in gymnasium, show room,
The building such as cinema, Waiting Lounge, hangar, industrial premises.In consideration of it, passing through the mechanical property in buildings model research dome space
It is just particularly important with stability.
Currently, the investigative technique of existing building dome space structure has the following disadvantages:
(1) research of building dome space structure focuses mostly in theoretical calculation, and since structure is complicated, experimental study is more tired
It is difficult；
(2) manufacture is often used conventional methods for building the buildings model of dome structure space research, there are following
Problem:Buildings model it is peculiarly shaped, template construct is difficult, and difficulty of construction is big, is often unable to satisfy wanting for architectural image abnormity
It asks, there are biggish adaptability defects, or even cannot achieve；The human and material resources resource for needing to put into is big；Fabrication cycle
It is long, it is not easy to long run test；There are errors for the production of buildings model, adversely affect to test result；
(3) test difficulty is big: the buildings model for building dome structure space research is often peculiarly shaped and the scale of construction is big,
This brings very big difficulty to correlation test, and conventional instrument and test method are not available；Need to put into a large amount of manpower, object
Power just can solve related problem to the time, and test result often has error.
Problem above limits the research of building dome space structure, hinders the development of building dome space structure.
Summary of the invention
In order to overcome the shortcoming in the prior art of above-mentioned meaning, the present invention provides a kind of based on 3D printing technique
It is big to solve building dome space-filling model production difficulty, test difficulty in the prior art for the research method of space structure
And the problem of developing slowly.
The present invention is achieved by the following technical solutions: a kind of research of the space structure based on 3D printing technique
Method includes the following steps:
(S1) printed material is selected；
(S2) dome structure threedimensional electronic model is established；
(S3) dome structure model is printed；
(S4) it is further applied load and tests to dome structure model.
As a further improvement of the present invention: in the step (S2), determining the geometric parameter of dome structure model；It establishes
Dome structure model it is similar to the geometry of practical dome structure and keep certain proportionate relationship.
As a further improvement of the present invention: in the step (S3), the dome structure threedimensional electronic model of foundation being led
Enter 3D printer, the running parameter of 3D printer is set, then the dome structure threedimensional electronic model of importing is printed.
As a further improvement of the present invention: in the step (S4), tested according to the following steps: (S41) production with
Dome structure model adaptation with pedestal with concave surfaces；(S42) by the oppositely positioned concave surface in the pedestal of dome structure model
In, it is placed in its top in the concave surface；(S43) be evenly arranged in dome structure model displacement sensor for acquire test
Data；(S44) arrangement high definition camera device is for recording test situation；(S45) pedestal for being placed with dome structure model is put
It is placed in pressure testing machine, places one piece of lightweight bulkhead in the bottom of dome structure model；(S46) start pressure testing machine, make
Its pedestal slowly rises, and top board and is placed on the baffle contacts of dome structure model bottom and makes lightweight bulkhead stress, gently
Matter partition gives suffered power Transmit evenly to dome structure model, and dome structure model transmits the force to pedestal, at this point, according to
The principle of active force and reaction force, the pedestal give suffered power Transmit evenly to dome structure model, make its uniformly by
Power achievees the purpose that test, convenient for the development of follow-up study work.
As a further improvement of the present invention: wrapping up dome structure model, the pedestal and dome in the concave surface of the pedestal
Bed course is equipped between structural model.
As a further improvement of the present invention: in (S43), dome knot during the acquisition test of institute's displacement sensors
The stress condition and change in displacement situation at each position of structure model.
As a further improvement of the present invention: in the step (S44), during the high definition camera device record test
The situation of change at each position of dome structure destroys situation and failure mode data information.
As a further improvement of the present invention: the printed material is identical as the material of practical dome structure, similar or deposit
It is contacting.
Beneficial effects of the present invention: (1) high-efficient, good integrity: modelling is easy, uniform in material, is integrally formed, whole
Body performance is good；High degree of automation, not needing template can be completed, and save a large amount of artificial and materials；(2) operability, spirit
Activity and application are strong: the programs such as the electronics modeling of manufacturing process, 3D printing can all facilitate realization；And can according to demand flexibly into
The modeling of row electronics and printer model；Meanwhile provided with the pedestal with model adaptation, test method is simplified, model is enable to exist
Loading test is completed in conventional pressure testing machine；(3) adaptable: on the one hand, wall thickness, span, height of model etc. are single
Situation and combinations thereof can be changed, to carry out follow-up study work for different situations；On the other hand, anti-for being provided to model
The concave surface depth of the pedestal of power can be adjusted according to demand, to be directed to the different force parts of model, studied it and destroyed feelings
Condition.
Detailed description of the invention
Fig. 1 present invention tests schematic diagram；
Fig. 2 is dome structure elevational schematic view of the present invention；
Fig. 3 is concrete pedestal schematic diagram of the present invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
A kind of space structural research method based on 3D printing technique, includes the following steps:
(S1) printed material is selected, the requirement of printed material is selected to be: the dome structure model of printing and practical dome knot
The material of structure is same or similar or there are certain relationships；
(S2) dome structure threedimensional electronic model is established, the key for establishing dome structure threedimensional electronic model is determining wall
The geometric parameters such as thickness, span, height；Its principle is dome structure model and the practical dome structure geometric similarity established and keeps
Certain proportionate relationship；
(S3) dome structure model is printed, the dome structure threedimensional electronic model of foundation is imported into 3D printer, then, if
The running parameters such as printable layer thickness, print speed and the print temperature of 3D printer are set, it is then three-dimensional to the dome structure of importing
Electronic model is printed；The dome structure model of printing is integrally formed, and structural and globality is all preferable；
(S4) it is further applied load and tests to dome structure model.
In the step (S2), the geometric parameter of dome structure model is determined；The dome structure model and practical vault of foundation
The geometry of roof construction is similar and keeps certain proportionate relationship.
In the step (S3), the dome structure threedimensional electronic model of foundation is imported into 3D printer, 3D printer is set
Running parameter, then the dome structure threedimensional electronic model of importing is printed.
In the step (S4), tested according to the following steps: (S41) makes with dome structure model adaptation with recessed
The pedestal in face；(S42) dome structure model is oppositely positioned in the concave surface of the pedestal, so that its top is placed in the concave surface
In, in this embodiment, in order to make the concave surface and dome structure model sufficiently, be in close contact, so that power uniformly transfers,
It is provided with one layer of rubber mat layer between；(S43) be evenly arranged in dome structure model displacement sensor for acquire examination
Test data；(S44) arrangement high definition camera device is for recording test situation；(S45) pedestal of dome structure model will be placed with
It is placed in pressure testing machine, places one piece of partition in the bottom of dome structure model；(S46) start pressure testing machine, make it
Pedestal slowly rises, and top board and is placed on the baffle contacts of dome structure model bottom and makes clapboard stress.To partition
It is required that generally lightweight bulkhead, this partition have certain strength and stiffness, effect is in test to mention pressure testing machine
The power of confession is evenly applied in dome structure model, partition require lightweight the reason of be to avoid before on-test, due to every
The weight of plate makes dome structure model elder generation stress, brings error to test structure.Pressure testing machine makes the lightweight bulkhead stress,
Lightweight bulkhead gives suffered power Transmit evenly to dome structure model, and dome structure model transmits the force to pedestal, at this point, root
According to the principle of active force and reaction force, the pedestal gives suffered power Transmit evenly to dome structure model, makes it uniformly
Stress achievees the purpose that test, convenient for the development of follow-up study work.
Dome structure model is wrapped up in the concave surface of the pedestal, and bed course is equipped between the pedestal and dome structure model.
In (S43), the stress condition at each position of dome structure model during the acquisition test of institute's displacement sensors
With change in displacement situation.
In the step (S44), the variation feelings at each position of dome structure during the high definition camera device record test
Condition destroys situation and failure mode data information.
The printed material is identical as the material of practical dome structure, similar or presence contacts.
In this embodiment, since the dome structure model printed based on 3D printing technique is that curved surface is shelly-shaped,
Being further applied load to it, it is often relatively difficult to be tested, in consideration of it, be equably further applied load to dome structure model, so as to
Carry out experimental study be it is particularly important, it is specific as follows:
(1) it makes with dome structure model adaptation with pedestal with concave surfaces.The characteristics of this pedestal, is:Its concave surface will be with
The shelly-shaped adaptation (dome structure model can be wrapped up) of the curved surface of dome structure model,It will have certain strength and stiffness, energy
Uniform counter-force is enough provided.
(2) dome structure model is oppositely positioned in the concave surface of the pedestal, it is placed in its top in the concave surface, it is excellent
Selection of land, in order to make the concave surface and dome structure model sufficiently, be in close contact, so that power uniformly transfers, set between
One layer of rubber mat layer is set.
(3) be evenly arranged displacement sensor in dome structure model, to acquire test during dome structure model
The stress condition and change in displacement situation at each position, in favor of carrying out follow-up study work.
(4) quick high definition camera device is arranged, to record the situation of change at each position of dome structure during test, broken
Bad situation and failure mode are worked with the subsequent development correlative study of benefit.
(5) pedestal for being placed with dome structure model is placed in pressure testing machine, in the bottom of dome structure model
One piece of lightweight bulkhead is placed, this partition has certain strength and stiffness, and effect is in test to provide pressure testing machine
Power be evenly applied in dome structure model, partition require lightweight the reason of be to avoid before on-test, due to partition
Weight make dome structure model elder generation stress, error is brought to test structure.
(6) start pressure testing machine, pedestal slowly rises, top board be placed on the light of dome structure model bottom
Matter baffle contacts simultaneously make its stress, in this way, pressure testing machine makes the lightweight bulkhead stress, lightweight bulkhead is uniform by suffered power
Ground passes to dome structure model, and dome structure model transmits the force to pedestal, at this point, according to the original of active force and reaction force
Reason, the pedestal give suffered power Transmit evenly to dome structure model, make its uniform stressed, achieve the purpose that test, just
In the development of follow-up study work.
In this specific embodiment, this space structural research method based on 3D printing technique specifically:
(1) printed material is selected, such as selects a kind of resin material as printed material；
(2) dome structure threedimensional electronic model is established, 1 span of dome structure model is unified for 180mm, wall thickness 3mm；It is high
Degree respectively 50mm, 77mm, 90mm, 110mm and 124mm, as shown in Figure 2；
(3) dome structure model is printed, the dome structure threedimensional electronic model of above-mentioned foundation is imported into 3D printer, is connect
, the running parameters such as printable layer thickness, print speed and the print temperature of 3D printer are set, then to the dome structure of importing
Model 1 is printed；
When test, carry out as follows:
(1) production be adapted to dome structure model 1 with pedestal 2 with concave surfaces.Preferably, the application patent selects coagulation
Soil matrix seat, the reason is that materials are convenient, it is simple for production, and its strength and stiffness is met the requirements；The size of concave surface and above-mentioned dome knot
Structure model 1 is adapted to, and the depth of concave surface is selected as the 1/3 of above-mentioned 1 height of dome structure model, as shown in Figure 3.It needs to illustrate
It is that steel can be selected as according to test demand for the making material of the pedestal or other can satisfy strength and stiffness requirement
Material, be not limited in concrete；The depth of the pedestal concave surface is not limited in the 1/3 of dome structure model height, can
With according to the demand of research, and it is adjusted, for example select different concave surface depth, makes the stress of dome structure model 1
Position is different, and then studies it and destroy situation.
(2) the dome structure model 1 is oppositely positioned in the concave surface of the pedestal 2, it is placed in its top described recessed
In face, it is preferable that in order to make the concave surface and dome structure model sufficiently, be in close contact, so that power uniformly transfers, in the two
Between be provided with one layer of rubber mat layer.
(3) be evenly arranged displacement sensor in the dome structure model, to acquire test during dome structure
The stress condition and change in displacement situation at each position of model, in favor of carrying out follow-up study work.
(4) quick high definition camera device is arranged, to record the variation feelings at each position of dome structure model 1 during test
Condition destroys situation and failure mode, is worked with the subsequent development correlative study of benefit.
(5) concrete pedestal 2 for being placed with dome structure model 1 is placed in pressure testing machine, in dome structure mould
One piece of lightweight bulkhead 3 is placed in the bottom of type 1, this partition has certain strength and stiffness, and effect is in test by pressure
The power that testing machine provides is evenly applied in dome structure model 1.
(6) start pressure testing machine, pedestal slowly rises, top board be placed on the light of dome structure model bottom
Matter partition 3, which contacts, simultaneously makes its stress, in this way, pressure testing machine makes 3 stress of lightweight bulkhead, lightweight bulkhead 3 is by suffered power
Transmit evenly transmits the force to concrete pedestal 2 to dome structure model 1, dome structure model 1, at this point, according to active force
With the principle of reaction force, suffered power Transmit evenly to dome structure model 1, is made it uniformly by the concrete pedestal 2
Stress achievees the purpose that test, convenient for the development of follow-up study work.
The present invention not only can be to unified wall thickness and span but highly different dome structures is tested, to study difference
Influence of the ratio of rise to span to dome structure；It simultaneously can also be to the single situation such as different wall thickness, different spans, different height and its group
Conjunction is tested, to carry out follow-up study work for different situations.
The above content is combining specific implementation to be further described to what the present invention was done, should not assert of the invention specific
Realization is confined to described above.For those skilled in the art, without departing from the inventive concept of the premise,
A number of simple deductions or replacements can also be made, be regarded as protection scope that the claim submitted of the present invention determines it
It is interior.
Claims (6)
1. a kind of space structural research method based on 3D printing technique, characterized by the following steps:
(S1) printed material is selected；
(S2) dome structure threedimensional electronic model is established；
(S3) dome structure model is printed；
(S4) it is further applied load and tests to dome structure model；
In the step (S4), tested according to the following steps: (S41) production is with dome structure model adaptation with concave surfaces
Pedestal；(S42) dome structure model is oppositely positioned in the concave surface of the pedestal, it is placed in its top in the concave surface；
(S43) displacement sensor is evenly arranged in dome structure model for acquiring test data；(S44) high definition camera device is arranged
For recording test situation；(S45) pedestal for being placed with dome structure model is placed in pressure testing machine, in dome structure
Place one piece of partition in the bottom of model；(S46) start pressure testing machine, slowly increase its pedestal, top board be placed on
The baffle contacts of dome structure model bottom simultaneously make clapboard stress, and partition gives suffered power Transmit evenly to dome structure mould
Type, dome structure model transmit the force to pedestal.
2. the space structural research method according to claim 1 based on 3D printing technique, it is characterised in that: described
In step (S2), the geometric parameter of dome structure model is determined；The dome structure model of foundation and the geometry of practical dome structure
Structure is similar and keeps certain proportionate relationship.
3. the space structural research method according to claim 1 based on 3D printing technique, which is characterized in that described
In step (S3), the dome structure threedimensional electronic model of foundation is imported into 3D printer, the running parameter of 3D printer is set, so
The dome structure threedimensional electronic model of importing is printed afterwards.
4. the space structural research method according to claim 1 based on 3D printing technique, it is characterised in that: described
Dome structure model is wrapped up in the concave surface of pedestal, and bed course is equipped between the pedestal and dome structure model.
5. the space structural research method according to claim 1 based on 3D printing technique, it is characterised in that: described
(S43) in, the stress condition and change in displacement feelings at each position of dome structure model during the acquisition test of institute's displacement sensors
Condition.
6. the space structural research method according to claim 1 based on 3D printing technique, which is characterized in that described
In step (S44), during the high definition camera device record test, the situation of change at each position of dome structure destroys situation
And failure mode data information.
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| CN108507874A (en) * | 2018-03-15 | 2018-09-07 | 东北大学 | A kind of model test method of prefabricated assembled underground structure |
| CN109974951B (en) * | 2019-04-04 | 2020-12-04 | 北京工业大学 | 3D prints sufficient orthopedic ware rigidity detection experiment platform of ankle |
| CN115629199B (en) * | 2022-12-06 | 2023-04-21 | 深圳大学 | Liquid material performance detection method and system based on surface impact |
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| JP2002040006A (en) * | 2000-07-28 | 2002-02-06 | Sumitomo Forestry Co Ltd | Measuring method of volatile organic compound from building material |
| JP4266345B2 (en) * | 2003-02-25 | 2009-05-20 | シャープ株式会社 | Method for analyzing fine regions of organic materials |
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| CN103332885A (en) * | 2013-05-22 | 2013-10-02 | 清华大学 | Blanc fixe cementitious rock soil-like material and method for making simulative rock from the blanc fixe cementitious rock soil-like material |
| CN104596846A (en) * | 2014-12-25 | 2015-05-06 | 中国科学院力学研究所 | Method for correcting elasticity modulus and stress-strain curve in metal material compression test |
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