CN102607792A - Variable-rigidity simulator - Google Patents
Variable-rigidity simulator Download PDFInfo
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- CN102607792A CN102607792A CN2012100834254A CN201210083425A CN102607792A CN 102607792 A CN102607792 A CN 102607792A CN 2012100834254 A CN2012100834254 A CN 2012100834254A CN 201210083425 A CN201210083425 A CN 201210083425A CN 102607792 A CN102607792 A CN 102607792A
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Abstract
The invention discloses an adjustable-rigidity simulator, which comprises a dual-cavity cylinder body, a triplet piston, a single-cavity cylinder body, a collided piston, a collided block and a bracket, wherein both the dual-cavity cylinder body and the single-cavity cylinder body are fixedly connected with the bracket; the bracket is fixedly arranged on a working surface; the triplet piston comprises first, second and third piston bodies which are arranged on a piston rod in sequence; the dual-cavity cylinder body is provided with first and second working cavities; the single-cavity cylinder body is provided with a third working cavity; the first and the second piston bodies are matched with the first and the second working cavities respectively; the third piston body and the collided piston are matched tightly with different areas in the third working cavity; the collided block is arranged outside the single-cavity cylinder body, and is connected with the collided piston; and the first, the second and the third working cavities are provided with first, second and third through holes for injecting a working medium respectively. By adjusting the pressure of the working medium, simulation of objects of different rigidities is realized; and the adjustable-rigidity simulator has the advantages of wide simulation measuring range, high repetitiveness, high accuracy, high controllability, simple structure, convenience for operating and low cost.
Description
Technical field
The present invention relates to a kind of object simulator in the dynamic environmental test technical field, relate in particular to the adjustable object simulator of a kind of rigidity in the impact test.
Background technology
Moving object impact test in the dynamic environmental test technical field mainly is the impact resistant capability of examination test specimen, and from test, obtains test figure, supports for the structure optimization of test specimen provides data.
The impact resistant capability of test specimen be meant the test specimen non-destructive ability in back that is impacted, and the factor that influences the test specimen impact resistant capability has 2 points, comprising: the rigidity of test specimen, and the rigidity of the object that bumps with test specimen.Wherein, rigidity means the ability of structure or member resistance to deformation, measures with producing needed power of unit strain or moment.
Present impact test is often taked two kinds of methods: one, directly make an experiment with true environment; Two, the method for rigidity such as employing simulation makes an experiment.
For subsized specimen, often adopt first method, just directly place its actual condition to carry out impact test test specimen, directly measure test figure.This method is direct, and is easy to operate, can repeat test of many times, and cost can be too not high, and floor area is little, and Effect of Environmental is not obvious.
Because impact test is destructive test mostly, so, for System for Large-scale Specimen; Its impact test has certain risk, and not reproducible, and cost is high; Be not easy to test of many times, often adopt second method, the method for rigidity such as employing just simulation is carried out impact test.Etc. the rigidity simulation is to replace certain object or certain parts to accomplish impact test with a special member, and the rigidity of this member must be with equivalent by the rigidity of sub.At present, all according to test specimen ratio or life size specific customization, different test specimen rigidity need customize different analogue bodies etc. the rigidity analogue body, not only, make trouble, and in case damage can not be repaired, cost are higher relatively.
Summary of the invention
The objective of the invention is to propose the adjustable simulator of a kind of rigidity, it can make the impact test controllable process with the manufacturing cost and use cost of minimum, and reliability is higher, and test figure is more accurate, thereby overcomes deficiency of the prior art.
For realizing the foregoing invention purpose, the present invention has adopted following technical scheme:
A kind of adjustable rigidity simulator comprises two-chamber cylinder body, three pistons, single chamber cylinder body, is hit piston, receives collision block and support;
Said two-chamber cylinder body all is fixedly connected with support with single chamber cylinder body, and said support is fixedly mounted on the workplace;
Said three pistons comprise first piston body, second piston body and the 3rd piston body of being located at successively on the piston rod, and said two-chamber cylinder body has first working chamber and second working chamber, and said single chamber cylinder body has the 3rd working chamber;
The said first piston body and second piston body cooperate with first working chamber and second working chamber respectively; Said the 3rd piston body with hit piston respectively with the 3rd working chamber in zones of different closely cooperate; The said collision block that receives is located at outside the cylinder body of single chamber, and with hit piston and be connected
Offer first port, second port and the third connectivity mouth that are used to inject actuating medium on said first, second, third working chamber respectively.
Preferably, said twin-tub cavity comprises first and the second portion that sets gradually vertically, and the internal diameter of first is less than second portion, and said first and second portion cooperate with the first piston body and second piston body respectively.
Particularly preferred, transitional region has the tapered cross-section between the second portion of said twin-tub cavity and the first, and the internal diameter of this tapered cross-section increases along the direction away from first gradually, and cooperates with the pyramidal structure of second piston body, one end.
Preferably, said horizontal bar cavity comprises third part and the 4th part that sets gradually vertically, and the internal diameter of third part is greater than the 4th part, said third part and the 4th part respectively with the 3rd piston body with hit piston and cooperated.
Particularly preferred, transitional region has the tapered cross-section between the third part of said horizontal bar cavity and the 4th part, and the internal diameter of this tapered cross-section reduces along the direction away from first gradually, and cooperates with the pyramidal structure of the 3rd piston body one end.
Said two-chamber cylinder body one end is fixedly connected with installed surface, and the other end is fixedly connected with support, and said support is fixedly set on the installed surface.
Said two-chamber cylinder body, single chamber cylinder body and the coaxial setting of support.
Said two-chamber cylinder body one end is connected with installed surface through threaded connection, and said support one sidepiece is fixedly connected with installed surface.
Said support two ends offer the seam that cooperates with two-chamber cylinder body and single chamber cylinder body respectively.
The present invention is when using; Earlier two-chamber cylinder body and support employing threaded connection etc. is fixed on the installed surface; Actuating medium is passed through to inject first working chamber; Push hit three pistons to piston, contact with the transition conical surface of single chamber cylinder body, in corresponding second, third working chamber, inject actuating medium respectively again up to the conical surface of the 3rd piston body; And the global stiffness of regulating actuating medium in three working chambers reaches the analogue value, makes three pistons and hit piston and be issued to balance at the pressure of three working chambers.
After clashed into by collision block; Receive collision block and hit piston under the impact effect, to move to the first piston body, the actuating medium in the compression work chamber, the 3rd piston body of three pistons moves to first working chamber under the cavity pressure effect; The pressure of the 3rd working chamber descends; The first piston body of three pistons is pressed the actuating medium in first working chamber, and simultaneously, the first piston body receives the reacting force of an opposite sign but equal magnitude.Pressure in first working chamber increases to certain value, three piston stop motions, and under this pressure effect, move to the 3rd working chamber, reach balance.
Among the present invention,, can obtain different simulation rigidity, to satisfy the rigidity needs of different analogue bodies through regulating the pressure of three working chambers respectively.
Compared with prior art, the invention has the advantages that: the rigidity of the pressure simulation different objects through regulating actuating medium is simulated, and has solved traditional System for Large-scale Specimen impact test poor repeatability, floor area is big, such environmental effects is obvious, test figure is restive, data discrete property is big, experimentation cost is high problem; Simultaneously, the adjustable rigidity simulator simulation range of design formation is wide by this, good reproducibility; Precision is high, and controllability is good, and is simple in structure; Easy to operate, with low cost.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the present invention;
Fig. 2 is one of application state synoptic diagram of one embodiment of the present invention shown in Figure 1;
Fig. 3 be one embodiment of the present invention shown in Figure 1 the application state synoptic diagram two;
Fig. 4 be one embodiment of the present invention shown in Figure 1 the application state synoptic diagram three;
Each Reference numeral and indicated parts thereof are respectively among the figure: 1-two-chamber cylinder body, 2-three pistons, the single chamber of 3-cylinder body, 4-are hit piston, 5-receives collision block, 6-support, the big quality base of 7-, 8-pipeline, 9-actuating medium, 10-pressure regulator valve, 11-tensimeter, 12-lifting gear, 13-hammer body, 14-clamping device, 15-sensor, 16-guide pillar, the static wall of 17-, 18-test specimen, 19-planing surface, 20-hoisting gear, 21-horizontal mounting surface, 22-to receive collision body.
Embodiment
Below in conjunction with an accompanying drawing and a preferred embodiment technical scheme of the present invention is further described.
Consult Fig. 1; The adjustable rigidity simulator that this preferred embodiment relates to comprises two-chamber cylinder body 1, three pistons 2, single chamber cylinder body 3, is hit piston 4, receives collision block 4 and support 6, and this three piston 2 is made up of piston body 2a, piston body 2b, piston body 2c and piston rod 2d; This two-chamber cylinder body 1 has two working chambers to be respectively QA and QB; This list chamber cylinder body 3 has a working chamber QC, and three working chambers have I-a, I-b, three ports of I-c, can communicate with actuating medium through pipeline.This two-chamber cylinder body 1 can be fixed on the installed surface through screw thread with support 6; And this two-chamber cylinder body 1 cooperates with support 6 with single chamber cylinder body 3 simultaneously; And it is fixing through screw thread and support 6; The piston body 2a of this three piston 2 and piston body 2b cooperate with the different cross section of two-chamber cylinder body 1 respectively, piston body 2c with hit piston 4 and cooperated with the different cross section of single chamber cylinder body 3 respectively, receive collision block 5 place single chamber cylinder body 3 outer and with hit piston 4 and linked to each other.
Consult Fig. 2, when utilizing the adjustable rigidity simulator to carry out impulse test, can regulate through rigidity and obtain various waveforms as waveform generator.The adjustable rigidity simulator is screwed on the big quality base 7 of vertical impact testing table through the through hole on the two-chamber cylinder body 1, and three ports of adjustable rigidity simulator link to each other with actuating medium 9 through tensimeter 11, pressure regulator valve 10, pipeline 8 respectively.During the work of vertical impact testing table, in three working chambers of adjustable rigidity simulator, inject actuating medium earlier, and regulate the pressure of three working chambers; Make that the global stiffness of actuating medium equals the required rigidity of surge waveform in three working chambers, and make three pistons 2 with hit piston 4 and be in balance, lifting gear 12 rises to setting height with the work top 13 of vertical impact testing table along guide pillar 16; Start clamping device 14, make work top 13 rest on setting height, releasing braking device 14 after device 12 to be hoisted resets and accomplishes; Guide pillar 16 drops down work top 13 in the action of gravity lower edge, and that impacts the adjustable rigidity simulator be installed on the big quality base 7 receives collision block 5, make with receive that collision block 5 links to each other hit piston 4 compression work chamber QC; Force three pistons 2 to working chamber QA motion, compression work chamber QA increases the pressure among the working chamber QA; When three pistons 2 move to certain position, the conical surface of piston body 2b end and the transition cone match of two-chamber cylinder body 1, three pistons 2 no longer continue compression work chamber QA; Simultaneously; Under the effect of working chamber QA pressure, three pistons 2 move to working chamber QC, and finally reach balance.In this process, the sensor of installing on the work top 15 is gathered the waveform signal in the impulse test process and is fed back to measuring system.Through regulating the rigidity of simulator, can obtain random waveform.
Consulting accompanying drawing 3, should be to utilize the adjustable rigidity simulator to replace the object that bumps with test specimen with embodiment, promptly receives collision body, carries out impact test, measures the characterisitic parameter of test specimen in collision process.The adjustable rigidity simulator is installed on the static wall 17, and test specimen 18 is placed on the horizontal mounting surface 21, and the simulator control method is identical with embodiment 1; After mixing up, hoisting gear 20 promotes certain angle with horizontal mounting surface 21, joins with planing surface 19; Test specimen 18 slides along the inclined-plane; With the analogue body collision that is installed on the static wall 17, through be installed in sensor 15 on the test specimen 18 gather test specimens 18 in collision process the characteristic parameter and feed back to measuring and analysis system, accomplish the primary collision test.The rigidity of regulating simulator can be simulated different-stiffness and collided by collision body and test specimen, the analysis different-stiffness receive the effect of collision body to test specimen, can carry out test of many times, obtain great number tested data.
Consult Fig. 4, adjustable rigidity simulator also capable of using replaces certain assembly of test specimen to carry out impact test, being replaced measuring the collision characteristic parameter of test specimen under the assembly different-stiffness condition, selects optimum assembly for test specimen the data support is provided.The object that will bump with test specimen is installed on the static wall 17 by collision body 22 promptly, and the adjustable rigidity simulator is installed on the test specimen 18; The simulator control method is identical with embodiment one; After mixing up, hoisting gear 20 promotes certain angle with horizontal mounting surface 21, joins with planing surface 19; Test specimen 18 slides along the inclined-plane; The simulator that is installed on the test specimen 18 collides with the collision body that receives that is installed on the static wall 17, through be installed in sensor 15 on the test specimen 18 gather test specimens 18 in collision process the characteristic parameter and feed back to measuring and analysis system, accomplish the primary collision test.Regulate the rigidity of simulator, the structure that can simulate different-stiffness can be carried out repeatedly revision test to the effect that test specimen produces, and obtains great number tested data.
In the adjustable rigidity simulator course of work, the transition conical surfaces that are provided with in two-chamber cylinder body 1 and the single chamber cylinder body 3 play an important role for protecting three pistons 2 and being hit piston 4.
Above preferred embodiment only supplies to explain the present invention's usefulness, but not limitation of the present invention, the technician in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, has done various conversion or modification, all belongs to category of the present invention.
Claims (9)
1. an adjustable rigidity simulator is characterized in that, it comprises two-chamber cylinder body (1), three pistons (2), single chamber cylinder body (3), is hit piston (4), receives collision block (5) and support (6);
Said two-chamber cylinder body (1) all is fixedly connected with support (6) with single chamber cylinder body (3), and said support (6) is fixedly mounted on the workplace;
Said three pistons (2) comprise first piston body (2a), second piston body (2b) and the 3rd piston body of being located at successively on the piston rod (2d) (2c); Said two-chamber cylinder body (1) has first working chamber (QA) and second working chamber (QB), and said single chamber cylinder body (3) has the 3rd working chamber (QC);
Said first piston body (2a) and second piston body (2b) cooperate with first working chamber (QA) and second working chamber (QB) respectively; Said the 3rd piston body (2c) and hit piston (4) respectively with the 3rd working chamber (QC) in zones of different closely cooperate; The said collision block (5) that receives is located at outside single chamber cylinder body (3); And with hit piston (4) and be connected
Offer first port (Ia), second port (Ib) and the third connectivity mouth (Ic) that are used to inject actuating medium on said first, second, third working chamber respectively.
2. adjustable rigidity simulator according to claim 1; It is characterized in that; Said twin-tub cavity (1) comprises first and the second portion that sets gradually vertically; And the internal diameter of first is less than second portion, and said first and second portion cooperate with first piston body (2a) and second piston body (2b) respectively.
3. adjustable rigidity simulator according to claim 2; It is characterized in that; Transitional region has the tapered cross-section between the second portion of said twin-tub cavity (1) and the first; The internal diameter of this tapered cross-section increases along the direction away from first gradually, and cooperates with the pyramidal structure of second piston body (2b) end.
4. adjustable rigidity simulator according to claim 1; It is characterized in that; Said horizontal bar cavity (3) comprises third part and the 4th part that sets gradually vertically; And the internal diameter of third part is greater than the 4th part, and said third part and the 4th part are respectively with the 3rd piston body (2c) with hit piston (4) and cooperate.
5. adjustable rigidity simulator according to claim 4; It is characterized in that; Transitional region has the tapered cross-section between the third part of said horizontal bar cavity (3) and the 4th part; The internal diameter of this tapered cross-section reduces along the direction away from first gradually, and cooperates with the pyramidal structure of the 3rd piston body (2c) end.
6. adjustable rigidity simulator according to claim 1 is characterized in that, said two-chamber cylinder body (1) one end is fixedly connected with installed surface, and the other end is fixedly connected with support (6), and said support (6) is fixedly set on the installed surface.
7. adjustable rigidity simulator according to claim 6 is characterized in that, said two-chamber cylinder body two-chamber cylinder body (1) and the coaxial setting of support (6).
8. according to claim 6 or 7 described adjustable rigidity simulators, it is characterized in that said two-chamber cylinder body (1) one end is connected with installed surface through threaded connection, said support (6) one sidepieces are fixedly connected with installed surface.
9. adjustable rigidity simulator according to claim 1 is characterized in that, said support (6) two ends offer the seam that cooperates with two-chamber cylinder body (1) and single chamber cylinder body (3) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210083425.4A CN102607792B (en) | 2012-03-27 | 2012-03-27 | Variable-rigidity simulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210083425.4A CN102607792B (en) | 2012-03-27 | 2012-03-27 | Variable-rigidity simulator |
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| CN102607792A true CN102607792A (en) | 2012-07-25 |
| CN102607792B CN102607792B (en) | 2014-04-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103434656A (en) * | 2013-09-10 | 2013-12-11 | 北京航空航天大学 | Rigidity simulator with variable rigidity |
| CN104897399A (en) * | 2015-06-23 | 2015-09-09 | 中国航空工业集团公司西安飞机设计研究所 | Adjustable tension and compression rigidity simulator and mechanical drive link |
| CN112033827A (en) * | 2020-09-11 | 2020-12-04 | 黄山学院 | Low-temperature impact test device of separated Hopkinson pressure bar |
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| SU1017941A1 (en) * | 1982-01-25 | 1983-05-15 | Московское Ордена Ленина, Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Высшее Техническое Училище Им. Н.Э.Баумана | Stand for simulating mechanism assembly rigidity |
| RU2219509C1 (en) * | 2002-09-19 | 2003-12-20 | Открытое акционерное общество Научно-производственное объединение "Искра" | Bed for impact test ( variants ) |
| CN101532904A (en) * | 2009-04-29 | 2009-09-16 | 中国石油大学(北京) | Impact block capable of adjusting impact time and device for simulating two environmental forces using same |
| CN102192827A (en) * | 2010-02-03 | 2011-09-21 | 高田株式会社 | Impact test device and impact test method |
| CN202511955U (en) * | 2012-03-27 | 2012-10-31 | 苏州世力源科技有限公司 | Simulator with adjustable rigidity |
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2012
- 2012-03-27 CN CN201210083425.4A patent/CN102607792B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1017941A1 (en) * | 1982-01-25 | 1983-05-15 | Московское Ордена Ленина, Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Высшее Техническое Училище Им. Н.Э.Баумана | Stand for simulating mechanism assembly rigidity |
| RU2219509C1 (en) * | 2002-09-19 | 2003-12-20 | Открытое акционерное общество Научно-производственное объединение "Искра" | Bed for impact test ( variants ) |
| CN101532904A (en) * | 2009-04-29 | 2009-09-16 | 中国石油大学(北京) | Impact block capable of adjusting impact time and device for simulating two environmental forces using same |
| CN102192827A (en) * | 2010-02-03 | 2011-09-21 | 高田株式会社 | Impact test device and impact test method |
| CN202511955U (en) * | 2012-03-27 | 2012-10-31 | 苏州世力源科技有限公司 | Simulator with adjustable rigidity |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103434656A (en) * | 2013-09-10 | 2013-12-11 | 北京航空航天大学 | Rigidity simulator with variable rigidity |
| CN103434656B (en) * | 2013-09-10 | 2015-07-01 | 北京航空航天大学 | Rigidity simulator with variable rigidity |
| CN104897399A (en) * | 2015-06-23 | 2015-09-09 | 中国航空工业集团公司西安飞机设计研究所 | Adjustable tension and compression rigidity simulator and mechanical drive link |
| CN112033827A (en) * | 2020-09-11 | 2020-12-04 | 黄山学院 | Low-temperature impact test device of separated Hopkinson pressure bar |
| CN112033827B (en) * | 2020-09-11 | 2023-10-03 | 黄山学院 | Low-temperature impact test device of split Hopkinson pressure bar |
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| CN102607792B (en) | 2014-04-23 |
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