CN113323979A - Quasi-zero stiffness vibration isolator with unstability simply supported beam as positive stiffness bearing element - Google Patents
Quasi-zero stiffness vibration isolator with unstability simply supported beam as positive stiffness bearing element Download PDFInfo
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- CN113323979A CN113323979A CN202110679555.3A CN202110679555A CN113323979A CN 113323979 A CN113323979 A CN 113323979A CN 202110679555 A CN202110679555 A CN 202110679555A CN 113323979 A CN113323979 A CN 113323979A
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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
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
- F16F3/026—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction to give a zero-spring rate characteristic
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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
- F16F15/04—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 using elastic means
- F16F15/06—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 using elastic means with metal springs
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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
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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
- F16F2230/00—Purpose; Design features
- F16F2230/0052—Physically guiding or influencing
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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
- F16F2238/00—Type of springs or dampers
- F16F2238/02—Springs
- F16F2238/022—Springs leaf-like, e.g. of thin, planar-like metal
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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
- F16F2238/00—Type of springs or dampers
- F16F2238/02—Springs
- F16F2238/026—Springs wound- or coil-like
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to a quasi-zero stiffness vibration isolator with a unstability simple-supported beam as a positive stiffness bearing element, belonging to the technical field of mechanical vibration and noise control, aiming at solving the problems of larger vibration isolation frequency and smaller vibration isolation interval of the existing quasi-zero stiffness vibration isolator, the invention provides the quasi-zero stiffness vibration isolator with the unstability simple-supported beam as the positive stiffness bearing element, the simple-supported beam which fully utilizes the initial geometric defects has the excellent characteristic of being capable of obtaining very low dynamic stiffness under the condition of large bending deformation without sacrificing the bearing capacity, the dynamic stiffness of the simple-supported beam is further reduced by combining the quasi-zero stiffness vibration isolator with a negative stiffness structure constructed by a pair of symmetrical oblique springs, compared with the traditional quasi-zero stiffness vibration isolator, the quasi-zero stiffness vibration isolator has lower vibration isolation frequency and larger vibration isolation interval.
Description
Technical Field
The invention belongs to the technical field of mechanical vibration and noise control, and particularly relates to a quasi-zero stiffness vibration isolator with a unstability simply supported beam as a positive stiffness bearing element.
Background
The quasi-zero stiffness vibration isolator has the stiffness characteristics of high static and low dynamic, can effectively improve the stability and the static bearing capacity of a vibration isolation system, and has excellent low-frequency vibration isolation performance. The quasi-zero stiffness vibration isolator is a combined vibration isolator which connects elastic elements with positive and negative stiffness in parallel at a static balance position to obtain zero stiffness, and has excellent low-frequency vibration isolation performance while realizing large bearing capacity of a vibration isolation system by reasonably optimizing geometric and stiffness parameters of the elastic elements with the positive and negative stiffness. The bearing capacity is determined by the positive stiffness spring, the negative stiffness element is used for reducing the dynamic stiffness of the system, the positive stiffness and the negative stiffness are connected in parallel, the high static stiffness and the low dynamic stiffness are achieved, and the vibration isolation performance of the system is improved. However, the existing quasi-zero stiffness vibration isolator has the problems of large vibration isolation frequency and small vibration isolation interval, the vibration isolation performance of the quasi-zero stiffness vibration isolator is poor when heavy load is suddenly applied, and the quasi-zero stiffness vibration isolator can be directly failed when the heavy load is serious, so that the problem that the quasi-zero stiffness vibration isolator using the unstability simply supported beam as the positive stiffness bearing element is solved by researching and developing the quasi-zero stiffness vibration isolator which meets the actual requirement.
Disclosure of Invention
The invention aims to solve the problems of large vibration isolation frequency and small vibration isolation interval of the conventional quasi-zero stiffness vibration isolator, and further provides the quasi-zero stiffness vibration isolator with the unstability simply supported beam as a positive stiffness bearing element;
a quasi-zero stiffness vibration isolator with unstability simply supported beams as positive stiffness bearing elements comprises two simply supported beams, a lower hinged seat, a guide rod, a bearing platform, a plurality of vibration isolation units and a base;
the guide rod is vertically arranged on the base, one end of the guide rod is fixedly connected to the upper surface of the base, the lower hinged seat is sleeved on the lower portion of the guide rod and fixedly connected to the upper surface of the base, the bearing platform is sleeved on the upper portion of the guide rod and is in sliding connection with the guide rod, the two simply-supported beams are oppositely arranged on two sides of the bearing platform, one end of each simply-supported beam is hinged to the lower portion of the polygonal bearing platform, the other end of each simply-supported beam is hinged to the lower hinged seat, the vibration isolation units are arranged on the outer side wall of the bearing platform at equal intervals in the circumferential direction, one end of each vibration isolation unit is hinged to the bearing platform, and the other end of each vibration isolation unit is fixedly connected with the fixed wall;
furthermore, the simply supported beam is of an arc-shaped plate structure;
furthermore, the lower hinged seat comprises a fixed plate and two supporting seats, a through hole is processed in the center of the top surface of the fixed plate, the two supporting seats are arranged below the fixed plate and are oppositely arranged along the axis of the through hole, each supporting seat is fixedly connected with the lower surface of the fixed plate, the fixed plate is sleeved at the lower part of the guide rod through the through hole, two hinged joints are arranged on the fixed plate, and each hinged joint is arranged corresponding to one simple support beam;
furthermore, the bearing platform comprises a top loading plate, a middle connecting plate and a bottom hinged plate which are coaxially arranged from top to bottom in sequence, the top loading plate is fixedly connected on the upper surface of the middle connecting plate, the middle connecting plate is fixedly connected on the upper surface of the bottom hinged plate, a first sliding through hole is processed at the center of the upper surface of the top loading plate, a second sliding through hole is processed at the center of the upper surface of the middle connecting plate, a third sliding through hole is processed at the center of the upper surface of the bottom hinged plate, the first sliding through hole, the second sliding through hole and the third sliding through hole are the same in aperture, a plurality of vibration isolation units are arranged on the outer side wall of the top loading plate at equal intervals along the circumferential direction, one end of each vibration isolation unit is hinged with the top loading plate, two simple support beams are oppositely arranged on two sides of the bottom hinged plate, and the top end of each simple support beam is hinged with one side of the bottom hinged plate;
further, the top carrier plate is a circular plate or a polygonal plate;
furthermore, the vibration isolation unit comprises a linear spring and a spring seat, one end of the linear spring is hinged with the outer side wall of the top loading plate, the other end of the linear spring is hinged with the spring seat, and the spring seat is fixedly connected to the fixed wall;
further, the upper hinge point and the lower hinge point of each simple support beam are located on the same vertical line.
Compared with the prior art, the invention has the following beneficial effects:
1. the quasi-zero stiffness vibration isolator with the unstability simply supported beam as the positive stiffness bearing element provided by the invention fully utilizes the excellent characteristic that the simply supported beam with the initial geometric defect has very low dynamic stiffness under the condition of large deformation by buckling without sacrificing the bearing capacity of the simply supported beam, and further reduces the dynamic stiffness of the simply supported beam by combining the quasi-zero stiffness vibration isolator with the negative stiffness structure constructed by a pair of symmetrical oblique springs so as to obtain a larger vibration isolation interval while keeping the excellent bearing performance.
2. Compared with the traditional quasi-zero stiffness vibration isolator, the quasi-zero stiffness vibration isolator with the unstability simply supported beam as the positive stiffness bearing element provided by the invention can obtain considerable bearing capacity and lower dynamic stiffness under the condition of keeping the bearing performance.
3. The quasi-zero stiffness vibration isolator with the unstability simply supported beam as the positive stiffness bearing element has the advantages of simple structure and convenience in installation, and can be used under various heavy load conditions.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a front view of the present invention when carrying a weight;
FIG. 5 is a schematic diagram showing a relationship between a displacement transmission rate curve and a vibration isolation interval;
FIG. 6 is a force-displacement curve comparison of a three-spring design with the present design;
FIG. 7 is a stiffness versus displacement curve comparison of a three spring design to the present design;
in the figure: the device comprises a simply supported beam 1, a lower hinged seat 2, a guide rod 3, a bearing platform 4, a linear spring 5, a spring seat 6 and a base 7.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 4, and provides a quasi-zero stiffness vibration isolator with a unstability simply supported beam as a positive stiffness bearing element, wherein the quasi-zero stiffness vibration isolator comprises two simply supported beams 1, a lower hinge base 2, a guide rod 3, a bearing platform 4, a plurality of vibration isolation units and a base 7;
the vertical setting of guide bar 3 is on base 7, and the one end rigid coupling of guide bar 3 is on the upper surface of base 7, articulated seat 2 cover is established in the lower part of guide bar 3 down, and articulated seat 2 rigid coupling is on the upper surface of base 7 down, bearing platform 4 cover is established on the upper portion of guide bar 3, and bearing platform 4 and 3 sliding connection of guide bar, two simple beam 1 set up the both sides at bearing platform 4 relatively, and the one end of every simple beam 1 is articulated with polygon bearing platform 4 lower part, the other end of every simple beam 1 is articulated with articulated seat 2 down, a plurality of vibration isolation units set up on bearing platform 4's lateral wall along circumference equidistance, and the one end of every vibration isolation unit is articulated with bearing platform 4, the other end and the fixed wall fixed connection of every vibration isolation unit.
In this embodiment, load-bearing platform 4 can be the polygonal plate, also can be the circular slab, in order to be adapted to the load-bearing platform 4 of isostructure, quasi-zero rigidity isolator's outside generally is equipped with the sleeve with the same shape of load-bearing platform 4 outline, for example, load-bearing platform 4 terminal surface is circular, telescopic be cylindrical sleeve, load-bearing platform 4 terminal surface is the quadrangle, telescopic be the quadrangular sleeve, telescopic inner wall is the fixed wall of fixed vibration isolation unit other end promptly, the sleeve adopts transparent material usually, be convenient for operate the operating condition who observes the position of quasi-zero rigidity isolator during operation platform and simple beam 1 and vibration isolation unit.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1 to 4, and the present embodiment further defines the simply supported beam 1 according to the first embodiment, and in the present embodiment, the simply supported beam 1 has an arc-shaped plate structure. Other components and connection modes are the same as those of the first embodiment.
So set up, simple beam 1 initial state is the arc structure, is favorable to bearing the weight of the thing at the platform after, simple beam 1 can follow radian direction atress crooked, the deformation direction of simple beam 1 when clear and definite atress.
The third concrete implementation mode: the present embodiment is described with reference to fig. 1 to 4, and is further limited to the lower hinge base 2 according to the second embodiment, in the present embodiment, the lower hinge base 2 includes a fixed plate and two supporting bases, a through hole is processed at the center of the top surface of the fixed plate, the two supporting bases are disposed below the fixed plate, the two supporting bases are disposed opposite to each other along the axis of the through hole, each supporting base is fixedly connected to the lower surface of the fixed plate, the fixed plate is sleeved on the lower portion of the guide rod 3 through the through hole, two hinge points are disposed on the fixed plate, and each hinge point is disposed corresponding to one simple support beam 1. The other components and the connection mode are the same as those of the second embodiment.
So set up, articulated seat 2 is used for providing the lower part pin joint to simply supported beam 1 down, in order to guarantee the accuracy of articulated position.
The fourth concrete implementation mode: the present embodiment is described with reference to fig. 1 to 4, and the present embodiment further defines the bearing platform 4 described in the fourth embodiment, in the present embodiment, the bearing platform 4 includes a top loading plate, a middle connecting plate and a bottom hinge plate, the top loading plate, the middle connecting plate and the bottom hinge plate are coaxially arranged from top to bottom, the top loading plate is fixedly connected to the upper surface of the middle connecting plate, the middle connecting plate is fixedly connected to the upper surface of the bottom hinge plate, a first sliding through hole is processed at the center of the upper surface of the top loading plate, a second sliding through hole is processed at the center of the upper surface of the middle connecting plate, a third sliding through hole is processed at the center of the upper surface of the bottom hinge plate, the first sliding through hole, the second sliding through hole and the third sliding through hole have the same aperture, and a plurality of vibration isolation units are equidistantly arranged on the outer side wall of the top loading plate along the circumferential direction, one end of each vibration isolation unit is hinged with the top object carrying plate, the two simple support beams 1 are oppositely arranged on two sides of the bottom hinged plate, and the top end of each simple support beam 1 is hinged with one side of the bottom hinged plate. Other components and connection modes are the same as those of the third embodiment.
In this embodiment, the terminal surface area that the thing board was carried at the top is the biggest in load-bearing platform 4 for bear the weight of the thing, the thickness of middle part connecting plate is the biggest, is used for carrying the thing board to the top and plays supporting role, plays certain guide effect simultaneously, and the bottom articulated slab can suitably increase the incision in both sides according to the thickness of guide bar 3, avoids simply supported beam 1 to cause the interference with the pin joint edge after the deformation.
The fifth concrete implementation mode: the present embodiment will be described with reference to fig. 1 to 4, and the present embodiment further defines the top carrier plate according to the fourth embodiment, and in the present embodiment, the top carrier plate is a circular plate or a polygonal plate. The other components and the connection mode are the same as those of the fourth embodiment.
In this embodiment, the top carrier plate is related to the number of the vibration isolation units, and if the top carrier plate is a circular plate, the number of the vibration isolation units is at least four, and if the top carrier plate is a polygonal plate, one vibration isolation unit should be disposed on the side wall where each side of the end surface of the polygonal plate is located.
The sixth specific implementation mode: the present embodiment will be described with reference to fig. 1 to 4, and further limited to the vibration damping unit according to the fourth embodiment, the vibration damping unit according to the present embodiment includes a linear spring 5 and a spring seat 6, one end of the linear spring 5 is hinged to an outer side wall of the top carrier plate, the other end of the linear spring 5 is hinged to the spring seat 6, and the spring seat 6 is fixed to a fixed wall. The other components and the connection mode are the same as the fifth embodiment mode.
In the embodiment, the linear spring 5 is used for absorbing the amplitude generated after the platform is stressed, the amplitude is gradually compressed horizontally along with the linear spring 5, the optimal vibration isolation effect is achieved, the linear spring 5 is obliquely arranged in the initial state of the device, and the top surface of the bearing platform 4 is higher than the plane position of all the spring seats 6.
The seventh embodiment: the present embodiment is described with reference to fig. 1 to 4, and is further limited to the simply supported beams 1 according to the fourth embodiment, in the present embodiment, the upper hinge point and the lower hinge point of each simply supported beam 1 are located on the same vertical line. The other components and the connection mode are the same as the fifth embodiment mode.
So set up, be favorable to guaranteeing when the simple beam 1 atress deformation, deformation is even.
The present invention is not limited to the above embodiments, and any person skilled in the art can make many modifications and equivalent variations by using the above-described structures and technical contents without departing from the scope of the present invention.
Principle of operation
When the vibration isolation device is used, a top object carrying plate in a bearing platform 4 is taken as an example as a square plate, 4 vibration isolation units are arranged, a sleeve is a quadrangular sleeve, a simply supported beam 1 is an arc plate with the length of L, and the initial geometric defect is q0 (note: q0/L is less than 0.05 when q0 is not loaded), firstly, all parts are assembled according to the connection relation in the first to seventh concrete implementation modes, a heavy object is applied to the top of the bearing platform 4, the bearing platform 4 is stressed to vertically move downwards along a guide rod 3, meanwhile, a linear spring 5 in each vibration isolation unit also swings downwards and compresses by taking a spring seat 6 as the axial direction, the amplitude generated after the bearing platform 4 is stressed is absorbed, meanwhile, two simply supported beams 1 positioned at the lower part of the bearing platform 4 are also bent towards the side far away from the guide rod 3, the stress amplitude of the bearing platform 4 is absorbed, and the bearing platform 4 is supported, based on the quasi-zero stiffness vibration isolator, a displacement transmissibility curve is obtained, as shown in figure 5. It can be seen from the figure that the quasi-zero stiffness vibration isolator using the simply supported beam 1 as the positive stiffness bearing element can obtain lower vibration isolation frequency. The quasi-zero stiffness vibration isolator designed by the invention is made of common engineering materials, and is economical and feasible.
The quasi-zero stiffness vibration isolator designed based on the method obtains a comparison graph of a quasi-zero stiffness force displacement curve and a stiffness displacement curve of a three-spring design and the design, as shown in the attached drawings 6 and 7, it can be seen that if vertical springs with the same length are adopted to replace a simply supported beam, and inclined springs with the same length are adopted, and the same laying mode is adopted, the quasi-zero stiffness interval obtained by the design is wider than that of the three-spring design. Moreover, for the three-spring design, if the bearing capacity is increased, a spring with higher rigidity needs to be adopted, and for the design, the width and the thickness of the simply supported beam can be slightly adjusted.
Claims (7)
1. The utility model provides an use zero accurate rigidity isolator of unstability simple beam as positive rigidity carrier element which characterized in that: the quasi-zero stiffness vibration isolator comprises two simply supported beams (1), a lower hinged seat (2), a guide rod (3), a bearing platform (4), a plurality of vibration isolation units and a base (7);
the guide rod (3) is vertically arranged on the base (7), one end of the guide rod (3) is fixedly connected on the upper surface of the base (7), the lower hinged seat (2) is sleeved on the lower part of the guide rod (3), the lower hinged seat (2) is fixedly connected on the upper surface of the base (7), the bearing platform (4) is sleeved on the upper part of the guide rod (3), the bearing platform (4) is connected with the guide rod (3) in a sliding way, the two simply supported beams (1) are oppositely arranged at the two sides of the bearing platform (4), one end of each simple support beam (1) is hinged with the lower part of the polygonal bearing platform (4), the other end of each simple support beam (1) is hinged with the lower hinged seat (2), a plurality of vibration isolation units are equidistantly arranged on the outer side wall of the bearing platform (4) along the circumferential direction, and one end of each vibration isolation unit is hinged with the bearing platform (4), and the other end of each vibration isolation unit is fixedly connected with the fixed wall.
2. The quasi-zero stiffness vibration isolator with the unstabilized simply supported beam as the positive stiffness load bearing member according to claim 1, wherein: the simply supported beam (1) is of an arc-shaped plate structure.
3. The quasi-zero stiffness vibration isolator with the unstabilized simply supported beam as the positive stiffness load bearing member according to claim 2, wherein: articulated seat (2) include fixed plate and two supporting seats down, and the processing of the center department of fixed plate top surface has the through-hole, and two supporting seats set up in the below of fixed plate, and two supporting seats set up along the axis of through-hole relatively, and the lower fixed surface of every supporting seat and fixed plate is connected, and the fixed plate passes through the through-hole cover to be established in the lower part of guide bar (3), is equipped with two pin joints on the fixed plate, and every pin joint corresponds the setting with a simple beam (1).
4. The quasi-zero stiffness vibration isolator with the unstabilized simply supported beam as the positive stiffness load bearing member according to claim 3, wherein: the bearing platform (4) comprises a top loading plate, a middle connecting plate and a bottom hinged plate which are coaxially arranged from top to bottom in sequence, the top loading plate is fixedly connected on the upper surface of the middle connecting plate, the middle connecting plate is fixedly connected on the upper surface of the bottom hinged plate, a first sliding through hole is processed at the center of the upper surface of the top loading plate, a second sliding through hole is processed at the center of the upper surface of the middle connecting plate, a third sliding through hole is processed at the center of the upper surface of the bottom hinged plate, and the aperture of the first sliding through hole, the second sliding through hole and the third sliding through hole is the same, a plurality of vibration isolation units are arranged on the outer side wall of the top loading plate at equal intervals along the circumferential direction, one end of each vibration isolation unit is hinged with the top loading plate, two simply supported beams (1) are oppositely arranged on two sides of the bottom hinging plate, and the top end of each simply supported beam (1) is hinged with one side of the bottom hinging plate.
5. The quasi-zero stiffness vibration isolator with the unstabilized simply supported beam as the positive stiffness load bearing member according to claim 4, wherein: the top carrying plate is a circular plate or a polygonal plate.
6. The quasi-zero stiffness vibration isolator with the unstabilized simply supported beam as the positive stiffness load bearing member according to claim 5, wherein: the vibration isolation unit comprises a linear spring (5) and a spring seat (6), one end of the linear spring (5) is hinged to the outer side wall of the top loading plate, the other end of the linear spring (5) is hinged to the spring seat (6), and the spring seat (6) is fixedly connected to the fixed wall.
7. The quasi-zero stiffness vibration isolator with the unstabilized simply supported beam as the positive stiffness load bearing member according to claim 6, wherein: and the upper hinge point and the lower hinge point of each simple supporting beam (1) are positioned on the same vertical line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110679555.3A CN113323979B (en) | 2021-06-18 | 2021-06-18 | Quasi-zero stiffness vibration isolator with unstability simply supported beam as positive stiffness bearing element |
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| CN202110679555.3A CN113323979B (en) | 2021-06-18 | 2021-06-18 | Quasi-zero stiffness vibration isolator with unstability simply supported beam as positive stiffness bearing element |
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| CN113323979B CN113323979B (en) | 2022-04-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114263697A (en) * | 2021-11-30 | 2022-04-01 | 大连理工大学 | Recoverable multi-step deformation buffering energy-absorbing metamaterial structure |
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| CN112576689A (en) * | 2020-12-04 | 2021-03-30 | 哈尔滨工程大学 | Low-frequency heavy-load quasi-zero stiffness vibration isolation device |
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| CN105179587A (en) * | 2015-06-30 | 2015-12-23 | 上海交通大学 | Multi-freedom-degree low-frequency large-load all-metal passive vibration isolator |
| CN109505918A (en) * | 2018-12-27 | 2019-03-22 | 哈尔滨工业大学 | A kind of quasi-zero stiffness vibration isolators based on translot spring |
| CN110588695A (en) * | 2019-07-30 | 2019-12-20 | 同济大学 | Quasi-zero rigidity secondary suspension system of railway vehicle |
| CN110388408A (en) * | 2019-08-30 | 2019-10-29 | 国网湖南省电力有限公司 | A kind of negative stiffness can harmonize zero stiffness isolation mounting and its application method |
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| CN114263697A (en) * | 2021-11-30 | 2022-04-01 | 大连理工大学 | Recoverable multi-step deformation buffering energy-absorbing metamaterial structure |
| CN114263697B (en) * | 2021-11-30 | 2022-11-01 | 大连理工大学 | Recoverable multi-step deformation buffering energy-absorbing metamaterial structure |
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| CN113323979B (en) | 2022-04-29 |
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