• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a damping plate on the basis of a negative Poisson's ratio structure, which comprises a base plate (1) and a damping material (2). A negative Poisson's ratio structure is fixed on the base plate (1), the cross section of the structure has a plurality of holes (4), a plurality of holes are also formed between the structure and the plate, and said holes are filled with the damping material (2). By using the auxetic compression deformation characteristics of the damping plate on the basis of a negative Poisson's ratio structure, the deformation of the structure allows the material away from the base plate to have sufficient deformation, so that the damping material is fully utilized, the vibration energy dissipating effect is also improved, and the vibration characteristics of the damping plate are significantly optimized.
    公开号:FR3016945A1
    申请号:FR1550608
    申请日:2015-01-27
    公开日:2015-07-31
    发明作者:Xiqin Ma；Kui Yu；Jiaoxia Sun；Yang Liu；Jun Wu；Xiaobiao Li；Changqi Yang
    申请人:INST HYDRAULIQUE DU SUD OUEST UNIVERSITE DE JIAOTONG DE CHONGQING；
    IPC主号:
    专利说明:

    [0001] TECHNICAL FIELD The invention relates to improvements of a shock-absorbing material, in particular a damping plate on the basis of a negative-Poisson-ratio structure, which belongs to the technical field of damping materials.
    [0002] Background of the art In many cases, it is necessary to deal with shocks, for example, to vehicles, aerospace, dams, bridges, other anti-collision systems, and so on. The use of shock absorbing materials is a common mode of damping, and a damping plate formed mainly of damping material is the most common. The ordinary damping plate structure shown in FIG. 1 is composed of a base plate 1 which may be of steel or aluminum, and the damping material 2 on the base plate which may be of asphalt, rubber, etc. The problem with this conventional plate is that the deformation of damping material is insufficient, the energy dissipation is very poor, and only the damping material near the base plate dissipates the energy during its deformation.
    [0003] Content of the present invention For the problems of the state of the art, the object of the invention is to provide a negative Poisson's ratio damping plate, thanks to the structure of the damping plate, such so that the material is sufficiently deformed, and the dissipation of energy by vibration is sufficient. The technical scheme of the present invention is such that a plate on the basis of a negative Poisson-Poisson structure comprises a base plate and a damping structure. The negative Poisson's ratio structure is fixed on the base plate, the cross section of the structure has a plurality of holes, a plurality of holes are also formed between the structure and the plate and a damping material is a filling in said holes. The cross-section of the negative Poisson-weight structure includes, but is not limited to, several structural forms: In a first mode, the cross-section of said negative Poisson-weight structure is honeycomb shaped, that is, the honeycomb defines said holes. In a second mode, the cross-section of said negative Poisson-Poisson structure is in the form of a grid, that is to say that the grid defines said holes. In a third mode, two groups of cell structures intertwine to form the cross-section of said negative Poisson-Poisson structure, which cellular structures define said holes. Said base plate is made of steel or aluminum (can be any material or structure), and said damping material is rubber or asphalt (can also be other buffering materials). In comparison with the existing technique, the invention has the following advantages: By using the auxetic compression deformation characteristics of the damping plate on the basis of a negative Poisson's ratio structure, the deformation of the structure permits to the material away from the base plate to have sufficient deformation, so that the damping material is used fully, the effect of dissipation of the vibration energy is also improved, and the vibration characteristics of the damping plate are clearly optimized. Fig. 1 - Diagram of the Structure of the Damping Plate of the Existing Technique Figure 2 - Diagram of the Structure of the Damping Plate 35 of Example 1 of the Invention Figure 3 - Diagram of the Structure of the Damping Plate Example 4 of the invention Figure 4 - Diagram of the structure of the damping plate of Example 3 of the invention Specific embodiments The Poisson's ratio is the ratio between the transversal stress of a material and the longitudinal stress in absolute value, also called lateral deformation factor, and it is an elastic constant reflecting the transverse deformation of a material. Normally, a material has a positive Poisson's ratio, that is, if the material is longitudinally stretched, there is contraction in a transverse dimension. If when a material is longitudinally stretched, the transverse dimension increases, this material is a negative Poisson-weight material. The invention is based on this characteristic of negative Poisson-weight material. It can be seen in FIG. 2, FIG. 3 and FIG. 4 that, according to the invention, the damping plate comprises a base plate 1 and a damping material 2. The structure 3 of a material with negative Poisson's coefficient 20 is fixed on the base plate, the cross section of the structure has a plurality of holes 4, holes 4 are also formed between the structure 3 and the plate 1, and a damping material 2 is a filling in said holes. Said base plate 1 can be of any material, for example steel or aluminum. Said damping material 2 is preferably rubber or asphalt, and may be another buffer material. The holes in the cross-section of the negative Poisson's Coe structure include, but are not limited to, several structural forms: In a first mode, the cross section of said negative Poisson's Coe structure is nest-shaped. bees, i.e., the honeycomb defines said holes, as in the structure shown in FIG. 4. In a second embodiment, the cross-section of said negative Poisson-Poisson structure is shaped grid which defines said holes and which can also be divided into triangles by the partition plate, as in the structure illustrated in Figure 2. In a third mode, two groups of cellular structures intertwine and form the cross section of said negative Poisson's ratio structure, and the cell structures define said holes as in the structure shown in FIG. 3. The damping plate In addition to the base plate structure in a single direction, the present invention may also have an upper substrate and a lower substrate, the negative Poisson-Poisson structure being located between the two.
    [0004] Finally, it will be appreciated that the above examples are only used to illustrate the technical scheme of the present invention and are not restrictive. Although embodiments of the invention have been described in detail, the common technical personnel in the field will understand that the technical scheme of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical scheme of the present invention, which are covered by the claims.
    权利要求:
    Claims (6)
    [0001]
    REVENDICATIONS1. A damping plate based on a negative Poisson's ratio structure, which comprises a base plate and a damping material, characterized in that a negative Poisson's ratio structure is fixed on the base plate, the cross section of the structure comprises a plurality of holes, a plurality of holes are also formed between the structure and the base plate, and the holes are filled with the damping material.
    [0002]
    2. damping plate according to claim 1, characterized in that said cross section of the structure is honeycomb-shaped, that is to say that the honeycomb defines said holes.
    [0003]
    3. damping plate according to claim 1, characterized in that the cross section of said negative Poisson's structure is in the form of a grid, that is to say that the grid defines said holes.
    [0004]
    Damping plate according to claim 1, characterized in that the cell structures of two groups intertwine and form the cross-section of said negative Poisson-ratio structure, i.e. the cellular structures define said holes.
    [0005]
    The damping plate according to any one of claims 1 to 4, characterized in that said damping material is rubber or asphalt.
    [0006]
    6. damping plate according to any one of claims 1 to 5, characterized in that the base plate is steel or aluminum.
    类似技术:
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    同族专利:
    公开号 | 公开日
    CN103758904B|2016-03-09|
    CN103758904A|2014-04-30|
    FR3016945B1|2017-07-07|
    引用文献:
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    DE2425014B2|1974-05-24|1976-08-26|Vereinigte Flugtechnische Werke-Fokker GmbH, 2800 Bremen|PROCESS FOR MANUFACTURING LIGHTWEIGHT PANELS|
    CN100351074C|2005-10-12|2007-11-28|北京科技大学|Steel cellular sandwich vibration damping plate inuse for cars, and preparation method|
    CN102700704A|2012-05-30|2012-10-03|南京航空航天大学|Deformation skin for aircraft|
    CN202742715U|2012-06-29|2013-02-20|大连理工大学|Sandwiched bulletproof sandwich plate|
    CN203093156U|2012-11-14|2013-07-31|合肥朗胜新材料有限公司|Honeycomb paperboard with specially arranged fillers|CN104157186B|2014-07-30|2017-01-11|华南理工大学|Grid structure with zero Poisson ratio and compression method thereof|
    CN104763772B|2015-03-31|2017-03-08|华南理工大学|A kind of buffering energy-absorbing structure|
    CN106678221B|2016-07-09|2019-10-08|李萌|A kind of honeycomb and design method improving structural strength|
    CN106907418B|2017-01-20|2019-05-24|上海交通大学|Phonon crystal negative poisson's ratio honeycomb vibration isolation anti-impact device|
    US10343725B2|2017-03-03|2019-07-09|GM Global Technology Operations LLC|Automotive structural component and method of manufacture|
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    CN108172208A|2018-03-28|2018-06-15|贵州大学|A kind of locally resonant chirality honeycomb coating|
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    法律状态:
    2015-10-28| PLFP| Fee payment|Year of fee payment: 2 |
    2017-01-13| PLSC| Search report ready|Effective date: 20170113 |
    2017-05-19| PLFP| Fee payment|Year of fee payment: 3 |
    2018-05-29| PLFP| Fee payment|Year of fee payment: 4 |
    2019-09-27| ST| Notification of lapse|Effective date: 20190906 |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201410039347.7A|CN103758904B|2014-01-27|2014-01-27|A kind of damping sheet based on negative poisson ' s ratio structure|
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