CN201635210U - Viscoelastic Composite Shape Memory Alloy Damper - Google Patents
Viscoelastic Composite Shape Memory Alloy Damper Download PDFInfo
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- CN201635210U CN201635210U CN 201020110154 CN201020110154U CN201635210U CN 201635210 U CN201635210 U CN 201635210U CN 201020110154 CN201020110154 CN 201020110154 CN 201020110154 U CN201020110154 U CN 201020110154U CN 201635210 U CN201635210 U CN 201635210U
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- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 34
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- 229910045601 alloy Inorganic materials 0.000 claims abstract description 24
- 238000013016 damping Methods 0.000 claims abstract description 24
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- 230000002093 peripheral effect Effects 0.000 claims description 4
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- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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- 239000003190 viscoelastic substance Substances 0.000 description 1
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Abstract
本实用新型公开了一种粘弹性复合型形状记忆合金阻尼器,包括矩形外筒、两块约束板件、中间板件和粘弹性阻尼板构成的传统板式两层粘弹性阻尼器,在传统的板式两层粘弹性阻尼器中部预设孔位,该预设孔位分别位于矩形外筒、约束板件、中间板件和粘弹性阻尼板上,其中,约束板件上的预设孔位的直径大于中间板件和矩形外筒上预设孔位的直径;预设孔位内设一竖向导杆,在上下两块约束板件与矩形外筒之间分别设有平行的两组SMA合金丝,每组SMA合金丝连接于矩形外筒侧壁与竖向导杆之间。该阻尼器具有多级耗能的特点,具有自适应性,耗能能力强,工作性能稳定,其参数可以方便地调节,且形式简单,可在底部框架上部砖房等建筑物的新建与改建中推广应用。
The utility model discloses a viscoelastic composite shape memory alloy damper, which comprises a traditional plate-type two-layer viscoelastic damper composed of a rectangular outer cylinder, two constraining plates, a middle plate and a viscoelastic damping plate. The preset holes in the middle of the plate-type two-layer viscoelastic damper are respectively located on the rectangular outer cylinder, the constraining plate, the middle plate and the viscoelastic damping plate, wherein the preset holes on the constraining plate are The diameter is larger than the diameter of the preset hole on the middle plate and the rectangular outer cylinder; a vertical guide rod is set in the preset hole, and two sets of parallel SMA alloys are respectively arranged between the upper and lower restraining plates and the rectangular outer cylinder. Wires, each group of SMA alloy wires is connected between the side wall of the rectangular outer cylinder and the vertical guide rod. The damper has the characteristics of multi-level energy consumption, self-adaption, strong energy consumption capacity, stable working performance, its parameters can be adjusted conveniently, and its form is simple. Promote applications.
Description
技术领域technical field
本实用新型涉及一种被动耗能装置,尤其是一种具有自适应能力的粘弹性复合型形状记忆合金(SMA)阻尼器。The utility model relates to a passive energy consumption device, in particular to a viscoelastic composite shape memory alloy (SMA) damper with self-adaptive capability.
背景技术Background technique
目前,已有的被动耗能装置主要包括:粘滞型、粘弹性型、金属屈服型、摩擦型等几类。传统的板式两层粘弹性阻尼器,一般包括一个外壳,外壳内设有两块约束板件和一块中间板件,约束板件和中间板件之间有两层粘弹性阻尼板,在约束板件和中间板件的露出部位有连接孔,在反复轴向力的作用下,约束板件与中间板件产生相对运动,使粘弹性阻尼板产生往复剪切变形,从而以吸热方式耗散运动能量。At present, the existing passive energy dissipation devices mainly include: viscous type, viscoelastic type, metal yield type, friction type and so on. The traditional plate-type two-layer viscoelastic damper generally includes a shell, which is equipped with two constraining plates and an intermediate plate, and there are two layers of viscoelastic damping plates between the constraining plate and the intermediate plate. There are connecting holes on the exposed parts of the middle plate and the middle plate. Under the action of repeated axial force, the restraint plate and the middle plate will move relative to each other, causing the viscoelastic damping plate to produce reciprocating shear deformation, thereby dissipating heat in the form of heat absorption. Movement energy.
不同类型的阻尼器具有不同的耗能机理:粘滞型和粘弹性型耗能装置主要利用材料与速度相关的特性耗能,而对于金属屈服型、摩擦型耗能装置则主要利用材料在大变形下的滞回耗能来消散地震能量。大量的研究都表明合理的选用阻尼器可有效地提高结构的抗震性能,然而,目前已有的阻尼装置普遍存在着一些缺点:如粘弹性阻尼器的材料受环境影响较大;粘滞阻尼器的维护不变且使用综合费用较高;摩擦阻尼器在长期应用过程中其可靠性会下降;金属阻尼器会产生过大的塑性变形而无法恢复等问题。Different types of dampers have different energy dissipation mechanisms: viscous and viscoelastic energy dissipation devices mainly use the characteristics of materials related to speed to dissipate energy, while metal yield type and friction type energy dissipation devices mainly use materials to dissipate energy in large Hysteretic energy dissipation under deformation to dissipate seismic energy. A large number of studies have shown that reasonable selection of dampers can effectively improve the seismic performance of structures. However, there are some shortcomings in the existing damping devices: for example, the materials of viscoelastic dampers are greatly affected by the environment; viscous dampers The maintenance of the friction damper remains unchanged and the comprehensive cost of use is high; the reliability of the friction damper will decrease during the long-term application process; the metal damper will produce excessive plastic deformation and cannot be restored.
形状记忆合金作为一种智能材料,因其具有超弹性性能和形状记忆效应,为土木工程振动控制领域提供了新的研究方向,然而如何利用形状记忆合金的超弹性性能开发研制出一种耗能能力强,同时具有自复位功能,结构形式简单,便于工程应用的被动耗能阻尼器仍是目前面临的一个具有挑战性的问题。As a kind of intelligent material, shape memory alloy provides a new research direction for the field of civil engineering vibration control because of its superelasticity and shape memory effect. However, how to use the superelasticity of shape memory alloy to develop a A passive energy dissipation damper with strong ability, self-resetting function, simple structure and convenient engineering application is still a challenging problem.
发明内容Contents of the invention
为了利用形状记忆合金材料并克服现有的耗能装置耗能能力不理想的问题,本实用新型的目的在于,提供一种粘弹性复合型形状记忆合金阻尼器,该阻尼器采用两种耗能元件共同工作,具有较强的耗能能力,可方便的应用于底部框架上部砖房结构的振动控制中。In order to use shape memory alloy materials and overcome the problem of unsatisfactory energy dissipation capacity of existing energy dissipation devices, the purpose of this utility model is to provide a viscoelastic composite shape memory alloy damper, which adopts two kinds of energy dissipation The components work together, have strong energy dissipation capacity, and can be conveniently applied to the vibration control of the upper brick building structure of the bottom frame.
为了实现上述任务,本实用新型解决其技术问题所采用的技术方案是:In order to realize above-mentioned task, the technical solution that the utility model solves its technical problem adopts is:
一种粘弹性复合型形状记忆合金阻尼器,包括矩形外筒、两块约束板件、中间板件和粘弹性阻尼板构成的传统板式两层粘弹性阻尼器,其特征在于,在传统的板式两层粘弹性阻尼器中部预设孔位,该预设孔位分别位于矩形外筒、约束板件、中间板件和粘弹性阻尼板上,其中,约束板件上的预设孔位的直径大于中间板件和矩形外筒上的预设孔位的直径;在预设孔位内设一竖向导杆,在上下两块约束板件与矩形外筒之间分别设有平行的两组SMA(Shape Memory Alloy)合金丝,每组SMA合金丝连接于矩形外筒侧壁与竖向导杆之间。A viscoelastic composite shape memory alloy damper, comprising a traditional plate-type two-layer viscoelastic damper composed of a rectangular outer cylinder, two constraining plates, an intermediate plate and a viscoelastic damping plate, characterized in that, in the traditional plate-type The preset holes in the middle of the two-layer viscoelastic damper are respectively located on the rectangular outer cylinder, the constraining plate, the middle plate and the viscoelastic damping plate, wherein the diameter of the preset holes on the constraining plate is It is larger than the diameter of the preset hole on the middle plate and the rectangular outer cylinder; a vertical guide rod is set in the preset hole, and two sets of parallel SMAs are respectively arranged between the upper and lower restraint plates and the rectangular outer cylinder. (Shape Memory Alloy) alloy wire, each group of SMA alloy wire is connected between the side wall of the rectangular outer cylinder and the vertical guide rod.
本实用新型的其它特点是:Other features of the utility model are:
所述的矩形外筒内侧的四周端部设有L型连接件;L-shaped connectors are provided at the peripheral ends of the inner side of the rectangular outer cylinder;
所述的每组SMA合金丝中的一根承受拉力,而另一根承受压力。One of each set of SMA alloy wires is under tension, while the other is under compression.
所述的每组SMA合金丝连接于矩形外筒四周端部的L型连接件与竖向导杆之间。Each group of SMA alloy wires is connected between the L-shaped connectors at the peripheral ends of the rectangular outer cylinder and the vertical guide rods.
所述的每组SMA合金丝呈对称布置。Each group of SMA alloy wires is arranged symmetrically.
本实用新型的粘弹性复合型形状记忆合金阻尼器,采用了分级控制的思路。在小震和中震作用下仅由粘弹性耗散能量,而在大震作用下则由粘弹性阻尼耗能和SMA合金丝滞回耗能共同耗散地震能量。阻尼器具有多级耗能的特点,自适应性强,其主要性能包括等效阻尼、刚度等都可以随结构振动过程中的不同变形情况发生改变;且耗能能力强,工作性能稳定,结构形式简单,其参数可以方便的调节,方便制造与安装,两种耗能机制共同作用,具有较强的耗能能力。可在底部框架上部砖房等建筑物的新建与改建中推广应用。The viscoelastic composite shape memory alloy damper of the utility model adopts the idea of hierarchical control. Under the action of small earthquakes and moderate earthquakes, the energy is only dissipated by viscoelasticity, while under the action of large earthquakes, the seismic energy is dissipated jointly by viscoelastic damping energy and SMA alloy wire hysteresis energy. The damper has the characteristics of multi-level energy consumption and strong adaptability. Its main performance, including equivalent damping and stiffness, can change with different deformation conditions during the vibration process of the structure; it has strong energy dissipation capacity, stable working performance, and structural The form is simple, its parameters can be adjusted conveniently, and it is convenient to manufacture and install. The two energy consumption mechanisms work together to have a strong energy consumption capacity. It can be popularized and applied in the new construction and renovation of buildings such as brick houses with bottom frames and upper parts.
附图说明Description of drawings
图1是本实用新型的原理图。Fig. 1 is a schematic diagram of the utility model.
图2是图1是俯视图。Fig. 2 is a top view of Fig. 1 .
图3是图1的I-I剖视图。Fig. 3 is an I-I sectional view of Fig. 1 .
图中的标号分别表示:1、矩形外筒,2、形状记忆合金(SMA)合金丝,3、竖向导杆,4、预设孔位,5、粘弹性阻尼板,6、L形连接件,7、M12螺栓,8、约束钢板,9、中间钢板。The numbers in the figure respectively represent: 1. Rectangular outer cylinder, 2. Shape memory alloy (SMA) alloy wire, 3. Vertical guide rod, 4. Preset hole position, 5. Viscoelastic damping plate, 6. L-shaped connector , 7, M12 bolts, 8, restraint steel plate, 9, the middle steel plate.
下面结合附图对本实用新型作进一步地详细说明。Below in conjunction with accompanying drawing, the utility model is described in further detail.
具体实施方式Detailed ways
参见图1~3,本实用新型的粘弹性复合型形状记忆合金阻尼器,包括矩形外筒1、两块约束板件8、中间板件9和粘弹性阻尼板5构成的传统板式两层粘弹性阻尼器,在传统的板式两层粘弹性阻尼器中部预设孔位4,该预设孔位4分别位于矩形外筒1、约束板件8、中间板件9和粘弹性阻尼板5上,预设孔位4内设一竖向导杆3,其中,约束板件8上的预设孔位4的直径大于中间板件9和矩形外筒1上的预设孔位4;在上下两块约束板件8与矩形外筒1之间分别设有平行的两组SMA合金丝2,每组SMA合金丝2连接于矩形外筒1侧壁与竖向导杆3之间。Referring to Figures 1 to 3, the viscoelastic composite shape memory alloy damper of the present invention includes a traditional plate-type two-layer viscoelastic damper composed of a rectangular outer cylinder 1, two constraining
内侧的四周设有L型连接件6,L形连接件6通过M12螺栓7与矩形外筒1的四周端部连接牢固。两层约束板件8开设的预设孔位4与上下两层粘弹性阻尼板5上的预设孔位4直径相同,其尺寸相同均按现行规范规定的弹塑性层间最大位移取值;中间板件9上的预设孔位4与矩形外筒1、约束板件8、粘弹性阻尼板5上的位置相同,但其尺寸不同,具体数值可按现行规范规定的弹性层间最大位移取值。预设孔位4处设竖向导杆3,SMA合金丝2两端分别与导杆3及矩形外筒1端部的L形连接件6连接,每组SMA合金丝呈对称布置。L-
如图2所示,粘弹性阻尼板的预设孔位4纵、横向均置中布置。约束板件8和中间板件9外伸部分设有连接孔可与外部支撑连接。As shown in Figure 2, the preset holes 4 of the viscoelastic damping plate are arranged in the center both vertically and horizontally. The constraining
如图3所示的剖面图,粘弹性阻尼板5采用双层粘弹性材料;L形连接件6在矩形外筒1的内侧四周连接。As shown in the sectional view of FIG. 3 , the
上述实例中,矩形外筒1、中间板件9和约束板件8的材料选用Q235钢,内部的粘弹性阻尼板5的厚度为13mm,中间板件9和约束板件8的厚度为8mm。In the above example, the rectangular outer cylinder 1, the middle plate 9 and the
本实用新型采用粘弹性阻尼板和SMA合金丝两种耗能元件,利用SMA合金丝的超弹性滞回耗能的特点,通过调节固定端部L形连接件处的螺丝可对形状记忆合金施加不同的预应变。阻尼器在工作过程中,上、下约束板件下部固定,可认为其不参与运动,仅考虑中间板件的运动;在小震和中震作用下仅粘弹性阻尼板产生阻尼耗能,在大震作用下,中间板件9运动位移加大触及竖向导杆3,SMA合金丝则随导杆一起运动,每组合金丝中有一根承受拉力而另一根合金丝承受压力从而形成拉压型SMA合金丝复合阻尼器。The utility model adopts viscoelastic damping plate and SMA alloy wire two kinds of energy consumption elements, utilizes the characteristic of superelastic hysteretic energy consumption of SMA alloy wire, and can apply energy to the shape memory alloy by adjusting the screw at the L-shaped connector at the fixed end. different prestrains. During the working process of the damper, the lower parts of the upper and lower constraining plates are fixed, so it can be considered that they do not participate in the movement, and only the movement of the middle plate is considered; under the action of small and moderate earthquakes, only the viscoelastic damping plate produces damping energy, and in Under the action of a large earthquake, the movement displacement of the middle plate 9 increases and touches the
矩形外筒1和中间板件9的预设孔位4直径小于约束板件8、粘弹性阻尼板5的直径尺寸,在小震和中震作用下,中间板件9的运动位移小于约束板件8和粘弹性阻尼板5的预设孔位4的尺寸,无法触及竖向导杆3,这时仅为粘弹性耗能;而在大震作用下,当中间板件3的运动位移超过某一数值时,则触及预设孔位4边缘从而带动导杆3运动,而导杆3运动将带动SMA合金丝往复运动实现滞回耗能。The diameter of the preset hole 4 of the rectangular outer cylinder 1 and the intermediate plate 9 is smaller than the diameter of the constraining
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Cited By (12)
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CN102425246A (en) * | 2011-10-19 | 2012-04-25 | 沈阳建筑大学 | Cable-stayed shape memory alloy multi-purpose damper in multi-dimensional space |
CN102720283A (en) * | 2012-06-21 | 2012-10-10 | 河北工业大学 | Superelastic shape memory alloy and friction cascade combined damper |
CN104947825A (en) * | 2015-06-12 | 2015-09-30 | 云南震安减震科技股份有限公司 | Viscoelastic damper and preparing method thereof |
CN105178471A (en) * | 2015-09-25 | 2015-12-23 | 郑州大学 | Self-reset viscous-elastic damping wall |
CN105625599A (en) * | 2016-03-25 | 2016-06-01 | 大连理工大学 | Reset shape memory alloy-extrusion type lead composite energy consumption damper |
CN106639459A (en) * | 2016-11-02 | 2017-05-10 | 西安建筑科技大学 | Shape memory alloy self-restoration rubber damper |
CN109372141A (en) * | 2018-11-22 | 2019-02-22 | 东南大学 | Variable Damping Viscoelastic Plate Damper |
CN112538906A (en) * | 2020-10-28 | 2021-03-23 | 四川极速衍生科技发展有限公司 | Pure bending moment yielding damper device |
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CN113653394A (en) * | 2021-08-25 | 2021-11-16 | 北京工业大学 | Self-resetting SMA stranded wire composite magnetorheological damping support |
CN114645581A (en) * | 2022-04-16 | 2022-06-21 | 北京工业大学 | Displacement-amplified self-reset damper based on shape memory alloy material |
CN115126323A (en) * | 2022-07-29 | 2022-09-30 | 西安建筑科技大学 | Fully-assembled viscoelastic-shape memory alloy damper and damping method thereof |
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CN102425246A (en) * | 2011-10-19 | 2012-04-25 | 沈阳建筑大学 | Cable-stayed shape memory alloy multi-purpose damper in multi-dimensional space |
CN102425246B (en) * | 2011-10-19 | 2014-04-23 | 沈阳建筑大学 | Cable-stayed shape memory alloy multi-purpose damper in multi-dimensional space |
CN102720283A (en) * | 2012-06-21 | 2012-10-10 | 河北工业大学 | Superelastic shape memory alloy and friction cascade combined damper |
CN104947825A (en) * | 2015-06-12 | 2015-09-30 | 云南震安减震科技股份有限公司 | Viscoelastic damper and preparing method thereof |
CN105178471A (en) * | 2015-09-25 | 2015-12-23 | 郑州大学 | Self-reset viscous-elastic damping wall |
CN105625599A (en) * | 2016-03-25 | 2016-06-01 | 大连理工大学 | Reset shape memory alloy-extrusion type lead composite energy consumption damper |
CN106639459A (en) * | 2016-11-02 | 2017-05-10 | 西安建筑科技大学 | Shape memory alloy self-restoration rubber damper |
CN109372141A (en) * | 2018-11-22 | 2019-02-22 | 东南大学 | Variable Damping Viscoelastic Plate Damper |
CN112538906A (en) * | 2020-10-28 | 2021-03-23 | 四川极速衍生科技发展有限公司 | Pure bending moment yielding damper device |
CN112538906B (en) * | 2020-10-28 | 2021-11-02 | 四川极速衍生科技发展有限公司 | Pure bending moment yielding damper device |
CN113463964A (en) * | 2021-07-15 | 2021-10-01 | 昆明理工大学 | Axial step viscoelastic damper |
CN113653394A (en) * | 2021-08-25 | 2021-11-16 | 北京工业大学 | Self-resetting SMA stranded wire composite magnetorheological damping support |
CN114645581A (en) * | 2022-04-16 | 2022-06-21 | 北京工业大学 | Displacement-amplified self-reset damper based on shape memory alloy material |
CN114645581B (en) * | 2022-04-16 | 2023-11-24 | 北京工业大学 | Displacement amplification type self-resetting damping device based on shape memory alloy material |
CN115126323A (en) * | 2022-07-29 | 2022-09-30 | 西安建筑科技大学 | Fully-assembled viscoelastic-shape memory alloy damper and damping method thereof |
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