Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Three-dimensional defect state viscoelastic phononic crystal type sound barrier based on 3D printing
The invention discloses a three-dimensional defect state viscoelastic phononic crystal type sound barrier based on 3D printing, which adopts a unit cell structure to characterize the directional array arrangement of atoms in natural crystals so as to realize the functions of sound absorption and noise reduction. According to the photonic crystal type sound barrier, an epoxy resin matrix is prepared layer by layer based on the 3D printing technology, stainless steel balls are used as dispersions, and the epoxy resin matrix comprises a structural middle plate with grooves in the upper face and the lower face, a top plate and a top cover plate; wherein the epoxy resin base plate and the stainless steel balls are combined and spliced in an assembly mode. According to the defect-state viscoelastic phononic crystal type sound barrier, a three-dimensional defect-state configuration is adopted, a local vocal cavity resonance mechanism is formed, traffic noise with the main noise frequency band ranging from 500 Hz to 2000 Hz of an expressway can be effectively attenuated to the maximum extent, the sound pressure level at the sound receiving position is reduced in a sound energy concentration mode, and the more effective noise reduction effect is achieved.
本发明公开了一种基于3D打印的三维缺陷态粘弹性声子晶体型声屏障，采用晶胞结构来表征天然晶体中原子的定向阵列排列，从而实现吸声降噪的功能。该声子晶体型声屏障基于3D打印技术逐层制得到环氧树脂基体，以不锈钢球为分散体，其中环氧树脂基体包括上下面均有凹槽的结构中间板、顶板和顶盖板；其中，环氧树脂基体板和不锈钢球采用装配式的方式组合拼装。本发明公开的采用缺陷态粘弹性声子晶体型声屏障采用三维缺陷态构型，形成局部声腔共振机制，可最大程度地对高速公路主要噪声频段500‑2000Hz的交通噪声予以有效衰减，通过声能集中的方式降低受声处的声压级，实现更有效的降噪效果。
Three-dimensional defect state viscoelastic phononic crystal type sound barrier based on 3D printing
The invention discloses a three-dimensional defect state viscoelastic phononic crystal type sound barrier based on 3D printing, which adopts a unit cell structure to characterize the directional array arrangement of atoms in natural crystals so as to realize the functions of sound absorption and noise reduction. According to the photonic crystal type sound barrier, an epoxy resin matrix is prepared layer by layer based on the 3D printing technology, stainless steel balls are used as dispersions, and the epoxy resin matrix comprises a structural middle plate with grooves in the upper face and the lower face, a top plate and a top cover plate; wherein the epoxy resin base plate and the stainless steel balls are combined and spliced in an assembly mode. According to the defect-state viscoelastic phononic crystal type sound barrier, a three-dimensional defect-state configuration is adopted, a local vocal cavity resonance mechanism is formed, traffic noise with the main noise frequency band ranging from 500 Hz to 2000 Hz of an expressway can be effectively attenuated to the maximum extent, the sound pressure level at the sound receiving position is reduced in a sound energy concentration mode, and the more effective noise reduction effect is achieved.
本发明公开了一种基于3D打印的三维缺陷态粘弹性声子晶体型声屏障，采用晶胞结构来表征天然晶体中原子的定向阵列排列，从而实现吸声降噪的功能。该声子晶体型声屏障基于3D打印技术逐层制得到环氧树脂基体，以不锈钢球为分散体，其中环氧树脂基体包括上下面均有凹槽的结构中间板、顶板和顶盖板；其中，环氧树脂基体板和不锈钢球采用装配式的方式组合拼装。本发明公开的采用缺陷态粘弹性声子晶体型声屏障采用三维缺陷态构型，形成局部声腔共振机制，可最大程度地对高速公路主要噪声频段500‑2000Hz的交通噪声予以有效衰减，通过声能集中的方式降低受声处的声压级，实现更有效的降噪效果。
Three-dimensional defect state viscoelastic phononic crystal type sound barrier based on 3D printing
基于3D打印的三维缺陷态粘弹性声子晶体型声屏障
WU HONGTAO (Autor:in) / MENG YING (Autor:in) / ZHOU LIJUN (Autor:in) / XUE CHUNMING (Autor:in) / ZHOU XIAOXU (Autor:in) / SUN BEI (Autor:in) / LIU BO (Autor:in) / DUAN YINGJIE (Autor:in) / NIU BINGQING (Autor:in) / ZHOU YAJUN (Autor:in)
15.10.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
| Europäisches Patentamt | 2020
The band gap of 1D viscoelastic phononic crystal
| British Library Online Contents | 2009