被壓制層 的英文怎麼說
中文拼音 [bèiyāzhìcéng]
被壓制層
英文
suppressed layer-
In addition, active constrained layer damping ( acld ) has attracted scholar ' s interests because it has the advantages of passive control and active control. the mechanism of vibration control of acld and the models of how to deal with the viscid - electric material are introduced. the finite element model of acld with ghm model is established in this paper
此外，主動層阻尼結構（ acld ）由於兼有被動控制和主動控制兩者之優點也引起了國內外學者的興趣，本文給出了主動層阻尼結構（約束層採用壓電材料）抑振的工作機理，介紹了處理粘彈性層（ vem ）的幾種模型，並採用ghm模型建立了主動層阻尼結構的有限元模型。Steel flat and tract steel are the special - purpose products that the country appoints, aluminum material in xinguan brand was honored the golden prize of china s fourth building decoration material exhibition. the zinc - plated steel colored coating board of electricity in runfa brand is jiangsu province famous brand product, which has been honored as provincial torch program project. the anti - fingerprint board in runfa brand has replaced imported products, and has been the major material of domestic electrical home appliances and automobile. various types of yarns and threads in runfa brand have been listed into the products that are exempt from inspection to export by users. the container ship equipped with satellite navigation system rated in 8000t is highly appreciated by international ships clients
球扁鋼履帶鋼是國家定點專用產品「鑫冠」牌鋁型材榮獲第四屆全國建築裝飾材料博覽會金獎「潤發」牌電鍍鋅鋼制彩色塗層板是江蘇省名牌產品，列為省級火炬計劃項目「潤發」牌耐指紋板取代進口產品，成為國內家電行業和汽車行業的主材料「潤發」牌各類紗線被列為用戶免檢產品製造的8000噸級裝有衛星導航系統的集裝箱輪，受到了國際船商的高度好評少無切削精密冷壓鑄造件港口機械汽車型材電子元件金屬製品高低壓成套電器等產品，技術含量高，新品系列不斷搶占市場。Hamilton ' s principle are used to obtain equations of motion, which are discretized using finite element method. the frequency dependent damping of viscoelastic layer is modeled using the golla - hughes - mctavish ( ghm ) method and the system is analyzed in the time domain. ghm increases the size of the original system by adding fictitious dissipation coordinates that account for the frequency dependent damping
本文採用ghm模型描述粘彈性阻尼材料的本構關系，根據哈密頓原理分別對附加主動約束阻尼層結構（ acld ）和主被動阻尼分離結構（ acupcld和acopcld ，其中acupcld結構是將壓電作動層貼于粘彈阻尼層的下面， acopcld結構是將被動約束層和壓電作動層分別貼于梁的上下表面）的梁結構建立了有限元模型，進而得到系統控制狀態方程。Associated with a practical example of pipeline crossing with directional drilling technique in yizheng - changling crude oil pipeline, this paper analyzes the characteristics of crossing through rocky stratum with directional drilling, deliberates the stratum status, drilling machine selection, drilling tool assembly, direction control, mud control ; drilling process as well as emergency dealing scenarios at the stages of guiding - hole drilling, aperture expanding and back - towing
摘要結合儀征長嶺原油管道洪湖長江定向鉆穿越工程實例，分析了管道定向鉆穿越長距離巖石層的特點，論述了定向鉆穿越巖石層的地層狀況、鉆具組合、控向措施、泥漿控制、鉆進工藝以及導向孔鉆進、擴孔、回拖階段的應急預案，針對在鉆導向孔過程中因泥漿壓力高、信號線多次出現被高壓泥漿沖壞、造成控向信號不穩定甚至中斷的情況，對信號線的安裝提出了改進措施。It is shown that vibration suppression efficiency of these kind of treatments depend much more on the viscoelastic layer thickness, material properties and the piezoelectric layer thickness. secondly, a linear quadratic regulator and output feedback are used to actively control vibration. it is shown that placing the active element on the opposite side of pcld or underneath pcld is capable of vibration suppression with lower control effort and more inherent damping
定義了主被動混合阻尼結構控制性能指標：被動抑振性能指標、主動抑振性能指標、控制能量指標和控制力性能指標；然後，基於狀態反饋最優控制律，根據定義的控制性能指標分析粘彈性阻尼層厚度、粘彈性阻尼材料參數、壓電作動層厚度對主被動混合阻尼結構振動控制性能的影響，得到了一些有價值的結論。分享友人