阻尼輻射 的英文怎麼說
中文拼音 [zǔnífúshè]
阻尼輻射
英文
braking radiation-
The damping force of radiation is a jumpulse of the time rate of change of force
摘要「輻射阻尼力」是一種力變率的猝量。The calculated drafts covers the whole possible ship draft in the large amplitude motion ; secondly, the research creates and solves the ship large amplitude motion equations. on the one hand, the actual calculation takes into account the coupling between the different motion modes, on the other hand, in the process of calculation of the ship hydrodynamic coefficient, it considers the influence of the nonlinear factor. the hydrodynamic coefficient used in the calculation of froude - krylov force, diffraction force and radiation force changes instantaneously following the draft, and the hydrostatic buoyancy is computed very accurately for the instantaneous immerse hull
本文的研究分為二個部分：首先利用frank源匯法計算水動力系數，計算包括不同吃水時的附加質量和阻尼系數，吃水范圍涵蓋了船舶大幅度運動時所有可能的吃水；然後建立和求解船舶大幅度運動方程，在實際計算時一方面考慮了運動模態之間的耦合，另一方面在計算水動力時，考慮了非線性因素的影響。 froude - krylov力、輻射力、繞射力中的水動力系數隨吃水瞬時變化，靜浮力的計算精確到船體瞬時濕表面積，最後用四階龍格?庫塔方法在時域內求解船舶運動方程，並進行了載荷計算。3. it studied the radiation problem of tlp, and paid attention to the computation of added mass and added damping about tlp which cylinders are set as regular polygon
3 .研究了張力腿平臺的輻射問題，重點研究了浮筒柱正多邊形分佈情況下，總體輻射附加質量和阻尼系數計算問題。Matlab procedure is coded to compute the far - field sound pressure levels of the shell excited by radial point force. the influences of modal truncation, stringers, bulkheads and damping on the shell ' s far - field sound pressure are analyzed, laying down the basis for accurate analysis of the sound radiation from fluid - loaded reinforced double cylindrical shells
本文用matlab編製程序求解了單層殼在徑向激勵力作用下的遠場聲壓級，分析了模態截斷數、縱骨、艙壁板、結構阻尼等因素對殼體遠場輻射聲壓的影響，為準確計算加筋雙層殼在水下振動和聲輻射特性奠定了基礎。Various high - speed flexible mechanisms are used popularly in modern industries. due to their small damp, and the coupling of their large overall displacement and local distortion, they are ready to vibrate under exterior disturbance, which usually leads to intense acoustic radiation, then deteriorate the circumference
工業領域廣泛使用著以彈性連桿機構為主體的各種高速機構，這些機構由於阻尼小、整體大位移和局部彈性變形之間存在剛彈耦合，所以極容易受到外界的干擾發生振動並產生強烈的噪聲輻射，對周邊環境造成噪聲污染。Acoustic radiation resistance
聲輻射阻尼Effects of frozen soil layer and radiant damp of foundation soil on site earthquake responses are studied in detail. the seismic wave that is prerequisite at the seismic responses calculation of structure is obtained by using back analysis
研究了凍土層的存在、地基輻射阻尼等因素對場地地震反應的影響以及通過反演計算得到結構地震反應分析時所需要的地震波。Then the dynamic model of saturated soil layer caused by pile longitudinal vibration is founded. incorporated wave propagations into saturated soil layer, the characteristics of soil resistance factor and the mechanism of the radial damping are analyzed, as well as distributions of shear stress and pore pressure in saturated soil caused by pile vibration
然後利用上述解析解分析了飽和土層復阻抗，並從飽和土波動理論出發，建立了樁縱向振動引起的飽和土層振動模式，剖析了輻射阻尼產生機理，研究了樁縱向振動引起的飽和土層中剪應力及孔隙水壓力分佈。For the purpose of determining the basic problems such as the computed field and the mesh sizes in the finite element method, the paper first deals with the problems of a semi - infinite soil domain with radiation damping and material damping through the transient response of a single pile, which are used in the finite element method
本文首先利用單樁的瞬態響應來考察有限元計算中處理半無限土體的輻射阻尼和材料阻尼問題，以便確定有限元計算區域大小，網格尺寸等基本問題。It has been proved that some structural adjustments may somehow cut down on the surface radiation noise of the engine, thus bringing down the overall noise level. basically it means to increase the structural rigidity and the damping so as to reduce the structural surface response under the same exciting force
實踐表明，在結構上採取措施可以一定幅度地降低發動機的表面輻射噪聲，從而降低整機噪聲。控制的基本措施是增加結構剛度和阻尼，使得在同樣的激振力作用下減少結構表面響應。Through the comparison of analysis results in seismic response of construction structures, spring - damper boundary is better than viscous one in improving the computational precise and avoiding the disadvantages of fixed boundary which can not radiate energy
通過建築結構地震反應分析結果的比較，彈簧?阻尼器邊界比粘性邊界更好，提高了計算精度，並且克服了固定邊界無法輻射能量的缺點。分享友人