free vibration 【物理學】自由振動。
【物理學】自由振動。 “free“ 中文翻譯： adj. (freer; freest) 1.自由的，自 ...“vibration“ 中文翻譯： n. 1.振動，顫動；擺動；【物理學】振動。 2.(心的 ...“vibration free“ 中文翻譯： 無振“free flexural vibration“ 中文翻譯： 自由彎曲振動“free harmonic vibration“ 中文翻譯： 自由諧振; 自由諧振動“free vibration column test“ 中文翻譯： 室內土工試驗自振柱試驗; 自振柱試驗“free vibration method“ 中文翻譯： 自由振動法“free vibration mode“ 中文翻譯： 自由振動形式; 自由自整形式“free-damped vibration“ 中文翻譯： 自由阻尼振動“period of free vibration“ 中文翻譯： 自由自整周期“undamped free vibration“ 中文翻譯： 無阻尼自由振動“undamped-free vibration“ 中文翻譯： 無阻尼的自由振動“vibration free engine“ 中文翻譯： 消振式發動機“vibration free flight“ 中文翻譯： 無顫振的飛行“vibration-free engine“ 中文翻譯： 不產生振動的發動機; 消振發動機“vibration-free running“ 中文翻譯： 無振運轉“vibration， free harmonic“ 中文翻譯： 自由和諧振動“free（resonance）vibration column test“ 中文翻譯： 自(共)振柱試驗“vibration“ 中文翻譯： n. 1.振動，顫動；擺動；【物理學】振動。 2.(心的)震顫。 3.(思想情緒的)激動。 4.猶豫。 the amplitude of vibration 【物理學】振幅。 the vibration period ＝ the period of vibration 振動周期。 adj. -al “stochastic vibration, random vibration“ 中文翻譯： 隨機振動“are-free“ 中文翻譯： 不放電的“be free“ 中文翻譯： 空閑的,有空; 空閑的，有空“be free to“ 中文翻譯： 可以自由地去…“be free with“ 中文翻譯： 直爽, 坦白“for free“ 中文翻譯： 免費的; 免費地
free ware |
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The results of a 24 - story mega - frame structure with 4 spans were calculated by the universal finite element method of midas , the different structural character values such as structural free vibration periods , structural displacements and structural moments were compared , the influence of connection form of main frame beam - column on behaviors of mega - frame structure were discussed , and smoe reasonable suggestions were put forward to guide engineering practice 以一4跨24層巨型框架結構為例，采用通用有限元軟件midas ，對比分析了巨型框架結構的自振周期、位移與彎矩等受力特征值；探討了主框架梁柱布置對巨型框架受力性能的影響，提出了合理化建議以指導工程實踐。 |
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And free vibration frequencies of simple layer a electro - elastic plates re given . electro - elastic plates accompanied with normal material plates : firstly using the theories of simply supported and multilayered magneto - electro - elastic plates , without considering the magneto and electric effect , the general solution formulation of simply supported and multilayered plates are given 對于簡支壓電復合材料層合板問題，首先由簡支壓電壓磁彈性層合板問題的理論推導，不考慮其磁、電耦合效應，可以得到一般層合板的狀態變量表達式。 |
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The process of modal analysis and the subspace alternate theory are introduced . comparison results show that as a simplified method equivalent sandwich plate method is accurate in precision . it also proved the study of free vibration property of space grids adopt ansys software is reliable 通過對擬夾層板法和ansys模態分析的比較，表明了擬夾層板法作為一種簡化的計算方法，其精度是比較高的，同時也證明了采用ansys軟件進行網架自振特性研究的可靠性，在此基礎上采用ansys模態分析對網架固有振動特性進行了研究。 |
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The free vibration property of cable - truss structures is analyzed , as well as the parameter analysis . it is obvious to see the remarkable improvement of the frequency , however the scale of the height of masts has little effect on frequency . on the contrary , increasing the number of support has remarkable effect 本文通過5個算例分析了大跨度環形空腹索桁結構體系的自振特性，并對其自振特性進行了參數分析，結果表明，預應力的增加可以顯著提高結構的自振頻率，而桅桿高度比值的大小對結構的自振頻率影響不大。 |
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Based on the assumption of periodic rubbing force in rotor system , the rubbing forces onto each node of rotor system are estimated by modal expansion technique and the sub - harmonic decomposition of residual matrix between faulty and faulty - free vibration signals of rotor system through fft ( fast fourier transformation ) 基于轉子系統碰摩力的周期性假設，利用模態擴展方法，對故障和健康轉子系統振動信號的殘差矩陣進行傅立葉級數的分頻諧波近似，估算得到轉子軸承各節點的碰摩力。 |
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Secondly , to analyze seismic response of the concrete gravity dam , subspace iterative method was applied to compute free vibration period of the dam , time integration method was built up for the seismic time history analysis and formulation of coupled vibration of reservoir water and dam were also deduced 其次，針對混凝土重力壩的地震響應分析問題，采用子空間迭代法計算了大壩的自振周期，建立了地震時程分析的逐步積分方法，并且推導了庫水和壩體耦合振動的理論公式。 |
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Then the effect of cable arrangements to the structure dynamic behaviors was studied . the free vibration frequencies and dynamic internal forces of seven types of cable arrangements were calculated , and the conclusion that diagonal cables are sensitive to structure stiffness are obtained 通過對七種不同布索方式下結構的基頻和動內力的比較，得到了斜向索對結構的剛度影響比較大，若需提高結構剛度，應首先考慮布置斜向預應力索的結論。 |
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In chapter four , two distinct experiments , the control of free vibration and the control of steady vibration , are carried out to explore the feasibility and effectiveness of passive vibration control with piezoelectric shunt damping system 在壓電分流阻尼被動振動控制理論分析的基礎上，進行了懸臂梁在初始擾動下的瞬態振動響應控制和持續激勵下的穩態振動響應控制實驗，從而驗證了壓電分流技術應用于被動振動控制的可行性和有效性。 |
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With the analyses of the relationship figure between iri and velocity of representative road profile wavelength , the change trend between iri and vehicle velocity wasn ' t monotone increasing and was mainly affected by free vibration frequency of vehicle system 通過分析典型路面波長國際平整度指數與行駛車速的關系圖，發現國際平整度指數與速度之間不是單調增長關系，除路面因素外，兩者之間的變化趨勢主要受車輛系統自振頻率的影響。 |
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At first , free vibration characteristic of the structure is analyzed , and it is discovered that the frequencies are denseness , moreover vertical vibration is dominant , the combination of ribbed truss and pre - stressed cables enhanced the structure ' s stiffness in some degree 文中首先分析了該結構的自振特性，發現該結構頻譜密集，結構以豎向振動為主。 |
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The damage on a structure can bring the changes of physical parameter and the free vibration characteristics , and the damages in different location have a different effect on intrinsic modal 結構發生損傷會引起結構的物理參數發生變化(如剛度的降低、阻尼的增加等) ，從而導致結構的固有振動特性(如固有頻率、振型)發生變化。 |
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As regards the dynamic responses analyses , the free vibrations of a single deck supported by a single pillar or double pillars are studied 在動態分析中方面，針對最佳化分析后之單一層甲板結構以單支柱支撐或以雙支柱支撐的結構進行自然振動分析，另外也考慮了單支柱支撐之甲板結構的動態反應。 |
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As an example the main cable of the tsing ma suspension bridge is considered . the free vibration frequencies and the dynamic response under a harmonic point load are determined 作為算例，對香港青馬懸索大橋的主索進行了計算，求得了索的固有振動頻率以及索在簡諧荷載下的動力響應。 |
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( 2 ) through the modal analysis , compares and sums up the change of the free vibration characters of the model under different belted outrigger plans ( 2 )對結構有限元模型進行模態分析，比較和總結了不同加強層設置方案下，結構自振特性的變化。 |
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The rule of free vibration and vertical seismic action of pyrimid space grid ( psg ) roof structures are studied in this paper 本文主要研究平板型周邊支承正放四角錐網架的固有振動規律和豎向地震作用。 |
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Nonlinear free vibration analysis including coupled effect of elastic foundation for rectangular moderate thickness plate with discontinuities 彈性地基上間斷中厚矩形板的非線性振動 |
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The study result indicated that the free vibration of the dam will be affect by opened hollow and pier added on dam 研究表明考慮孔口和閘墩對大壩的自振特性有一定的影響。 |
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Equivalent sandwich plate and ansys modal analysis are used in the calculation of free vibration 給出了網架固有振動頻率的擬夾層板法算法和ansys模態分析算法。 |
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Free vibration analysis of a cantilever mortar beam with electrorheological fluid in a central crack 含電流變體砂漿復合懸臂梁結構的振動分析 |