modal speed 中文意思是什麼
modal speed
解釋
最常見的速率-
Presents the model proposed for analyzing the vibration characteristics of shrouded blades and their calculation method by employing a wave propagation theory and modal synthesis technology coupled with a finite element method from the view point it is possible not only to conduct frequency modulation of the shrouded blades of a gas turbine, but also to utilize the friction effects between them to dissipate energy, thereby attaining the aim of vibration alleviation, as shrouded blades have been widely used in the design of high - speed turbomachinery, such as modern gas turbines and steam turbines, and with the shrouded blades forming an integral whole in a centrifugal force field, the vibration characteristics of the whole ring of blades are different from those of a single isolated blade, and this makes it essential to take into account the integral effect of blade shrouds, concludes from the calculation examples and engineering application that the above approach is valid and correct along with the possibility of considerably reducing the scale of calculation and analysis, and points out it is necessary to take into consideration the coupled effect of the whole ring of blades while the dynamic characteristics of shrouded blades is being analysed
帶冠葉片不但能調頻，還可以利用葉冠之間的摩擦效應來耗散能量，達到減振的目的.帶冠葉片在離心力場中形成一整體，其整圈葉片振動特性不同於單個孤立葉片，需考慮葉冠的整體效應.利用帶冠葉片系統的循環對稱性，提出了採用波傳播理論和模態綜合技術，結合有限元方法研究燃氣輪機帶冠葉片振動特性的分析模型和計算方法.算例和工程應用證明了該方法是效性的、正確的，並可以大大降低計算分析規模.研究表明帶冠葉片動力特性分析時必須考慮整圈葉片的耦合效應 -
By combining international air freight, customs brokerage and the multi - modal delivery services of ups, trade direct air can help streamline your supply chain and accelerate your speed to market
通過將國際空運海關報關和ups的多種形式的派送服務結合在一起，空運直航貿易能夠幫助您簡化供應鏈，並加快您進入市場的速度。 -
Dynamic modeling and modal truncation approach for a high - speed rotating thin elastic rectangular plate
高速旋轉柔性矩形薄板的動力學建模和近似演算法 -
The vibration problems in pumped storage hydroplant are outstanding, due to their high - velocity flow, high - speed units, etc. on the base of summarizing the development of inverse analysis methods, this paper proposed a dynamic inverse model for underground hydroplant was built, combining the modal analysis and inverse numerical computation
點，提出採用實驗模態分析與動力反演分析相結合，以試驗模態與計算模態某種偏差為目標函數，建立通用的結構最優化動力反分析模型。引入改進的遺傳演算法，實現了其與ansys軟體的介面。 -
A perturbative shallow water tomography scheme based on the modal wave number inversion technique is considered in this paper. and it could estimate the bottom sound speed and density
論文提出了一種基於簡正波波數的擾動反演淺海聲層析方法，該方法能夠反演海底聲速和密度。 -
Knowing the bottom parameters, the influence of the mismatch of the bottom parameters for the inverted water sound speed and the relationship of the statistical distribution between bottom parameters errors and inverted water sound speed errors are studied using modal wave number tomography scheme
應用簡正波波數層析方法，在海底參數已知的條件下，研究了海底參數失配對反演的水體聲速的影響，以及海底參數誤差分佈與反演的水體聲速誤差分佈的關系。 -
A scheme is proposed to derive natural frequencies and modal functions of a beam under the given boundary conditions and moving axially at a constant speed
提出在給定邊界條件下確定一勻速運動梁固有頻率和模態函數的方法。 -
We can promote the development of an inter - modal system and consider other supporting facilities to speed up the flow of goods and information. the provision of integrated services will also strengthen hong kong s competitive advantage as a supply - chain base
我們推動發展多式聯運系統，並且研究強化支援機制，加快貨物和資訊的流通，綜合提供多個環節的服務，增加香港作為供應鏈基地的優勢。
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