顫振試驗 的英文怎麼說
中文拼音 [zhànzhènshìyàn]
顫振試驗
英文
flutter clearance-
A fourth model may be tested for flutter speed.
第四個模型可用來進行顫振試驗。Flutter boundary prediction ( fbp ) based upon sub - critical turbulence response analysis is an important research work in flutter test field of aircraft
基於飛機結構亞臨界響應分析的顫振邊界預測（ fbp ）技術是顫振試驗研究的重要課題。In this thesis, the theories of joint time frequency analysis and image processing are combined, and a new fbp method called stf is proposed. the characteristics of digital and application are investigated for stf
本文根據顫振試驗的原理和觀測信號特點，綜合運用聯合時頻分析和圖像邊緣識別理論，提出了一種顫振邊界預測的新概念? ?時頻共振（ stf ） ，並完成了stf方法和演算法的研究。2. a systematic test has been carried out to observe how the model actuating frequencies and amplitudes affect the flutter derivatives, and the effect is found to be quite minor
通過系列試驗考查了模型驅動頻率和振幅對顫振導數的影響，驗證了驅動頻率和振幅對顫振導數影響很小。On the bases of carrying out idle operation, cutting and modal experiment of certain numerical controlled lathe, it is determined that weak dynamic stiffness in the spindle component of machine tool is the reason in the respect of structure for causing cutting vibration of machine tools
摘要在對某型數控車床進行空運轉、切削及模態試驗的基礎上，確定了機床主軸部件動剛度薄弱是引起機床切削的結構顫振方面的原因。Abstract : this paper introduces bridge section model tests in the wind tunnel. it presents static forces on bridge section models. the effects of bridge fences, isolation belts and different model lengths on static forces are studied. the static and dynamic stabilities of bridge are analyzed. the results show the effect of bridge fence, isolation belts and different model lengths on static forces should be considered in wind load design
文摘:通過橋梁節段模型風洞試驗測量了橋梁的風力，研究了橋面護欄和隔離帶以及變模型長度對模型風力的影響，並分析了橋的馳振穩定性和顫振穩定性.試驗結果表明：設計試驗方案以及應用試驗結果時應考慮模型長度、橋面護欄及隔離帶的影響As the first successful experiment which has been conducted in china to test the unsteady aerodynamic forces in wind tunnel, the feasibility of the method is proved through numerous tests and abundant practice
首次在國內成功實現了在風洞中測試橋梁節段模型顫振導數的強迫振動法，並通過大量的試驗驗證了本測試裝置的可靠性。The feasibility of the technique is examined by using compute simulation and flutter testing of aeroelastic models in low - speed wind tunnel
經數字模擬及氣彈模型低速風洞顫振試驗數據驗證，取得了滿意的效果。Especially, the technique proposed here can be expanded to the flutter test with variable speed. the related software is developed on labview for windows
並通過數值模擬和某型飛機氣彈模型低速風洞顫振試驗驗證了方案的有效性、可靠性和工程實用性。In this paper, according to the characters and processing requirements of flutter test data, based on the general theory of wavelet analysis, a set of laplace wavelets are introduced
本文根據顫振試驗信號的基本特徵和處理要求，在對小波一般理論研究的基礎上，引入了一種適用於顫振試驗信號處理（ ftdp ）的小波? ? laplace小波。At last the properties of the laplace wavelet algorithm was demonstrated by digital simulation signal and wind tunnel flutter test signal. it comes the result that correlation filtering using laplace is a very promising and feasible approach
本文演算法是採用matlab語言實現的，通過數字模擬和實際的風洞顫振試驗信號，對方法的數值特性和應用情況進行了考核和驗證。The theory analysis and method principle are presented the characteristics of the two methods are studied by computer numerical simulation. the results show that both the methods are reasonable and feasible. focused on the features and requirements of flutter test data processing, the methods presented here are used to pickup the major information as a pre - processing technique the application scheme is brought out for flutter boundary prediction based on subcritica
根據顫振試驗的原理和觀測信號特點，本文將所提出的兩種時頻域濾波演算法引入到了飛機結構亞臨界響應分析的顫振邊界預測（ fbp ）研究當中，給出了一種新的顫振邊界預測方案，即通過聯合時頻分析與時頻域濾波提取有效信號再進行模態參數提取與顫振邊界預測。Focused on the nonstationary features and analysis requirements of flutter test data, the application scheme is brought forward for flutter signal processing. by using computer simulation and flutter test of low - speed wind - tunnel of some aeroelastical modes, the characteristics of the scheme are investigated
本文基於顫振試驗信號的非平穩特點與分析需求，應用自適應時頻分析技術給出並實現了兩種新的顫振信號處理方案，重點研究了適用於連續變速顫振試驗的顫振邊界預測問題。分享友人