鋼軌振動 的英文怎麼說
中文拼音 [gāngguǐzhèndòng]
鋼軌振動
英文
rail vibration- 鋼 : 鋼名詞(鐵和碳的合金) steel
- 軌 : Ⅰ名詞1. (路軌;軌道) rail; track 2. (比喻辦法、規矩、秩序等) rut; path; course Ⅱ動詞[書面語] (遵循; 依循) follow
- 振 : 動詞1. (搖動; 揮動) shake; flap; wield 2. (奮起) brace up; rise with force and spirit
- 鋼軌 : rail; metals; steel rail; railroad rail鋼軌間隙 dilatation joint; 鋼軌聯接板 joint bar; splice ba...
- 振動 : vibrate; vibration; vibrance; vibrancy; vibra; vibes; shaking; rumble; jitter; chatter; sway; jar...
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Fem analysis on cwr vibration characteristic through harmonic response way
無縫線路鋼軌振動特性諧響應有限元分析The transverse stiffness limitation index ? the permissible ultimate width / span ratio b / l of the continuous steel truss girder of railway bridge is analyzed in accordance with the analytic theories of random vibration of train ? bridge time - variation system and the required derailment coefficients and comfort of drivers and passengers in train running through the bridge. the limitation index in question may be referred to in the design of the continuous steel truss girders of railway bridges
基於列車-橋梁時變系統隨機振動分析理論,按照橋上列車脫軌安全系數和司機、旅客舒適度的要求,對鐵路連續鋼桁梁橋橫向剛度限值-橋梁容許極限寬跨比b / l進行了分析,對鐵路連續鋼桁梁橋的設計具有一定的參考作用。Using vogel ' s wear index as the rail side wear index, the paper analyzes the side wear variations of rail head when the parameters in the wheel / rail system vary, analyzes the influences of track irregularity on rail uneven wear on gauge corner emphatically. this paper analyzes the rail side wear dates measured by track division of shan hai guan since 1990, then gains the relationship between side wear and traffic volume and sums up the characteristics and regularities in the formation and development of side wear. in the end, some measures for regarding the side wear on curves are put forward
從輪軌摩擦、輪軌接觸幾何關系、輪軌接觸應力和輪軌蠕滑等方面對鋼軌側面磨耗機理進行了探討,從軌道幾何參數、機車車輛運營條件等方面對鋼軌側面磨耗的影響因素進行了重點分析和總結;應用輪軌系統動力學,建立了輪軌空間耦合振動時變模型,採用vogel側磨指數作為鋼軌側磨指標,系統分析了輪軌參數變化的情況下,軌頭側面磨耗的變化規律,重點分析了軌道不平順對鋼軌不均勻側磨的影響;對山海關工務段1990年以後現場測得的曲線鋼軌側磨數據進行了分析,通過擬合得到了鋼軌側磨量與運量的關系曲線,並總結了曲線上股鋼軌側面磨耗的特徵和發生、發展規律;最後提出了一些減緩曲線鋼軌側面磨耗的措施。Confirming 1072hz and 2193hz to be the most important control frequencies after the cohere analysis between vibration and noise signals. calculate the optimum parameters of two freedoms damping dynamic vibration absorber with the method of optimum parameter designing
計算鋼軌不同部位、不同方向的振動信號和噪聲信號的相干系數,得出振動信號和噪聲信號相干曲線圖,確定鋼軌減振降噪的主要控制頻率。Thirdly, in term of the results of testing and calculation, the displacement and libration, the difference of altitude, the flexibility and strain of crane - beams are all generally analysed, especially the reason why the crane - beams are attaint is lucubrated, and the reasons why the trigging pole is ruptured, the upper wingspan is damaged, the orbital movement, the exceptional incline of colums are open out, which has instructional significances that improve the design of the steel frame of the coke made by dry flameout
第三,根據檢測和計算結果,對鋼框架的位移和振動、框架高差、吊車梁撓度和應變等進行了全面的分析,特別對吊車梁系統的損傷原因進行了深入分析,揭示了制動桿件斷裂、上翼緣磨損、軌道竄動、柱異常傾斜等一系列損傷現象的原因,對于改進干熄焦鋼框架的設計有著直接的指導意義。In order to understand the key parameter, which influence the vibration isolation efficiency of floating slab track and provide theoretical support for simulation, we analyze the vibration isolation principle of floating slab track. coupling dynamics of vehicle - rail - floating slab - foundation system is calculated using the general software - ansys. the dynamic performances of the floating slab and the efficiencies of the vibration isolation are analyzed in detail
建立了車輛?鋼軌?浮置板?地基二維有限元模型,並採用有限元計算軟體ansys ,對整個耦合系統進行了不同工況下的動力學計算模擬,詳細分析了浮置板式軌道結構的動力學性能和浮置板式軌道結構的隔振效果。Noise radiated by the rail vibration is considered to be the main portion of wheel / rail noise in the frequencies blew 3000hz
研究表明, 3000hz以下的輪軌噪聲中由鋼軌振動產生的輻射噪聲占輪軌噪聲的70 %以上。Testing the vibration acceleration signal of rail top ( lateral and vertical ), rail middle ( lateral ), rail bed side ( vertical ) and rail bed middle ( vertical ) with dasp vibration testing system, calculation of signals obtains the power spectral density and frequency response curves of different position
測試橫向和垂向激振力下鋼軌不同部位的振動信號,進行頻譜分析,得出不同部位的頻率響應曲線。通過對頻響曲線的分析,得出不同方向激振力下鋼軌振動能量集中的頻率,確定不同方向激振力下鋼軌的主要振動部位和振動形式。According the principle of the statistical energy analysis method, define subsystem the whole system into four subsystem : subsystem of rail ' s vertical vibration, subsystem of wheel ' s vertical vibration, subsystem of wheel ' s lateral vibration and subsystem of acoustic space. then define the power flow equation between the subsystems
首先根據統計能量分析方法中子系統劃分的原則,將整個結構系統劃分為:鋼軌的垂向振動子系統、車輪的徑向振動子系統、車輪的軸向振動子系統及聲空間子系統共四個子系統;並且建立了子系統間功率流平衡方程。Studying in vibration characteristic of rail and improving a new method to decrease the vibration and noise become a key job of wheel / rail noise control
因此,研究鋼軌的振動特性,並提出一種施工簡單、成本低廉、效果明顯的鋼軌減振降噪措施成為降低輪軌噪聲的關鍵所在。Since rail is not longitudinal horizontal smooth, there exists various roughness factor, besides, the wheel has eccentric active force, so the vibration caused by subway train has random property. that means it can not be described with a simple defined function
由於鋼軌本身縱向並不是完全水平的,而是存在著各種不平順,加之車輪存在著偏心作用力,使得地鐵列車運行過程中所產生的振動具有隨機特性,不能用簡單的確定性的函數關系來描述振動的特性。Experimental method is used to study the relation between vibration of different position and noise and design a new simple and practical method but the method of treating whole rail as euler or timoshenko beam which is widely used by the most experts, but the result is improved to be effective
對加工出的鋼軌阻尼吸振器實物進行效果分析試驗,結果表明:鋼軌阻尼吸振器減振降噪效果顯著。本文研究鋼軌各部位振動特性及其與噪聲之間的關系,設計出兩方向的鋼軌阻尼吸振器,經實驗驗證效果顯著。At that time, owing to the limited construction funds and a lack of related regulations on environmental noise and vibration, dorts referred to the gc report of environmental assessment and thus adopted two remedial measures. one was to draw up contracts stipulating the specification of the environmental control systems and train types for noise reduction. the other was the utilization of continuous seamless welded rails to attenuate vibration
由於當時客觀上國內尚未有噪音及振動相關法規,本局又受限於捷運工程經費限制,于參考總顧問報告后,在噪音控制方面:針對環控系統及電聯車訂定相關合約規范;在減少振動方面:軌道系統採用無縫長焊鋼軌。The wave frequency has close relationship with the train ’ s speed. the train ’ s speed is more rapid, the frequency of wave is also higher, and the wavelength is shorter. if the distance between two wheels on the same rail is equal to
如果兩個車輪之間的距離等於半波長的奇數倍,那麼當這兩個車輪所產生的振動波傳播到鋼軌上同一點的時候,所引起的振動在該點的相位正好相反,振動疊加后的和位移將為零。Vibration propagates in rail with the form of wave, its spread speed is normally a constant value, that is to say, the product of wavelength and frequency of the vibration wave is a constant
振動以波的形式向遠處傳播,振動波在鋼軌中的傳播速度是恆定的,即波的頻率和波長的乘積是一個定值。分享友人