橫橋周期 的英文怎麼說
中文拼音 [héngqiáozhōuqī]
橫橋周期
英文
cross bridge cycling-
Based on the urgent need that pier protective device primarily designed needed to be tested its crashworthiness by the impact of ship in multi - situation, etc in multi - angle and multi - water, the writer analyzed the critical elements that affect the simulation of the collision between ship and pier protective device, and found the feasible way to deal with the conflict between calculation efficiency and precision. using this method and employing ansys / ls - dyna program, which is the universal nonlinear dynamic analysis software, a head - on collision between ship and pier protective device designed for guanzhou river bridge is simulated and presented, the simulation of time history course of full - scale mini - collision between ship and pier protective device was taken into reality with a spot of elements ( less than 21000 ) and scanty time ( 9 hours on p4 pc )
本文在前人研究的基礎之上，結合船橋碰撞實例，對碰撞計算機模擬模擬的關鍵技術進行了研究，在效率與精度的矛盾中找到平衡，對一艘2000噸級散貨船橫橋向正撞廣東管洲河大橋橋墩防撞鋼套箱這一種工況進行了計算機模擬模擬，實現了以較小的單元和較短的時間模擬碰撞的時間歷程，模擬滿足工程精度要求，解決了目前碰撞模擬計算周期太長的問題，同時模擬模擬得到的結論對該類防撞裝置提供了有價值的參考。According to different mechanisms, there exist several types of resonance, including the bridge resonance induced by the periodical actions of moving load series of the weights, centrifugal forces and lateral winds of vehicles, the bridge resonance induced by the loading rates of moving load series of vehicles, the bridge resonance induced by the periodical loading of train vehicles excited by rail irregularities, wheel flats and hunting movements, and the vehicle resonance induced by periodical actions of the regular arrangement of bridge spans and their deflections
根據發生機理的不同，車橋系統可能發生幾種不同形式的共振，包括由車輛重量、離心力、橫向平均風荷載等形成移動荷載列的周期性動力作用引起的橋梁共振，由移動荷載列加載速率引起的橋梁共振，由軌道不平順、車輪扁疤、輪對蛇行等周期性加載引起的橋梁共振；由橋跨的規則性排列及其撓度的影響，對移動車輛形成周期性動力作用使車輛出現的共振。
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