混響振幅 的英文怎麼說
中文拼音 [húnxiǎngzhènfú]
混響振幅
英文
reverberation amplitude-
No bad effect on concrete strength is found within a certain range of amplitude. the ultimate loads of vibration members are not lower than those of normal ones am, when vibration frequency is below 40hz and maximum vertical displacement is within 0. 2mm
在一定的振幅范圍內,對混凝土強度沒有不利影響,當激振頻率在40hz以下,最大豎向位移振幅在0 . 2mm以內,受振與非振構件相比較,其破壞荷載值沒有降低。The output signal of pda is affected by the suspended particle concentration, particle size, and the type and dosage of coagulant as well. by analysing the fi curve, it is found that the characteristic parameters of fi curve closely relate to aggregates size and turbidity removal the aggregates size and turbidity removal achieve the maximum when the amplitude of fluctuation is the maximum. the mean diameter and fractal dimension increase with agitation time, and finally reach a steady - state
通過對混凝過程的在線監測和對pda輸出信號fi曲線的數學解析表明: fi曲線綜合反映了懸濁液中膠體顆粒濃度和顆粒粒徑,混凝劑種類和投量很大程度上影響了fi曲線形狀, fi曲線的特徵值與絮凝體平均粒徑和濁度去除率之間具有良好的相關關系,在振幅最大處,濁度去除率達到最高,絮體平均粒徑最大,該條件下對應的投藥量為最佳投藥量。The other is the resonance of boom system of the truck - mounted concrete pump and the frequency response of displacement and acceleration of testing point. the main results and argumentations of this thesis are listed below in detail. 1. based on the certain boom system model of the truck - mounted concrete pump made in china, three - dimensional model of boom system of the truck - mounted concrete pump is built by using the softwar of pro / engineer
2 .基於剛柔混合柔臂架模型,利用adams的振動模塊,以混凝土流動時的沖擊力為激勵對臂架系統進行了諧響應振動研究,得到臂架振動響應的幅頻曲線,並對結果曲線進行了分析,在此基礎之上,研究了油缸阻尼對臂架末端振動位移和振動加速度的影響。In order to research mechanical capability of the reinforced concrete beam with bonding steel plate, adopting separate method to establish finite element model of the reinforced concrete beam with bonding steel plate, using fem to study dynamical characteristics of the model, have got good results which can not be easily got using traditional resolution method, which can give reference to study dynamical characteristics of the reinforced concrete beam with bonding steel plate
摘要為了研究粘鋼加固后鋼筋混凝土梁的各種力學性能,採用分離式方法建立了粘鋼加固后鋼筋混凝土梁的有限元模型,並用有限元方法對此模型先後進行了模態分析和簡諧集中載荷作用下的動力響應分析,得出了加固后鋼筋混凝土梁的前5階振動模態和簡諧集中動荷載作用下粘鋼加固鋼筋混凝土梁底部開裂的極限動載荷幅值頻率曲線,可為研究粘鋼加固鋼筋混凝土梁的各種動力特性提供參考。分享友人