碰撞凝結 的英文怎麼說

中文拼音 [pèngzhuàngníngjiē]
碰撞凝結 英文
perikinetic aggregation
  • 碰 : 動詞1 （一物體突然接觸另一物體; 撞擊） touch; bump 2 （碰見; 遇到） meet; run into 3 （試探 ） tr...
  • 撞 : 動詞1 （猛然碰上） collide; strike; knock; bump against; run into 2 （碰見） bump into; run into;...
  • 凝 : 動詞1. （凝結） congeal; curdle; coagulate 2. （注意力集中） fix
  • 結 : 結動詞（長出果實或種子） bear （fruit）; form （seed）
  • 碰撞 : 1 （猛然碰上） collide; run into; knock against; run foul of; crash 2 [物理學] collision; impact;...
  1. By making some assumptions, collision frequency were presented. then the the flocculation kinetics model was established through population balance equation. comparison of experimental data and modeling results indicate that there are the same trend between the two. so the model can predict floes number and size during flocculation of yellow river ' s loess particles without using empirical parameters. the tem and sem were used to obsever floes in the study of floe structure. the flocculation was divided as flocculi, floc and floe aggregate. the floes structure model was established by assumption that particles position in floe accords with tetrahedron. the fractal dimension of model and experimental floes was found to be coincidentso the model can reflect the structure of flocs formed in flocculation of yellow river ' s loess particles by macromolecule flocculant at a certain extent

    最後，本文還對絮凝動力學和絮體結構進行了研究，在前人研究的基礎上，針對高分子絮凝黃河泥沙，對絮凝過程作了一些符合試驗條件的假設，建立了顆粒碰撞頻率表達式，應用了顆粒數量平衡方程，從而建立了絮凝過程的動力學生長模型，模型計算結果與試驗數據對比表明，二者趨勢一致，在沒有使用經驗參數的情況下基本上能夠描述黃河泥沙絮凝過程中絮體數量和尺寸分佈的變化過程；對絮體結構的研究中，應用掃描電子顯微鏡和透射電子顯微鏡對絮體進行了觀察，將絮體分為絮粒、絮團和絮網三個不同的生長階段，通過假設顆粒結合位置符西安建築科技大學博士學位論文合正四面體，建立了絮體結構模型，計算得到的模型絮體分形維數基本與試驗中的實際絮體相符，在一定程度上能夠反映高分子絮凝黃河泥沙生成的絮體結構。
  2. A predigested car model and a reasonable bridge model were presented after the bridge structures and the colliding characters were analyzed. the stress and the displacement of the concrete, bar, pre - stress bar changing with time were presented. the stress of the whole bridge at the time of the contact and the deformation of the whole bridge at the end of the contact are obtained

    採用美國ansys公司的有限元軟體ansys ls - dyna對碰撞過程進行數值模擬分析，得到了撞擊點附近混凝土、普通鋼筋以及預應力鋼筋的應力及位移隨時間的變化規律，同時得到了全橋在碰撞后瞬間的應力分佈規律和碰撞結束前全橋的變形規律。
  3. Based on the summary of car - barrier impact study at home and abroad and on computer simulations, a multi body dynamics program madymo was used to develop simulation model of car - concrete barrier impact

    在總結汽車-護欄碰撞國內外研究情況的基礎上，本文基於計算機模擬技術，採用多剛體動力學模擬軟體madymo建立了汽車-混凝土護欄碰撞的模擬模型。
  4. Improvement of barrier protection performance was analyzed from views of material, structure and type, installation of concrete barrier. it was presented to increase the protection capacity of the barrier through material improvement so as to decrease rigidity of the barrier. the effect that the height of the point of intersection between the up and below inclined plane may have on car overturn after impact

    從混凝土護欄的材料、結構形式、施工方法等方面進行了護欄防護性改進分析，提出通過改進材料來提高護欄的防護性，降低護欄的剛度，討論了護欄截面上、下斜面交叉點的高度對車輛碰撞后傾翻可能性的影響。
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