高應變率試驗 的英文怎麼說
中文拼音 [gāoyīngbiànlǜshìyàn]
高應變率試驗
英文
high-strain rate testing- 高 : Ⅰ形容詞1 (從下向上距離大; 離地面遠) tall; high 2 (在一般標準或平均程度之上; 等級在上的) above...
- 應 : 應動詞1 (回答) answer; respond to; echo 2 (滿足要求) comply with; grant 3 (順應; 適應) suit...
- 率 : 率名詞(比值) rate; ratio; proportion
- 試 : 名詞(古代占卜用的器具) astrolabe
- 驗 : 動詞1. (察看; 查考) examine; check; test 2. (產生預期的效果) prove effective; produce the expected result
- 試驗 : trial; experiment; test
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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。Here the hsc of sompa is achieved through adding super - effective water reducer, fined slag and silicon fume, and decreasing the water / cement ratio. by varying the area ( spacing ) of tension bars, compressive bars, vertical links and distribution steel and embedding steel fiber and polypropylene fiber we try to improve the behaviors of reinforced high performance concrete one - way spanning slabs in bending, so that its ductility be greater than 5. with the same arrangement of steel the width of bending member is varied to observe the effect of the width / depth ratio on the ultimate compressive strain of concrete
通過變化受拉筋含筋率和受壓筋、箍筋(鉤筋、分佈筋)含量,或摻加纖維使之成為鋼纖維高強混凝土( sfrhsc )和聚丙烯纖維高強混凝土( pfrhsc ) ,對高強混凝土雙筋截面梁、板的受彎性能進行了試驗研究,試圖改善高強混凝土受彎構件的延性,使其延性比大於5 ;並在相同配筋情況下,通過變化截面寬度,研究了高強混凝土受彎構件的寬高比對壓區混凝土極限應變的影響;並對試驗構件的裂縫發展情況進行了觀測。Based on the experiment results, the damage form of abnormal exterior joint are summarized, characteristics of hysteresis curve are studied, the effect of stirrup ratio and height of column section and beam section on anti - shear property of abnormal joint are discussed, working mechanism of abnormal exterior joint is researched, the conclusion that the anti - crack and bearing capacity of abnormal joint are studied by analyzing the minor core of abnormal exterior joint is proposed, the basic data is provided for the design formula of abnormal joints
根據試驗結果,總結了異型邊節點的破壞形態,研究了節點滯回曲線的特徵,討論了節點核芯配箍率、樑柱截面高度變化對異型邊節點抗剪性能的影響,分析了異型邊節點的受力機理,提出應以「小核芯」為分析單元來研究此類節點抗裂和承載力的建議,為異型節點設計公式的建立提供了基礎數據。Based on test results, numerical simulations on uniaxial tension at 480 and different strain rate have been conducted
在試驗研究基礎上,利用chaboche粘塑性模型模擬高溫下( 480 ) 、不同應變速率的單軸拉伸。The sort, material composite, structure properties and conduction mechanisms of eca ( electrical conductive adhesive ) were discussed in this paper. then three types of ega specimens were designed and made, on which temperature cycles test from - 55 ? to + 125 ? and thermal aging at + 125 ? were carried out. changes of the adhesive strength, eca ' s bulk resistance and contact resistance under the environment stress were summarized and a detailed evaluation on these specimens was given
本文在全面闡述導電膠的分類組成、物理結構、導電機理的基礎上,設計並製作了三批導電膠樣品,通過對樣品進行長時間的- 55 ? ? + 125溫度循環和125高溫存儲試驗,總結了導電膠粘接強度、體電阻和接觸電阻在環境應力下的變化規律,對三類樣品的長期可靠性做出了全面的評價,並結合導電膠電阻率和「穿流閾值」的計算機模擬,給出了提高導電膠可靠性和電導率的建議,介紹了國內外在高電導率高可靠性導電膠研製方面的一些最新進展。Creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design
基於現有的試驗資料,高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發,利用積分中值定理和疊加原理,推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式,對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別,並建議應從概念設計的角度出發,採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響Abstract : creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design
文摘:基於現有的試驗資料,高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發,利用積分中值定理和疊加原理,推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式,對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別,並建議應從概念設計的角度出發,採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響Through studying the working mechanism of the composing, the paper referred the bearing ' s analyzing model and designing flow. through shearing test of high damping rubber, the paper analyzes the influence of shearing shape, shearing strain range and inspiriting frequence on the characteristic parameters ( dynamic shear elastic module, dissipation engineering module, wasted gene ). according to the rule of equivalent energy, the paper gets the hysteretic curve of hdr ' s equivalent bilinear model and parameters ' calculating formula
本論文通過對這種分離式減震支座各組成部分工作機理的研究,提出了該分離式減震支座整體的計算分析方法和設計流程;通過高阻尼橡膠剪切試驗,分析了高阻尼橡膠剪切面形狀、剪應變幅值、激勵頻率和試件高度對特徵參數(動態剪切彈性模量、耗能模量、損耗因子)的影響。Based on the pseudo - static experimental results of nine abnormal joints, the damage process of abnormal joint is divided into four stages of original crack, entire crack, ultimate state and failure, the effect of axial force ratio, stirrup ratio and height of column section on seismic behavior of abnormal joint are discussed, the conclusion that anti - shear capacity of abnormal joint are studied in entire crack state by studying the minor core of abnormal joint is made, the calculating formula for anti - shear capacity of abnormal joint is proposed with a view to asymmetry in stirrup yield
摘要根據9個鋼筋混凝土框架異型節點試件的擬靜力試驗結果,指出異型節點受力過程分為初裂、通裂、極限和破壞4個階段;討論了軸壓比、節點核芯配箍率、柱截面高度變化對異型節點抗剪性能的影響;提出應考慮節點核芯區箍筋屈服的不均勻性並在通裂狀態下以「小核芯」為分析單元來研究此類節點抗剪承載力的建議;最終給出了異型節點抗剪承載力的計算公式。Twenty f1 combinations crossed among 5 varieties and strains different in fiber properties according to complete diallel crossing design were used to evaluate the heterosis and gene action of boll weight and lint percentage in high quality fiber property varieties in upland cotton in 1998 1999 for two year successively at nanjing. it was indicated that there existed small interactions with the environmental factors without maternal effects and the additive gene effect was in chief, attaining to 51. 2 % and 65. 4 % respectively for boll weight and lint percentage. the dominant effect was also in higher rate, 32. 6 % and 16. 8 % respectively. the population mean heterosis of boll weight and lint percentage over the mid - parental mean were relatively prominent 13. 3 % and 3. 5 % respectively in extreme significance. however, boll weight showed no significantly surpassing parental f1 heterosis over the better parent based on population mean ( 2. 0 % ) ; while the lint percentage expressed significant negative heterosis value ( - 2. 1 % ). the gene actions were in conformity with the heterosis expression. it was shown clearly that the f1 combinations crossed between parents with similar performances had relatively high dominant effects and significant positive f1 surpassing parental heterosis ( f1 heterosis over the better parent ) ; while no f1 combination crossed between the parents with prominent mutual difference surpassed the higher parent in yield components, which indicated that among those parents with less difference and close relationships, there still existed sufficient genetic variation or certain mechanism for creating variation and achieving greater advances in breeding. correlation analyses also indicated that there still existed severely undesirable negative correlation between yield and fiber properties as well as the difficulties for their simultaneous improvements
利用5個具有不同纖維品質性狀的品種(系)配製完全雙列雜交組合20個,通過親本和f1的2年隨機區組試驗發現產量性狀的鈴重和衣分與環境的互作效應小,不存在母體效應,並以加性遺傳效應為主,分別占表型方差的51 . 2 %和65 . 4 % ;顯性遺傳效應所佔的比率也較高,分別為32 . 6 %和16 . 8 % .鈴重和衣分的群體平均優勢較大,分別為13 . 3 %和3 . 5 % ,達到了極顯著;鈴重的超親優勢為2 . 0 % ,不顯著;衣分為顯著的負值( - 2 . 1 % ) .遺傳分析與雜種優勢結果一致.具體表現在產量性狀上,親本相當配製的組合雜合顯性較高,其超親優勢正向顯著,而極值親本(差異較大)所配組合沒有超過高親的.這表明親本差異小、親源關系較近的親本中仍然存在足夠的遺傳變異或某種機制以創造變異使育種取得更大的進展.相關分析表明了仍然存在嚴重的品質與產量的負相關,遺傳改良的難度較大This paper studies the variable - voltage energy saving theory and its implementation for asynchronous motor with light load, compares several kinds of scheme of improving efficiency in detail and confirms the variable - voltage energy saving method, that is adjusting the input voltage by detecting the iron loss and copper loss of motor directly. in addition, the directness *, simpleness and availability of the method are verified by the emulational experimental results with simulink of the matlab. the circuit of the general inverter based on the tms320f240 dsp was used in this paper, and the practicable program was compiled
本文分析了異步電動機輕載時降壓節能運行的原理,對幾種提高效率的方案進行了比較,確定了通過直接檢測電動機鐵損和銅損來實時調節輸入電壓以達到高效節能目的的控制方法,應用matlab軟體對系統進行模擬,在基於tms320f240dsp的通用型變頻器上編制了實用化的程序,形成了完整的樣機,對其進行了測試,並給出了試驗結果。Presents the system established by taking variable - speed torque converter with adjustable guide blades as a pilot control unit and forming an open or closed loop feedback control system, and its outstanding advantages, such as high capacity, simplicity, reliability and good transmission efficiency owned by hydrodynamic drive, and the dynamic model developed for variable - speed torque converter with adjustable guide blades by means of theoretical analysis and regression analysis of experimental data, and concluds that the model is sophisticated and simple enough to be used as a tool for design, analysis and computer simulation of a hydrodynamic control system
以導葉可調式液力變矩器作為控制單元組成的開環或閉環液力控制系統,具有液力傳動裝置能容大、系統簡單可靠、傳動效率較高等顯著的優點.通過理論分析和試驗數據的回歸分析方法建立了導葉可調式液力變矩器的數學模型,模型既簡單,又有足夠的工程應用精度,為液力控制系統的設計、動態分析和性能預測提供了必要的理論基礎Detailed contrastive simulation tests of four - phase and self - optimalizing abs control have been made and applying effects of self - optimalizing control are discussed, which establish stable principle foundation for self - optimalizing control applying to realistic abs controller. from the simulation results we can find that : automobiles which install self - optimalizing abs apparatus lock on the any road surface only when the vehicle body velocity and wheel velocity arrive at zero approximately, which is better for improving driving stability under braking. it shows anti - lock ability of self - optimalizing ; slip ratio approximates and surround the desired slip, which shows that this abs system uses fully road surface performance and retains large adhesion and braking performance is good ; braking force regulates with varies of road condition, which realizes road self - identification
通過模擬試驗可以看出:在各種路面上,汽車在安裝了自尋優防抱制動裝置后,在車速、輪速接近為0時才抱死,這對提高汽車制動時的操縱穩定性特別有利,顯示了自尋優避免車輪抱死的能力:滑移率的值基本上一直接近並且圍繞著與路面附著系數相對應的滑移率上下變化,說明了該系統充分利用了路面性能,基本上保持了較大的附著力制動,制動性能較好;制動力隨著路面條件的變化而相應做出調整,實現了路面自動識別的功能。From experimental result, i preliminarily know that eps is good thermal insulation material because the absorption of water is low and heat insulation is good, it is practicable at preserving temperature field of frozen earth roadbed and bringing frozen disaster under control ; second, according to the analysis of the eps that is applied into practical project, i have studied the practical effect which eps preserve roadbed temperature field, and the influence that was made after building field. i have get that eps can influence moisture content and frozen upper limit, through practical measuring data, i have studied freezing and expanding quantity and melting and submerging quantity during a complete frozen and melting cycle as well as have expanded and proved the practical application effect of eps with some reference significance to deep research of some connected problems. finally, through computer data analysis, setting up the analytical model of finite unit, i have simulated the temperature field of roadbed heat preservation, then expounded and proved that the height of embankment influenced the effect of thermal insulation material
其一是對聚苯乙烯泡沫塑料( eps )保溫板以及天然路基土層、路堤填料進行了室內試驗分析,結合國內外現在的有關科研成果,綜合確定其各項特徵參數;從試驗結果初步認識到聚苯乙烯泡沫塑料是一種吸水率低,隔熱性好的保溫材料,在凍土路基溫度場的保護和凍害治理方面是可行的;其二通過eps保溫板在現場工程實踐中的應用分析,研究了保溫板在保護路基土層溫度場的實際效果以及修築路堤后造成的影響,保溫板對土體含水量、凍結上限的影響,通過實測資料,研究了在一個完整的凍融周期內整個路基的凍脹量和融沉變形量,論證了保溫板的實際應用效果,對有關問題的進一步研究和相關工程設計具有參考意義;其三,通過計算機數值分析,建立有限元分析模型,對保溫路基的溫度場進行了模擬計算,論證了路堤高度對保溫材料效果的影響。The study on the characteristics of development and seed setting of different spikelet and floret positions was important for the realization of big - spike - cultural - goal with more spikelets and grains. with both the winter type ( wv ) and spring type ( sv ) varieties sown at different dates, it was found that the greater seed setting capacity of spikelets resulted in more grain number of spike. the trend of differences in grain weight per spikelet between the different sowing dates and varieties was similar to that of grain number. the correlation between the average grain weight of middle spikelets and lower spikelets and the grain weight per spike was highly significant. the environmental changes resulted from different sowing dates mainly effected the middle spikelets development, even though the differences between wv and sv were represented in every spikelet positions. the grain weight on the second floret position was most sensitive to the development status of wheat plant and environmental changes, and could represent the yielid potential of the whole spikelet. the results showed that the enhancement of seed setting of the middle spikelets ( from 5th to 15th ) and the grain development from the first to third floret positions was a key to realize big - spike and grain
確定小麥不同小穗位和小花位發育與結實特性是實現大穗多粒的重要前提.本文通過對冬、春性小麥品種分期播種試驗得出,較高的小穗結實力是增加穗粒數的重要因素.不同播期、品種之間,小穗粒重和粒數呈現相同的變化趨勢.中部以及基部小穗粒重與穗粒重之間呈高度正相關.體現環境差異的播期效應以對中部小穗發育的影響為主,而冬、春性品種的基因型差異可反映在各個小穗位上.第2小花位的子粒發育狀況反映整個小穗的生產能力.結果表明,促進中部優勢小穗(第5 15小穗)結實和第1 3小花位子粒發育是提高小花結實率和穗粒重的關鍵As an example, the paper presents the design of static adjustable reactive compensation with step - down transformer for ying shuiqiao traction substation ( tsc ), the design of the over compensatuion of dynaminc state imbibe system during no travelling crane ( tsr ), it did synthesis optimize of the mostly equipments " technology parameter, at the same time did the analysis and evaluation in the base of colligate control strategy using computer emulate
在對包蘭線的迎水橋變電所進行了模擬試驗的基礎上,制定了綜合控制策略,把裝置實際應用於該變電所,裝置的實際運行情況表明:補償效果好,功率因數提高到0 . 94 。The compress tests on multiaxial multi - layer warp knit glass - fiber composite ( mmwk ) have also been carried out at high strain rates. the out - of - plane compressive property of multiaxial multi - layer warp knit glass - fiber composite are also rate sensitive. the maximum stress strain and elastic modulus of mmwk composite increase with the rising of strain rate
首次對多軸向經編玻璃纖維復合材料進行了高應變率下的面外壓縮試驗,實驗結果表明,多軸向經編結構玻璃纖維復合材料在面外力學性能上是應變率相關的,隨著應變率的增加,沖擊壓縮瞬時應力增加,最大應力和最大應變增加,同時初始模量也有增大的趨勢。Standard test method for elevated temperature tensile creep strain, creep strain rate, and creep time - to - failure for advanced monolithic ceramics
高級單片陶瓷的高溫抗拉蠕變應變,蠕變應變率及蠕變斷裂時間的標準試驗方法The compress tests on 3d woven glass - fiber composite have been carried out at high strain rates
首次對三維機織玻璃纖維復合材料進行了在高應變率下的面外壓縮試驗。From an examination of the tensile behavior of cz ly12 alloys under different temperature and strain rate, two kinds of deformation and intergranular fracture behaviors were observed that were opposite to the characteristic strain rate range in fine - grained superplasticity. the mechanisms are described as follows. the high ductility achieved at high strain rate is generally attributed to the dominant role of gbs accommodating mechanisms, which is considered as dislocation creep within grains controlled by subgrains
研究選用自然時效淬火態的ly12鋁合金,進行了一系列不同溫度和應變速率下的單軸拉伸試驗, 480下,觀察到與傳統細晶超塑性特徵區間相反的行為:較高應變速率下,動態再結晶使晶粒細化,促進了晶界滑移,亞晶界控制的晶內位錯蠕變是晶界滑移的主要協調機制。分享友人