絕熱應變 的英文怎麼說
中文拼音 [juérèyīngbiàn]
絕熱應變
英文
adiabatic strain-
The temperature rise at the center of a massive concrete wall is calculated by using the adiabatic rise of temperature and heat conduction equations of concrete based on the equivalent time, and considering effects of temperature on the hydration heat reaction ratio and creep characteristics of early - age concrete
摘要基於等效時間的混凝土絕熱溫升、熱傳導方程，考慮溫度對早期混凝土水化熱化學反應速率和徐變特性的影響，計算了大體積混凝土墻中心的溫升。In the program, the effect of lamination placement, construction interval, elastic modulus change, thermal insulation change, surrounding temperature change, concrete creep and autogenous volume change on thermal stress are considered. and such temperature control measurement as water pipe cooling, heat preservation of the dam surface, the pouring temperature control, the overflow across the dam top during flood season can also be simulated by numerical method
該程序在編制過程中考慮了混凝土分層澆築、施工間歇、彈模變化、絕熱溫升過程、環境溫度的變化、混凝土徐變、自生體積變形等因素對壩體溫度場及溫度應力場的影響，同時也考慮了水管冷卻、壩體表面保溫、控制澆築溫度、施工汛期壩頂面過水等各種溫控措施的數值模擬。In this article, according to heat conduction theory, elastic creep theory and finite element theory, the temperature field and creep stress field in the arch dam during construction and operation are simulated and analyzed by means of three dimensional finite element relocating mesh method, and the distribution law of the temperature field and creep stress field in the arch dam during construction and operation are systematically studied, and according to the construction process of concrete arch dam, the effect of lamination placement, construction interval, elastic modulus change, thermal insulation change, surrounding temperature change, concrete creep and autogenous volume change on thermal stress in the arch dam are also considered
論文根據熱傳導理論、彈性徐變理論及有限元理論，用三維有限元浮動網格法對拱壩施工期和運行期溫度場、徐變應力場進行了全過程模擬分析，較為系統的研究了混凝土拱壩施工期和運行期溫度場、徐變應力場的分佈規律，在分析中按照混凝土拱壩施工過程，考慮了混凝土分層澆築、施工間隙時間、彈模變化、絕熱溫升過程、環境溫度的變化、混凝土徐變、自生體積變形等因素對壩體溫度應力的影響。In computation the effect of thermal insulation, elastic modulus, creep degree and autogenous volume change along with age, the progress of pouring by layer, work suspension in summer, the change of air temperature, heat preservation, water cooling, and water storage, by stages on temperature field are considered
計算中考慮了混凝土的絕熱溫升、彈性模量、徐變度和自生體積變形隨齡期的變化以及分層澆築、夏季停工、外界氣溫變化、表面保溫、通水冷卻及分期蓄水等因素對壩體溫度應力場的影響。The effect of the strain gradient on the onset of adiabatic shear instability in gradient - dependent particle reinforced metal matrix composites is investigated by using of linear perturbation analysis in this paper. the analytical results demonstrate that high strain gradient produced by the reinforcing particle will provide a strong a deriving force for the onset of adiabatic shear instability in mmcp
結果表明：增強顆粒的加入，改變了基體材料的微結構，並在基體中誘導了高的應變梯度，而這種高的應變梯度為mmcp的失穩提供了強大的驅動力，使其更易發生絕熱剪切變形局部化失穩。With the very low water to cement ratio, rpc has ultra - high strength high ductility and low permeability. in this paper, the compressive strength of rpc can reach to a high point with the number approximately 135mpa. as illustrated from the study results, we can approve some fundamental conclusions : there are big effects on rpc with deferent kinds and properties of raw materials and deferent curing conditions ; stress - strain curve shows the process of destroy with rpc samples ; x - ray diffraction analysis indicates that heat treatment at temperatures 90 accelerate the hydration of rpc sharply, therefore, mechanical and microstructural properties of rpc are highly dependent on heat treatment ; it is believed that rpc materials have excellent resistance to chloride permeability ; during the heat treatment, the shrinkage of rpc developed quickly because of chemical reactions ; the rpc with slag mostly has the advantage of rpc without slag about resistance to solutions corrosion
研究結果表明：通過對rpc各組分摻量變化的研究，可以找到rpc的最優配合比；試件成型后的熱養護制度對rpc的性能影響巨大； rpc的抗壓應力?應變曲線可以反映出試件受破壞時微裂紋的擴展情況，剛纖維的摻入可以大幅改善rpc的韌性； rpc在成型后存在較大的收縮，而其中的化學收縮要遠遠大於乾燥收縮； rpc具有很強的抗氯離子滲透性能，漿體的密實度很高；通過x射線衍射實驗，可以發現rpc的膠凝體中ch晶體已經幾乎不存在，膠凝體主要由c - s - h凝膠和未水化水泥顆粒組成；在抗溶液侵蝕的實驗中，摻礦渣rpc的抗溶液侵蝕性能在絕大多數情況下要好於不摻礦渣試件，酸、堿溶液和浙江工業大學碩士學位論文摘要一些鹽溶液都會對rpc的結構產生侵蝕作用，但是機理各有不同。The iter project, admirable though it is, should be merely a component of a concerted effort
國際熱核聚變能源研究計劃，盡管絕妙，本來應當只不過是整個能源研究開發協調努力的一部分。Fouriertransformation infro - red microspectroscopy micro - ftir technique was used to investigate the chemical compositions and structures of cutinite, vitrinite and fusinite from jurassic coals in tarim basin at different temperatures. the results show that the chemical structure of cutinite is mainly composed of long aliphatic - side chain with minor amounts of aromatic compounds. vitrinite is mostly composed of aromatic compounds, in addition to large amount of short aliphatic - side chain compounds. whereas fusinite are dominant by aromatic structure. the study indicates that cutinite is one of the best oil source - rocks, with the higher hydrocarbon - generation potential ; vitrinite is one of better gas source - rocks, and has medium hydrocarbon - generating potential ; fusinite has little hydrocarbon - generating potential. in addition, the components of aliphatic structures of cutinite, vitrinite and fusinite decrease, the aromatics are enriched and condensation of aromatic structure increases with increasing the temperature, and along with the rise of temperatures, the intensity of aliphatic structure and heteroatomic compounds decrease obviously, however the aromatic structure changes a little
應用顯微紅外光譜技術，對塔里木盆地侏羅紀煤中有代表性的3種組分角質體鏡質體絲質體在不同熱模擬溫度下的結構組成變化特徵進行了研究，結果表明：角質體結構組成中含有較豐富的長鏈脂族結構，而芳香結構和含氧官能團的含量則相對較少與此相反，絲質體結構組成中芳香烴占絕對優勢，而脂族結構含量則很少鏡質體結構組成介於角質體和絲質體之間，含有較多的短鏈脂族結構和芳香結構。The demonstration of heat - transfer measuring techniques and prospect of infrared thermal mapping techniques, main parts and performance indexes of a infrared camera, functional blocks and implementation of infrared processing software, experimental facility and measuring system of the wind tunnel has been made. the model emittance was experimentally determined and the three methods correcting directional emittance were compared. those problems of the infinite - slab model thickness and constant wall heat rates hypothesis, the determination of adiabatic wall temperature were discussed in a 1 - d heat conduction analysis
本文對紅外熱圖測熱技術與應用前景、紅外熱像儀主要部件與性能指標、紅外測熱數據處理軟體功能模塊與實現、風洞試驗設備與測量系統等進行了論述，測量了模型表面發射率並對發射率隨極角變化的三種修正方法進行了對比，對一維熱傳導分析中模型壁厚半無限假設、壁面熱流定常假設、絕熱壁溫選取等進行了探討。Organic - inorganic nanocomposite, which are the complex of inorganic nanopraticles with organic compound, is a popular study subject in nanoscale composite. the nanocomposite can not only take advantage of several advantage, but also produce new properties. in this thesis, taking account of the problems in electrorheological fluids such as high leakage current, low yield stress and stability, the pan - batio3 nanocomposite with different structure are prepared by in - situ complex technology and modified sol - gel method
根據目前電流變液中出現的問題（如屈服應力不夠高，漏電流密度不夠低，穩定性不夠好等問題） ，基於聚苯胺有較高的熱穩定性，且密度又小，特別是聚苯胺的介電常數和電導率均可按需調整，此外，鈦酸鋇無機納米粒子作為一種無機鐵電體，在電場作用下具有自發極化的能力，一方面可以為體系提供高的介電常數，另一方面又可保證體系的絕緣性能。Under different load, when we apply this software to any time, region and cooling way, we can get the hottest spot increment and aging rating. to manufactory, the software means sounder thermal design, which will meet the load, putted forward by user, while to user, the software equal to a master who can help them decide the capacity rating of the transformer, which will fit the load. by using the software, the potential danger and the waste, caused by unfit load choice may be avoided
研究開發了計算乾式電力變壓器負載能力的計算軟體，可對于各種絕緣結構，各種冷卻方式和任一地區、任一時間下運行的變壓器在不同運行載荷下的最熱點溫升絕緣老化率進行分析和計算，同時利用該軟體製造廠可以依據用戶提出的運行負載量給出相應的熱設計方案，用戶可根據運行負載情況利用軟體計算所需變壓器的額定容量，避免額定容量選擇不當造成隱患和浪費。Inverted pendulum system is a typically rapid, multi - variable, nonlinear, absolutely instability system, and it is the favorite problem in the control theory and application. because it is a typical experiment device to test the modern control theory, and also it " s control technique and idea is useful to average industrial process
倒立擺系統作為典型的快速、多變量、非線性、絕對不穩定系統，一直是控制理論與應用的熱點問題，因為它不但是驗證現代控制理論方法的典型實驗裝置，而且其控制方法和思路對處理一般工業過程亦有廣泛的用途。Abstract : a previously proposed approximate quasi - static theoretical method is employed herein to examine the deformation and perforation of a simply - supported circular plate struck by a flat - faced projectile at normal incidence. based on the principle of virtual work, static load - displacement relationships are first obtained and then used to predict the energy - absorbing capacity of the plate subjected to relatively low speed impact. it is shown that good agreement is obtained between the theoretical predictions and the available experimental data, provided that adiabatic shear plugging failure does not occur, but the influence of strain rate sensitivity is taken into account
文摘:採用準靜態近似理論方法分析簡支圓板在平頭彈丸正撞下的變形和穿透.首先基於虛功原理得到了靜態荷載位移關系，並將其用於預測低速沖擊下圓板的能量吸收能力.當考慮了材料的應變率敏感性，並且不發生絕熱剪切沖塞破壞的前提下，理論預測和實驗結果吻合良好The effects of reinforcing particle size on deformation strengthening and localization behavior of sicp / 2024al composites are investigated by making use of split hopkinson compression bar and hopkinson torison bar. the experimental results demonstrate that the strengthening effect for the small - size particle - reinforced composite is higher than that for the large - size particle - reinforced composite
實驗表明：這類復合材料無論是在沖擊壓縮還是沖擊扭轉載荷下其變形強化和局部化行為都具有明顯的顆粒尺寸效應，即增強顆粒尺寸越小，變形強化效果越好，越易發生絕熱剪切變形局部化失穩。分享友人