比蠕變 的英文怎麼說
中文拼音 [bǐrúbiàn]
比蠕變
英文
specific creep-
Thermoplastics pipes. determination of creep ratio
熱塑管道.蠕變比測定2. the creep and the concretion of the soil under either the natural conditions or the external loads are considered to approach the actual impact. moreover, several settlement models and their computing methods are studied, including the simple theory method and the semi - theory & semi - experience method
2 .在自然狀態和外界荷載作用下,適當考慮土體的蠕變、固結等實際問題,從而更接近實際效果;分析比較了幾種沉降模型及其計算方法,主要為簡易理論法、半理論半經驗法等。Tial alloys are widely used because they possess light quality and excellent elevated temperature properties such as high strength retention, resistance to creep and oxidation
Tial合金因其輕質、高溫下高比強度、比剛度以及抗蠕變和抗氧化性能突出等優點,在航空航天等高溫材料領域有極廣泛的應用。The latest experimental results of rock creep were used : the third invariant of deviator stress tensor had greater effect on creep properties ; the stress threshold of lateral creep of rock was 20 % ~ 40 % less than that of axial creep of the same rock
文中應用了課題組近期巖石流變實驗研究的結果:應力偏量第三不變量對巖石蠕變影響顯著;巖石側向蠕變的應力閥值比軸向蠕變應力閥值低20 % ~ 40 % 。Available empirical results indicate that the creep of reinforcement strongly influences the overall behavior of rs structures, which is demonstrated by excessive deformations. different creep tests are discussed and the test methods to obtain the two kinds of creep curves are compared in this thesis. the methods of how to determine the reduction factor according to long - term strength of creep or allowable strain during the services life are presented
文中介紹和研究了不同的蠕變試驗手段,比較了獲得兩種蠕變曲線的試驗方法,並給出了兩種蠕變曲線一定范圍外推的數據處理方法;給出怎樣根據設計使用年限的長期蠕變強度或容許應變來確定蠕變折減系數的方法,並用計算實例來說明。Using biomechanics methods, through the study of the influence of different injection and maintain period on the expansion efficacy and shrinkage rate of skin, a rapid expansion method with relatively big expansion area is proposed ; biomechanics analysis in vivo is been made on the expanded skin ; comparing the biomechanics property in vitro of the rapid expansion and conventional expansion with different maintaining times, the parameters such as strength, stress - strain relationship, stress relaxation and creep which reflect the characteristic of the expanded skin have been obtained ; making the research of the expanded skin ' s biomechanics changes at different stage after grafting, the long - term and short term diversified regular has been obtained ; making experimental study and discussing the changes in the microcirculation and vessel structure of exceedingly expanded shin, the relationship between survival length of flap and the changes has been gotten
本課題旨在用生物力學的方法通過動物實驗來研究不同注水擴張期和維持擴張期對皮膚擴張量和皮膚回縮的影響,探討有效獲取較大的擴張皮膚面積的快速擴張方法;對擴張皮膚進行在體生物力學特性分析;比較了快速擴張和常規擴張在不同維持期的皮膚離體生物力學特性,得到離體生物力學各參數,如強度、應力?應變、應力鬆弛、蠕變等;為全面了解擴張皮膚在移植后的近期和遠期的變化規律,做了擴張皮膚移植后不同階段的生物力學變化的實驗研究;探討了不同擴張量時皮膚的微循環變化和血管結構變化與皮瓣存活的關系。At present, the research on 3 - d braiding composite ' s creep behavior were little, however, the influence of 3 - d braiding composite ' s creep property on its applied procedure is large. so the work of this thesis will have significant meanings for the theoretical research and applications of 3 - d braiding composites
目前,國內外三維編織復合材料蠕變問題的研究相對較少,且三維編織復合材料的蠕變性能對其使用過程影響很大,因此本文的工作無論對於三維編織復合材料製品的生產及使用,或是三維編織復合材料蠕變理論方面的研究,都將具有比較重要的意義。Concretely, 1, base on the viscoelastic mechanism of polymer depend on time, single axes stretching experiments are proceeded to research viscoelastic distortion of high polymer with the dependence on non - linearity and stress. we get each material parameter by dealing with the data of experiments, and contrast several theories of one dimension creep. 2
根據聚合物時間相依的粘彈性機理,對pmma試件進行了單軸拉伸蠕變實驗,著重研究了高聚物粘彈性變形的非線性及應力水平相關性;在此基礎上,對實驗數據進行擬合,得到了各個材料參數,並對幾種現有的一維蠕變理論進行了對比分析; 2So creep property is an important guideline to characterize its mechanics performance. the research of three dimensional braiding preform reinforced resin composite ' s creep property was conducted systematically by this thesis with creep testing system, experimental analysis, theoretical analysis, and some new opinions and methods are proposed
本文從樹脂基三維編織復合材料的蠕變測試系統,試驗分析、理論分析等方面,對樹脂基三維編織復合材料蠕變行為進行了比較系統的研究,提出了一些新的觀點、新的方法。It was shown that there were many factors impacting on the creep characteristics of soils, such as the initial degree of consolidation, drainage condition, load ratios and so on ; and the relationship between coefficient of secondary consolidation and consolidation pressure depended on preconsoildation pressure and load ratios in the test
結果表明:軟土的蠕變特性與多種因素有關,包括土體的初始固結度、土層排水條件、加荷比等:次固結系數與固結壓力的關系取決于土體的先期固結壓力和試驗中的加荷比。( 1 ) an optical technique is presented to quantify the creep crazing damage in stressed transparent glassy polymeric sheet of pmma. craze area density in this article is defined by ratio of crazing area and the overall area of the region selected. the specimens were loaded for a defined period of time under creep condition with room temperature, by optical microscope the evolvement of craze density varying with stress and time is obtained
Pmma ( polymethylmethacrylate )是一類重要的高聚物材料,在應用上屬于用量大、使用范圍廣的一類通用材料,本文選用pmma為主要研究對象,主要研究成果如下: ( 1 )用顯微鏡對透明玻璃態材料pmma蠕變條件下的銀紋損傷引發和演化進行了實驗觀測,將銀紋所佔面積和所取圖象視場總面積的比值定義為銀紋密度,得到了銀紋密度隨時間和應力變化的演化方程。Because of the addition of filling agent, some characteristics of polyterafluoethylene are greatly improved, especially on abrasion resistance, heat conductivity, contravariance and self lubrication, which are obviously better than pure polytetrafluoethylene products
由於填充劑的加入,從而大大改善了聚四氟乙烯的某些特性,特別是耐磨耗、導熱、抗蠕變、自潤滑方面比純聚四氟乙烯製品有較明顯的改善。Recommendations for the presentation of plastics design data - mechanical properties - creep lateral contraction ratio poisson ' s ratio
塑料設計數據表示方法推薦標準.第1部分:機械特性.第1節:蠕變.第3小節:蠕變橫向收縮比Study of types of polymers ; fundamentals of viscoelastic phenomena such as creep, stress relaxation, stress rupture, mechanical damping, impact ; effects of chemical composition and structure on viscoelastic and strength properties ; methods of mechanical property evaluation
研究聚合物的類型;基本的粘彈現象比如蠕變、應力松馳、應力斷裂、機械阻尼、沖擊;化學組成和結構對粘彈體和力性能的影響;力學性質的測定。Element constitutive model is adopted to testify the necessity of non - stationary parameters. one - dimensional non - stationary visco - elastic creep equation of rock is given. according to data contrast of theory and experiment, non - stationary visco - elastic constitutive model more accurately reflects the deformation capability of rock than the constant one
建立了一維情況下,非定常粘彈性模型的蠕變方程,通過理論計算結果與試驗結果的對比,發現非定常粘彈性模型比定常粘彈性模型更為準確的反映了巖石的粘彈性變形性能。Forth, the glass transition temperature, creep and strain recovery of strain gage backing materials were determined by dynamic mechanical analysis ( dma ) and differential scanning calorimetry ( dsc ). the influence temperature and stress imposing on creep were also discussed respectively. glass transition temperature, creep and strain recovery of five different composites films were compared
考察了溫度、應力對蠕變性能的影響,並對五種不同組分復合材料薄膜的玻璃化轉變溫度tg 、蠕變和應變回復率進行了比較,結果顯示,按照最佳配方制備的應變片基底玻璃化轉變溫度tg高、應變小、應變回復率高,蠕變性能最好。Involving interaction of gasket, bolts and flange rings, the load - deformation and the structural fuzzy reliability of each component are analyzed in the case of ideality, external loads and creep - relaxation respectively. and then, the sealing fuzzy reliability of the flanged connection system is researched. the function of each part of genetic algorithm is analyzed in application to nonlinear unconstrained and constrained optimization
本文將墊片、螺栓和法蘭作為一個相互作用的整體,比較深入地分析了理想情況下、有外載作用及蠕變-鬆弛影響下,平墊片和0形圈這兩種典型的火箭發動機法蘭連接系統各元件的載荷與變形、元件的結構可靠度和火箭發動機法蘭系統的密封可靠度。分享友人