拉伸程度 的英文怎麼說
中文拼音 [lāshēnchéngdù]
拉伸程度
英文
level of stretch-
The results from x - ray diffraction demonstrated that pp / mmtome was a fully intercalated nanocomposite, pp / mmtom and pp / ommt were partly intercalated nanocomposites, but the intercalation effect of pp / mmtom nanocomposite was better ; the crystallization characteristics of pure pp and pp / mmt nanocomposites were investigated by dsc, waxd and pom. the result of these testing showed that mmt nano - layers acted as nucleating agents for the crystallization of pp, the addition of mmt had effect on the crystallization process, leading the increasing of crystallization temperature crystallization rate and crystallinity, but also the dimension of spherulite reduced. but the formation of pp crystal did n ' t change, the formation of pp crystal in three pp / mmt nanocomposites and pure pp were a - form on the whole ; influences of three sorts of mmt on mechanical properties of pp / mmt nanocomposites were studied, as a result, the addition of mmt comprehensively improved mechanical properties of pp : notched impact strength, tensile strength and flexural properties were all increasing, but the extent of increasing were n ' t large
通過xrd分析比較這三種pp mmt納米復合材料微觀結構得到， pp mmt _ （ ome ）屬于完全插層， pp mmt _ （ om ）與pp ommt的插層程度相近，但是pp mmt _ （ om ）相對較好；通過對純pp和三種pp mmt納米復合材料的結晶性能研究發現，蒙脫土納米片層對pp結晶產生明顯的異相成核作用，結晶能力增強，使pp的結晶溫度和結晶速率提高，結晶度增加，球晶晶粒細化，但是沒有改變pp的結晶形態，三種pp mmt納米復合材料的結晶形態都屬于晶；通過對pp mmt納米復合材料的力學性能測試得知，蒙脫土的加入全面提高了pp的力學性能，缺口沖擊強度、拉伸強度和彎曲性能都有一定程度的提高，浙江{ _業大學碩十學位論文摘要但是提高幅度都不是很大，不過ommt 、 mmtom和mmtc ） me三種蒙脫土對pp力學性能有著不同的改性作用，其中pp / mmtom最好， pp月邊mto崛次之， pp / ommt最低，這種情況主要是由蒙脫土對pp結晶性能的影響和蒙脫土的納米改性作用造成的。The v was tested by yjy stress transducer with mvad card by the methods of recording the deformation in the wideness and thickness direction of the specimens during the tensile test. a stable auxetic polyolefin blend with the minimal value - 1. 4 was observed after repeated test
採用附有mvad通道卡的yjy型片式傳感器，記錄試樣在拉伸過程中寬度和厚度方向的形變並根據泊松比的定義進行計算，反復實驗后獲得最小值為- 1 . 4的負泊松比烯烴共混體系。Non - linear finite element analysis of rubber layer bonded between two rigid spheres has been performed for rubber ’ s characteristic of large deflection and nearly incompressibility. the relationships between stiffness and deformation have been gained when large tensile deformations are imposed. the effects of different poisson ’ s ratios of rubber matericals on the stiffness and stresses of rubber layer have
針對橡膠的大變形及接近不可壓縮的特點，對工程中常用的橡膠-剛球支座進行非線性有限元分析，了解了支座的剛度和應力的變化情況以及泊松比對兩者的影響，得出的支座受軸向拉伸時的剛度與軸向變形關系。( 1 ) systematic triaxial compression tests are made for the sand reinforced by various national geosynthetics. comprehensive investigations into the interaction characteristics are also made between sand / lime fly ash and various national geosynthetics by direct shear tests and pull out tests, which can help choosing geosynthetic type and understanding the geosynthetic reinforcement mechanism ; ( 2 ) this paper is also firstly systematically presents the results of a comprehensive investigation into the interaction characteristics between lime fly ash and various national geosynthetics ; ( 3 ) by non - linear fem, the influence of the modulus of geosynthetics, the thickness of the soft ground and the width of the foundation on the effectiveness of geosynthetic reinforcement are also studied ; ( 4 ) the main conclusions are as followed : ( geotextiles are likely to be suited for projects allowing high displacement, polyester warp knitting geogrids and oriented geogrids for projects allowing medium displacement, glass fiber geogrids for projects allowing low displacement and geonets for secondary projects. ( the confining effect of fill material to act on different kinds of geosynthetics varies largely, which must be considered
（ 1 ）本文利用三軸壓縮試驗，比較各種國產土工合成材料對砂土的加筋效果；利用直剪試驗和拉拔試驗，比較各種國產土工合成材料與砂土或石灰粉煤灰的界面摩擦特性，深入研究土工合成材料的加筋機理，首次明確提出加筋土工合成材料的選型原則； （ 2 ）本文首次系統地研究了石灰粉煤灰與各種國產土工合成材料的界面摩擦特性； （ 3 ）本文採用有限元法，系統研究了加筋模量、軟土地基厚度、基礎寬度等因素對土工合成材料加固軟土地基效果的影響； （ 4 ）本文主要結論如下： （無紡土工織物適合用於允許大變形的加筋土工程；滌綸纖維經編土工格柵和塑料拉伸土工格柵適合用於對變形有較嚴格要求的加筋土工程；玻璃纖維經編土工格柵適合用於對變形有嚴格要求的加筋工程；土工網適合用於低等級的加筋土工程。The in - plane equivalent elastic modulus and tensile strength of stitched composite laminates are studied, and it ' s found that the in - plane equivalent elastic modulus decreases with the increase of stitch density, stitch thread diameter, maximal misalignment angle and the distortion width, and the range is about 5 %. the tensile strength of stitched composite laminate increases with the increase of stitch step and decreases with the stitch space. the
研究結果表明：隨著縫紉密度、縫紉線直徑、最大纖維偏轉角和縫紉變形區寬度的增加，縫紉復合材料層合板面內等效模量逐漸降低，最大降幅一般在5 %左右；縫紉復合材料層合板的拉伸強度隨縫紉針距的增加而增大，隨縫紉行距的增加而降低，因此縫紉密度對拉伸強度的影響程度要看具體的縫紉針距和行距。The fiber tensile strength is affected by concentration, temperature and minus stretch during coagulation, while the fiber structure and performance are obviously in fluenced by stretch temperature, medium and ratio
纖維的拉伸強度在凝固成形過程中受到凝固浴濃度、溫度和負拉伸的影響，同時在纖維的拉伸中拉伸的倍數、溫度和介質等也影響著纖維的結構和性能。Abstract : coagulation and stretch are two crucial working procedures during precursor fabrication, which play important roles in precursor structure and performance. the fiber tensile strength is affected by concetration, temperature and minus stretch during coagulation, while the fiber structure and performance are obviously influenced by stretch temperature, medium and ratio
文摘:凝固成形和拉伸是原絲生產過程中兩個十分關鍵的工序，它們對聚丙烯腈原絲的結構和性能有著重要的影響.纖維的拉伸強度在凝固成形過程中受到凝固浴濃度、溫度和負拉伸的影響，同時在纖維的拉伸中拉伸的倍數、溫度和介質等也影響著纖維的結構和性能The lens body of the product is made of the improved engineering plastic, which bears a strong anti - stretch intensity and measures up the clinic requirement towards the intensity of the anesthetic laryngoscope
麻亮爽鏡體採用改進工程塑料注塑而成，具有很高的抗拉伸強度，符合臨床對麻醉咽喉鏡的強度要求。On the basis of the research by former people, the work of this paper includes several aspects as follow : throughout a great deal of experiment of the mechanics performance of 2d weave c / sic composite materials laminated plate, we simulated the nonlinear relationship between a and e in the tensile course ; and we inspected the original damages and the damages evolvement ; and we made the statistic analyses of the tensile strength. some important conclusions have been given in the paper
主要有以下幾個方面：在大量二維編織c sic復合材料力學常規性能的實驗基礎上得到了拉伸實驗中卸載點和卸載模量，卸載模量和加載斜率，加載斜率和應力等之間的關系，並在此基礎上得到了模擬同種材料拉伸曲線的非線性的應力?應變關系；配合我們的實驗過程進行初始損傷和缺陷的檢測以及實驗過程中材料損傷演化過程的動態無損檢測；對我們現有的二維編織c sic復合材料拉伸強度數據進行了分佈擬合。The relationship between drawing top limitation and characteristics of scallop formation and thickness irregularity along article perimeter is found
確定了極限拉伸程度與齒槽形成特性和零件周邊壁厚差特性間的關系。The formulas for calculating top limitation of drawing originated from the deformation limits on the flange and the wall of cylindrical articles are developed
從圓柱形零件的凸緣上和壁上的允許變形出發，獲得了極限拉伸程度的計算公式。We also found that the rheological behavior of single layer gmt is isotropic. temperature and pressure method has great affection on the distribution of the fiber. second, we measure the pressure change under different molding rate and use extensional viscosities model and shear force model to analysis the data
研究表明： gmt材料具有很好的充模流動性，流動過程中纖維氈保持一個整體； gmt材料擠壓流動行為表現為各向同性；溫度、壓力制度對纖維的均勻分佈影響很大： 2 ）通過測量不同合模速率下壓力變化，採用拉伸粘度模型（ extensionalviscositiesmodel ）和純剪切流動模型（ shearforcemodel ）對數據進行分析，導出了描述gmt材料宏觀行為的流變學參數。We first expand the nonlinear temperature - dependent convective and radiative heat transfer coefficient about the ambient temperature by taylor - series method, and then the crystal temperature and the pull rate as well as the bulk melt temperature are determined by the perturbation techniques in a simply analytical manner
分析之過程為首先將隨溫度變化之對流系數及輻射系數做泰勒級數展閉，再以攝動理論之技巧，同時求解晶圓棒之溫度、拉伸速度及溶解液之溫度。By the analysis, it was found out that the key control factor determined the speed limit and storage energy was the poor transverse tension strength of the composites. therefore, if only fibers of high longitudinal tension strengths were used in the rim, high rotate speed and high energy storage density of flywheel rotor would not be achieved
經過理論推導及程序優化比較，發現，影響飛輪轉子極限轉速和儲能量的主要控制因素，恰好是其復合材料輪環較為薄弱的橫向拉伸強度，因此單純地通過採用高縱向拉伸強度的高強碳纖材料來製造飛輪轉子，並不能得到期望的高轉速和儲能密度。The calculated value of shear force model fit well with the experimental results. it means that compare to the tensile stress during squeeze flow the shear stress can be omitted especially when the molding rat e is low and distortion rate is low
拉伸粘度模型的計算結果與實驗結果吻合得相當好表明：在合模速率不大或變形率不是很大的情形下，擠壓流動過程中剪切力相對于拉伸應力可以忽略。Following conclusions are made. 1. when added lldpe and ldpe, tensile strength, tear strength and puncture strength of mpe and smpe films decrease by different extents
在smpe和mpe中加入ldpe和lldpe ，共混體系（薄膜）的拉伸強度、撕裂強度和穿刺強度均有不同程度的下降。The multifilament tension strength test was firstly applied to characterizing carbon fibers damage degree in cmcs during pip, which as an intractable problem was resolved successfully
本文首次應用復絲拉伸強度測試來表徵pip工藝中碳纖維的損傷程度，較好地解決了陶瓷基復合材料中碳纖維損傷程度如何表徵這一棘手的問題。With 20 % coupling agent, composites with 40 % and 50 % wood - flour content gain better storage moduli ( e " ) than these without coupling agent, and composites with 40 % and 50 % wood powder content attain the increments in tension and bending strength of 10 % and 40 % respectively, the rotate speeds of extruder affect the mixing of wood powder, coupling agent and polystyrene
3 ）雙螺桿擠出機的轉速影響著木粉偶聯劑和聚苯乙烯的均勻混合程度。研究發現，雙螺桿轉速為40rpm時，復合材料性質好於其它轉速。 4 ）木粉含量為40 ，偶聯劑含量為20的復合材料其力學強度（拉伸強度為40 . 22mpa ，彎曲強度為76 . 192mpa ）和存儲模量明顯高於其他工藝條件的復合材料。The tensile strength of carbon fibers generally lowered than that without heat - treatment, and the decreased value was various with the different temperature treatment
高溫處理導致炭纖維拉伸強度發生較大損失，在本次試驗中，在不同的熱處理溫度下，纖維強度下降的程度不同。The results show that the tensile strength can be enhanced, the melting point has moved to higher temperature, and the dimension of crystal grain has decreased which improve the perfection of crystal, but there is no obvious change in crystal shape
結果表明，施加振動后，拉伸強度提高，熔點向高溫漂移，晶粒尺寸變小，完善程度提高，但晶型未發生明顯的改變。分享友人