韌型的 的英文怎麼說
中文拼音 [rènxíngde]
韌型的
英文
libriform-
Japanese leaders set about with characteristic tenacity to restore japan's position.
日本領導人又以典型的堅韌不拔的精神著手恢復日本的地位。Tesa 4252 is a type of economy soft pvc electrical insulation tape. it has a fine flexible and electrical insulation property
德莎4252是一款經濟型的軟性pvc電工膠帶。它具有良好的柔韌性及絕緣性能。2. because the fracture mode of 3d braided cmc is the interfacial fracture of mode i and mode ii, energy release rate gc and complex stress intensity factor kc was designated as characterization parameters of fracture toughness in the linear fracture theories. 3
根據三維編織c sic復合材料斷裂韌性的表徵問題屬于線彈性理論范疇以及材料斷裂模式是界面損傷破壞模式的實驗研究結果,提出了該材料的表徵參量應該使用與界面相關的型和型混合斷裂的能量釋放率g _ c ,或者使用復應力強度因子k _ c 。The zirconia ceramics, with its high hardness, high strength and high corrosion protection, is the toughest of the ceramic family, and therefore the widely applicable material in the new century
納米氧化鋯是一種新型的高科技材料,具有陶瓷材料中最高的韌性和耐磨度。並有高強度、高硬度,耐高溫和耐化學腐蝕等優良性能,成為新世紀應用廣泛的新型陶瓷。Joined with the kinked model, fractal dimension of crack is calculated, the theoretic model of fractal fracture toughness is proposed and is verified with the results of experiment
結合裂紋彎折擴展模型,計算了裂紋分形維數,提出了分形斷裂韌度的理論模型,並與實驗結果進行了驗證。Bi - material interfacial fracture theories are researched with a phenomenon that cracks extend along interface. a gradient invading model of interface crack at the crack tip can gain stress fields along interface. so a formula of energy release rate for 3d braided cmc is deduced and the corrected formula of the energy release rate is examined with test results
研究了裂紋沿界面擴展的雙材料界面斷裂理論,利用傾斜侵入界面的裂紋模型解析了裂紋尖端沿著界面的應力場,推導了表徵三維編織cmc復合材料斷裂韌性的能量釋放率公式g _ c ,並且用試驗結果驗證了能量釋放率公式的正確性。The impact behaviors of pp / eoc and pp / caco3 were compared. the toughening mechanisms of pp / eoc and pp / caco3 systems are firstly proved to agree well with wu ' s percolation theory. the essential condition occurring brittle - tough transition in two binary systems is that the matrix ligament thickness ( l ) is lower than the critical matrix ligament thickness ( lc ) which is approximate to 0. 095 ? m
比較ppffioc和ppcacos二體系的增韌行為,發現加入eoc和cacos都能增韌pp ,首次驗證了新型彈性體eoc和無機剛性粒子cacos增韌pp的機理符合wu氏逾滲理論,二體系發生脆韌轉變的基本條件是基體帶厚度l小於臨界基體帶厚度人( 。When adopting fea to model, dfc could not only apply into incremental approach with a fully coupled elastic and plastic damage model, but to one step inverse approach
利用有限元方法模擬時,韌性斷裂準則既可以應用到完全耦合的彈塑性損傷模型的增量方法中,也可以應用到一步有限元逆演算法中。Combining the fracture toughness test results of rcc specimens with the existed size effect formula for fracture toughness of common concrete, the suitable size effect formula fur fracture toughness of rcc was gotten on the comparative of results of the computation models
將碾壓混凝土斷裂韌度試驗結果與已有的普通混凝土斷裂韌度尺寸效應公式結合,通過對幾種模型的計算結果的分析比較,得到了碾壓混凝土所適用的斷裂韌度尺寸效應公式。The fractorgraphy analysis show that in the layer rich in w and mo, the feature of fracture is brittle fracture which follow the bordline of crystal. in sections rich in the felt metal, the feature of fracture is ductile fracture. in w - mo layer, the feature of fracture are brittle fracture and some ductile fracture
斷口形貌特徵研究表明,富w區、富mo區主要為沿粒界脆性斷裂;粘結金屬發生韌性斷裂; w - mo混合區為顆粒的沿粒界脆性斷裂和粘結相的韌性斷裂的混合型斷裂;富ti區為典型的穿晶解理斷裂; mo - ti混合區以穿晶解理斷裂為主,顆粒邊界表現出準解理斷裂特徵。Resulting in less stress on the posterior cruciate ligament for a safer, more effective movement
字型韌帶的壓力,使鍛?更加安全有效。The relative density of the sample has reached as high as 97. 4 % of fully dense. the mean micro hardness has reached hv496. 3. the fractography of the fracture section of the tensile sample was characteristic of dimple typically which indicated that the fracture belong to ductile fracture
;試樣相對密度可以達到理論值的97 . 4 ;硬度方面由於激光立體成形工藝的特點,最後幾層的硬度比開始時的高,平均硬度達到了hv496 . 3 ;拉伸試樣的斷口形貌具有典型的韌窩特徵,屬于延性斷裂。By compounding caco3 with pp, the effect of caco3 content, diameter and shape on the crystallization, dispersion morphology and properties of pp / caco3 composites was investigated. the results showed that addition of caco3 into pp decreased the apparent crystal size in perpendicular direction to the ( 110 ), ( 040 ) and ( 130 ) crystallographic planes of ppa crystal, and with similar uniform dispersion of caco3, the dominant factor influencing toughness is the diameter of caco3 particles, but not the decrease of pp crystal size. the toughening effectiveness of nano caco3 is obviously better than that of micron caco3
將caco _ 3與pp進行填充復合,研究了caco _ 3含量、粒徑及形狀對體系的結晶,分散形態及性能的影響,發現碳酸鈣的加入使聚丙烯晶型垂直於( 110 ) 、 ( 040 )和( 130 )晶面的表觀晶體尺寸減小,揭示了在分散均勻的情況下,影響材料韌性的主導因素不是晶粒尺寸的減小,而是碳酸鈣的粒徑,納米張玲:彈性體及無機剛性粒子增韌增強聚丙烯復合材料的研究碳酸鈣的增韌效果明顯優于微米碳酸鈣。The dcb ( double cantilever beam ) met hod to test the interlaminar toughness of fabric - reinforced laminates and the modified compliance calibration method ( mcc ) were adopted in this research. the double cantilever beam ( dcb ) test was executed for stitched laminates to evaluate the interlaminar fracture toughness. the stitch parameters ( stitch line spacing and pitch spacing ) were changed and their effects on interlaminar fracture toughness were examined by means of dcb test by using improved insert type loading fixture
試驗中採用改進的插入型夾具、雙懸臂梁dcb ( doublecantileverbeam )試驗方法,測試了載荷?試樣開口位移曲線,依據改進的柔度梁方法( modifiedcompliancecalibrationmethod ( mcc ) )計算出了各個試樣的層間斷裂韌性( r曲線)及層間斷裂韌性的平均值,闡明了縫合工藝參數與層間斷裂韌性( g _ ( ic ) )間的關系,以拉伸與彎曲強度為約束條件,以層間斷裂韌性值為目標優化了縫合工藝。Taking in - situ toughened silicon nitride as a design object, principle component analysis ( pca ) is applied to study the microstructure and mechanical properties, to find out the main microstructure controlling factors, and to simplify the characterization variables and criterions ; fuzzy neural networks ( fnns ) is also applied to develop a design expert system for this material, which can realize the forward prediction from processing, microstructure to mechanical properties, and backward design from mechanical properties or microstructure to processing ; monte - carlo method is applied to simulate the grain growth of this material, and then crack propagation is simulated, which is another way based on physics and chemistry to developing prediction models from processing until to mechanical properties
本文以自增韌氮化硅陶瓷為設計對象,運用主成分分析法( principlecomponentanalysis : pca )對自增韌si _ 3n _ 4陶瓷的顯微結構和力學性能進行數據空間降維,獲得自增韌si _ 3n _ 4陶瓷顯微結構控制的主要因素,進而簡化了表徵參量變量和準則;運用模糊神經網路( fuzzyneuralnetworks : fnn )建立了自增韌si _ 3n _ 4陶瓷設計專家系統,能實現工藝?微結構?性能的正向預測及反向設計;運用monte - carlo方法( mc )進行自增韌si _ 3n _ 4陶瓷的晶體生長模擬,然後進行裂紋擴展模擬,探索建立工藝?微結構?力學性能預測模型的思路。From the pom photos of polypropylene sp herical crystal, we could see that the polypropylene spherical crystal were diminished obviously, which is one of the two reasons that toughness of ppmn was improved
Pom照片表明, ppmn中pp球晶明顯細化,這與聚丙烯晶型的形成同為ppmn韌性提高的原因。There is a criteria triaxiality, which is a material constant, which when triaxiality of material is larger than the fracture belongs to void - mode, and in reverse, belongs to shear - mode
存在材料常數? ?臨界應力三軸度,材料內應力三軸度高於臨界值時,斷裂為韌窩型的,反之,為剪切型的。Synthetic maro - fiber is a new type reinforcement material that appeared in the last of 20th century. when compared to steel fiber and synthetic micro - fiber, the synthetic macro - fiber offers a large number of advantages : ( 1 ) light ; ( 2 ) evenly distributed ; ( 3 ) erosion resistance ; ( 4 ) obviously improves the impact resistance, flexural toughness, fatigue and seismic properties ; ( 5 ) resistance for early crack ; ( 6 ) prominent advantage in shotcrete
粗合成纖維興起於20世紀末,它是一種新型的增強增韌材料,相對于鋼纖維、細合成纖維,它具有明顯的競爭優勢: ( 1 )質輕; ( 2 )無腐蝕; ( 3 )易於均勻分散; ( 4 )顯著提高混凝土的韌性、抗沖擊、抗疲勞、抗震防爆性能; ( 5 )可以提高塑性混凝土的早期抗裂性能; ( 6 )在噴射混凝土中具有顯著的優勢。( 6 ) the abnormality criteria of fracture mechanics are employed to diagnose the abnormality of the crack, and the inversion of the concrete fracture roughness is studied. the space prediction model of the anomalous load is presented using neural network. the load surface of stress intensity factor and its corresponding plane is given and employed to diagnose and predict the abnormal load of the crack
( 6 )應用斷裂力學理論,對裂縫轉異進行診斷,並探討了混凝土斷裂韌度的反演分析方法;建立了反映荷載組合與應力強度因子之間關系的神經網路模型,反饋分析裂縫的轉異荷載,在此基礎上,研製了應力強度因子的三維荷載曲面圖以及相應的二維平面圖,提出裂縫轉異荷載的空間預報模型;並通過實例驗證。The material also is recommended for contour extrusion and for blow molding of toys, gaskets and other parts requiring permanent flexibility, stress cracking resistance and low temperature toughness
這種材料也被推薦用於製造玩具,墊圈和其他要求有長期的彈性,抗應力裂紋和低溫韌性的輪廓擠出成型和吹塑成型中。分享友人