fiber-to-fiber contact 中文意思是什麼
fiber-to-fiber contact
解釋
纖維間接觸點-
Here, fem is applied in the analyses of i ) fiber axial stress and interphase shear stress in fragmentation tests during initially applied strain, ii ) influence of temperature on the stress transfer across the interface, iii ) modulus and thickness of the interphase and their influence on interfacial stress transfer, iv ) interfacial debonding process, and v ) fragment aspect ratio, contact friction along the interface and their influences to the interfacial stress transfer efficiency
在論文的這部分工作中，使用有限元法描述和分析了逐節斷裂試驗中初始應變下的纖維軸向應力和界面相剪切應力，溫度對界面應力傳遞的影響，界面相模量和厚度、纖維節長寬比、界面脫粘過程、界面接觸中的摩擦效應等因素對逐節斷裂試驗中應力傳遞的影響。 -
The results indicated that the dimension, shape and purity of base material could meet the functional demand of solid lubricant ; the thermal decomposition temperature of ptfe resin exceeds 400 c, but organic and inorganic packing filler added in ptfe made the water absorption rate of composite material increased, melting temperature and decomposition temperature decreased, in the meanwhile oxidative decomposition reaction was accompanied ; polar groups such as c = o, c - o - c and so on in the carbon fiber surface is advantageous to increase compatibility with other components and interlayer shearing strength ; uniform design experimental method could help to find the relationship between formula and frictional property by relatively small tests. the developing trend of each formula ' s friction coefficient could be showed by fitting curve ; the friction coefficient with no copper powder or graphite in formula was relatively big. this fact showed that copper powder and graphite should be used cooperatively ; it was found that when the ratio of copper powder to graphite by weight is 15 : 60, 30 : 30 - 40 and 60 : 15 - 30 respectively, the friction coefficient was relatively small. the degree of crystallinity of pure ptfe reached maximum by air cooling and the abrasion loss also reached maximum among three ones ; at the same time, the abrasion loss of solid lubricant sample was also the biggest among three ones ; when solid lubricant matched with 45 # steel axle or gcrl5 steel axle, lubricant transfer film could be formed on metal surface, thus direct contact between the surface of metal friction pair rings was reduced. their working life was elongated extremely ; there was mainly much graphite, a little ptff, moo3, feso4, cus and so on in lubricant transfer film
試驗結果表明：所選原料的尺寸、形狀及純度可滿足固體潤滑劑的性能要求；聚四氟乙烯樹脂熱分解溫度超過400 ，但在ptfe中加入無機填料會使復合材料吸水率提高，熔融溫度及分解溫度降低，且伴有氧化分解反應；碳纖維表面含有c = o及c - o - c等極性基團，有利於提高其與其它組分的相容性，提高層間剪切強度；均勻設計試驗方法能夠用較少的試驗次數找出配方與摩擦性能間的關系，擬合曲線基本能表示各配方的摩擦系數發展趨勢；配方中不加銅粉或不加石墨，其摩擦系數均較高，說明銅粉和石墨應該配合使用；當銅粉15份、石墨60份時，銅粉30份、石墨30 - 40份時，銅粉60 、石墨15 - 30份時，摩擦系數均具有較低值；純聚四氟乙烯樹脂在空氣冷卻時結晶度最大，磨損量也是三者中最大的；同時，固體潤滑劑試樣在空氣冷卻時的磨損量也是三者中最大的：不論是固體潤滑劑與45 #鋼軸配副或是固體潤滑劑鑲嵌入銅套后與gcr15鋼軸配副，在金屬表面均可形成潤滑轉移膜，從而減少金屬摩擦副表面間的直接接觸，大大延長其使用壽命;轉移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。 -
The results of numerical simulations and analytical solution show good accordance, except in the region near the fiber ends, where the shear - lag approach causes considerable discrepancy. next, to overcome the unrealistic assumption of perfect bonding, augmented - lagrange contact algorithm, element " birth - death " and fem are combined in the study of the partial debonding between fiber and matrix under pull out forces
然而完全粘結的假設過于理想，與實際應用相差較大，因此，本論文將有限元法，接觸演算法和單元生死法結合起來，研究較大抽拔力作用下，纖維與基體之間發生的逐步脫粘的過程，所得到的抽拔力的變化結果，與試驗數據比較，較為一致。 -
We use are the membrane material, is the two axle adds the polyvinyl - chloride to the polyester fiber filament to soak spreads the material product. this is one kind of tenacious bucky adds the pvc coating the compound materials, regardless of is conghua studies the ingredient the analysis result to look from many years use result, all cannot causes the damage in the use and in the contact to the human body health, definitely may not have the worry the use
堅韌的布基加pvc塗層的復合材料，無論是從化學成分的分析結果還是從多年使用的結果來看，都不會在使用和接觸中，對人體健康造成傷害，完全可以無顧慮的使用。 -
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明西系統工程師一直致力於跟蹤世界上最新的通訊技術的發展應用，高素質的營銷隊伍與客戶保持密切的聯系，為滿足客戶的各種要求.公司長期承包計算機網路工程，廠房監控系統工程，門禁，考勤，周界報警系統，公共廣播系統，小區智能化建設，光纖熔接工程技術強項，明西始終抱著客戶的滿意，才是明西的追求為準則，憑借在系統設計，工程實施方面的綜合優勢和廣泛的用戶基礎，結合實際情況和相應標準並，根據不同客戶的要求，提供最切實可行的技術方案及系統產品，為用戶提供最佳的系統解決方案
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