延性裂紋 的英文怎麼說
中文拼音 [yánxìnglièwén]
延性裂紋
英文
ductile crack-
Increasingly widely use of nonlinear viscoelastic materials, use of materials under extreme conditions, along with frequent occurrence of delayed catastrophic accidents, all these make the study a pressing problem of initiation and crack growth of nonlinear viscoelastic fracture
隨著非線性粘彈性材料的廣泛使用和材料在極端條件下的使用，在長期荷載作用下頻繁出現的延遲性的災難性的事故使得非線性粘彈性的裂紋起裂時間和裂紋擴展速度的研究成為亟待解決的問題。Fracture mechanics toughness tests - method for determination of fracture resistance curves and initiation values for stable crack extension in metallic materials
斷裂機械韌性試驗.金屬材料穩定裂紋延伸的抗斷裂曲線和初始值的測定方法The dsf is a high strength for regarding polypropylene as raw material, with special craft making, fiber of low extension polypropylene, and can avaylably control the concrete, and fuck, temperature to contract the produce, improving of crack the concrete s anti the function, anti to pound at the ability, extension concrete the service life that product
丹強絲一種以聚丙烯為原料，以特殊工藝製造的高強度，低延伸性聚丙烯纖維，可以有效地控制混凝土塑性，干縮、溫度收縮裂紋的產生，改善混凝土的抗滲性能，抗沖擊能力，延長混凝土製品的使用壽命。Calculating example shows that the fracture parameters of viscoelastic interface crack have a time correlation behave, its extend is a kind of delay instability
計算表明，粘彈性界面裂紋的斷裂參量表現為時間相依性，粘彈性界面裂紋的擴展一般為延遲失穩。Experimental results indicated that the polypropylene fiber can improve the workability of concrete availably, and can increase the presentation quality of structures with the voids and pits decreased ; the cracks of beam are controlled effectively, the width and length of crack decreased, the dispersibility of crack in beam face improved, and the ductility of beam increased ; and the cracking load of reinforced concrete beam is increased, the amplify up to about 30 %, simultaneity the ultimate bear capacity increased
試驗研究表明，使用聚丙烯纖維后，能有效改善新拌混凝土的和易性，並能增強混凝土構件的外觀質量，減少構件表面蜂窩、麻面、氣孔、細小裂紋等；同時，在破壞試驗過程中發現梁的裂縫能得到有效控制，裂縫寬度減小，裂縫的發展高度降低，裂縫的條數增加，提高了梁截面的裂縫分散能力，增強了梁中混凝土的韌性；提高了鋼筋混凝土梁的開裂荷載，幅度可達30左右，增強了結構的延性，提高了結構的抗裂性能和屈服荷載。To generalize the eccentricity ratio effect on ultimate tensile strength of ductile plates, the elesto - plastic finite element method is undertaken and a mathematical transition expression of normalized ultimate tensile strength of center - cracked, eccentrically cracked, edge - cracked plates is accordingly deduced
對于偏心裂紋延性板，採用彈塑性有限元進行了大量的組合計算，分析了相對裂紋長度、材料屈強比和裂紋偏心度對板的拉伸極限強度的影響，並給出了方便計算的回歸公式。It is found that the result predicted is in a good agreement with the experiment, and the cell model gives a good description of ductile crack growth
表明特殊單元模型能很好地描述材料的抗延性裂紋擴展阻力特性。The effects of strength mis - matching and specimen geometry on the resistance to ductile crack growth for welded joint were conducted by 3 - d fe analysis based on the micro - damage model
摘要基於材料微觀損傷模型，採用三維有限元數值方法，定量研究了焊接接頭中強度匹配、試件幾何型式對接頭抗延性裂紋擴展阻力特性的影響。分享友人