裂紋力學 的英文怎麼說

中文拼音 [lièwénlìxué]
裂紋力學 英文
crack mechanics
  • 裂 : 裂動詞[方言] （東西的兩部分向兩旁分開） open
  • 紋 : 名詞（花紋; 紋縷兒） lines; veins; grain
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 學 : Ⅰ動詞1 （學習） study; learn 2 （模仿） imitate; mimic Ⅱ名詞1 （學問） learning; knowledge 2 （學...
  1. Atomistic simulation of crack propagation and its size - dependent behavior

    分子動力學模擬裂紋擴展及相關尺寸行為
  2. The results show that " the frame - pack rolling " technology can increase the densify, avoid cracking during rolling, and effectively improve the deformability and mechanical properties of the spray deposited porous aluminum alloy sheets

    結果表明：外框限制軋制工藝提高了噴射沉積多孔材料的緻密度，避免了軋制過程中裂紋的形成，有效地改善了噴射沉積板坯的軋制性能及材料的力學性能。
  3. The failure of evaporate - self vessel was analyzed by means of chemical composition analysis, mechanical property testing, ctod determination, micrographic and sem inspection

    摘要採用化學成分分析、力學性能試驗、宏微觀檢驗等方法對自蒸發器材質和裂紋成因進行了分析。
  4. Because the propellant grain is viscoelastic material, the liner and adiabatic layer are also viscoelastic one, the interface debond problem is actually interface crack about elastic - viscoelastic or bi - viscoelastic materials. research about this problem relates to the knowledge of viscoelastic mechanics and interface fracture and combustion. numerical analysis method about interface debond on solid rocket motor is researched in this paper

    由於固體火箭發動機的推進劑藥柱是一種粘彈性材料，襯層和絕熱層也具有粘彈性性質，因此其界面脫粘問題實際上是彈性-粘彈性或雙粘彈性各向同性材料界面裂紋問題，對該問題的研究涉及到粘彈性力學、界面斷裂力學和燃燒學等相關學科。
  5. Non - linear dynamics characters of a rotor system for an elastic shaft - disk with a crack are examined by introducing the geometric non - linearity and equivalent line - spring model

    本文引入了幾何非線性關系和等效線彈簧模型對含裂紋的彈性軸彈性盤轉子系統進行非線性動力學分析。
  6. This paper aims at the characteristics of thermal response of lpg vesse1 under high temperatue, conjoining the project of " study on transportation safety early - wdring system of lpg dangerous goods " supported by transportation departinen of china and the project of " mechanism study and numerical simulation of the explosion of lpg vessel " supported by science foundation of hubei province. the interdisciplinary research has been done among temperature field distribution of lpg vessel under flame surroundings, intensity calculation, crack propagation predication and mechanism of explosive accident, etc. three parts are analyzed and discussed

    本文針對高溫環境下液化氣壓力容器的熱響應特性問題，結合交通部重點科技項目「液化氣體類危險品運輸安全預警系統的研究」和湖北省自然科學基金項目「液化氣容器爆炸機理研究及數值模擬」 ，對在火焰包圍下的液化氣壓力容器的溫度場分佈、強度計算、裂紋擴展預測以及爆炸事故機理等方面開展了多學科的交叉研究。
  7. The main results and academic contributions of the dissertation can be summarized as following : 1 ) for the difficulty to obtain the accurate analytical solution of the stress constraints around 3d cracks, detailed 3d fe analyses have been conducted to study the out - of - plane constraint factor tz around a straight through - thickness crack, a quarter - elliptical corner crack and a semi - elliptical crack embedded in an isotropic elastic plate subjected to uniform remote tension loading. the distributions of tz are minutely studied in the forward section of the cracks. strong 3d zones ( tz > 0 ) along the crack front were investigated despite the far field stress - free boundary conditions

    全文主要研究內容和學術貢獻如下: 1 .針對一般三維裂紋端部場應力約束準確解析的困難，對均勻拉伸載荷作用下各向同性彈性板中穿透厚度中心直裂紋、半橢圓表面裂紋和1 / 4橢圓角裂紋進行了大量詳細的全場應力三維有限元分析，首次全面分析了非穿透裂紋端部場三維影響區范圍，給出了不同形狀三維裂紋前沿離面應力約束因子tz的數值解，並結合k場平面解給出了非穿透裂紋端部應力場k - tz雙參數描述。
  8. Furthermore, the supposition of galvanic couple is drawn into the procedure of corrosion fatigue crack growth of aluminum alloys, the relation of couple current vs loading time is determined with electrochemical methods. a formula in the theory is deduced which expresses the stress corrosion crack growth rate of lc4cs aluminum alloy, the results of mathematical modeling preferably correspond with examination

    再將「耦合作用」的猜想，引入鋁合金的腐蝕疲勞裂紋擴展過程中，用電化學的方法測定耦合電流與加載時間的關系，並從理論上導出lc4cs鋁合金應力腐蝕裂紋擴展速率的數學表達式，數學模擬的結果與實驗值具有較好的一致性。
  9. This paper mainly aims at the strategic demands for large - aperture lightweight mirror proposed by high - tech development. its main research contents are : select material blank for lightweight mirror according to physical and chemical properties of optical glass ; analyze and calculate the deformation quantity of the mirror with finite element method ; design and optimize mirror body structure of 400 lightweight plane mirror and 450 lightweight spherical mirror, analyze glass cutting principle, design specisl - use grinding wheel structure, select reasonable technological parameters to implement the processing of weight reduction holes on 400 plane mirror ; analyze etching mechanism of hydrofluoric acid, look for the technological parameters such as the optimal acid concentration and etching time etc. ; eliminate the stress of weight reduction holes and micro - cracks on 400 lightweight plane mirror ; discuss the processing principle and

    本論文的研究主要是瞄準國家高技術對大口徑輕型鏡的戰略需求而開展的。主要研究內容是：根據光學玻璃的物理與化學性能，選擇輕型鏡坯材料；用有限元法對鏡子的變形進行分析、計算，找出變形規律，優化設計400mm輕型平面鏡、 450mm輕型球面鏡鏡體結構；分析玻璃切削原理，設計專用磨輪結構，選擇合理工藝技術參數，完成400mm平面鏡輕量化減重孔的加工；分析氫氟酸腐蝕光學玻璃機理，尋找最佳酸濃度、腐蝕作用時間等工藝參數，實現400mm平面鏡減重孔應力與微裂紋的消除；討論分離器加工原理和工藝技術特點，完成400mm平面輕型鏡面形加工。
  10. With the adoption of the rate - sensitive constitutive relationship, it is asymptotically investigated the propagating tip fields of antiplane mode iii crack under the condition of incompressibility, and the dynamics equations are obtained separately governing the stress and strain fields at the crack - tip

    採用這種率敏感型本構關系，本文對不可壓縮條件下反平面型擴展裂紋的尖端場進行了漸近分析，分別求得了其裂紋尖端應力和應變場的動力學控制方程。
  11. Rubber components often appear interface failure due to the actions of mechanical loads and the influences of enviorment. hence, in this paper the interface failure mechanism has been studied by means of finite element method and fracture machinics. the numerical results of testpieces deformation with crack are in close agreement with experimental values

    橡膠鋼雙材料試件由於機械載荷和環境的影響經常在粘接界面發生破壞而導致結構失效，藉助有限元和斷裂力學對界面破壞機理進行研究，得到的存在初始裂紋的試件變形與實驗結果吻合較好。
  12. The analysis of cracking in steel bridges can usually be accomplished by using linearelastic fracture mechanics.

    通常可用線彈性斷裂力學進行鋼橋裂紋分析。
  13. Fracture mechanics can be used to determine the conditions in which a rapidly propagating crack can be arrested.

    斷裂力學可用來確定製止裂紋快速擴展的條件。
  14. Geological material, no matter soil or rocks, has the characteristic, such as crystal grain structures, pores or micro - cracks etc., on micro - scale and usually contains fluid or gas in pores and micro - cracks. so the problems about geological material are really the problem of the interaction between the fluid, solid and gas

    地質材料，不論是土還是巖石，在微觀結構上都具有晶粒結構、孔隙、微裂紋等特徵，並且在孔隙或微裂紋中還往往含有流體或氣體，因此地質材料的力學問題往往是液體、固體以及氣體間相互作用的問題。
  15. The following conclusions are gained : ( 1 ) the located shear band prongs the ligament near the top crack tip and the structure may occur shear - mode fracture at the angle of 155 ? to crack when load is 87. 92mpa ; the mode of fracture of the flange joint structure is not possible to be void - mode ; ( 2 ) it is proved that loading and then unloading repeatedly can not increase the possibility of invalidation of the structure when the times of loading and unloading are not too more when load is operating pressure ; the structure is safe when the vessel is operating ; ( 3 ) in the fe model of the thesis, not considering the influence of water pressure test which is in the process of fabrication of vessel in fe results in larger deviation in analysi

    得出了以下結論：在8792mpa的載荷下筒體一封頭連接結構處的集中剪切帶貫穿韌帶，可能發生沿與原裂紋線成155 「角方向剪切型斷裂；筒體一封頭連接結構不可能發生韌窩型斷裂； （ 2 ）在工作壓力下進行次數不多的反復加、卸載，結構不會破壞，也不會喪失安定性：結構在工作狀態下是安全的； m在本文的彈塑性有限元模擬計算中，對于裂紋尖端進行力學分析時，不考慮壓力容器製造過程中水壓試驗的影響，將導致計算結果出現較大的偏差； （ 4 ）筒體完全屈服時的載荷為92石3mpa ，封頭完全屈服時載荷為86
  16. In the view o6f micro mechanics and fracture mechanics, the mechanism of crack generation of mass concrete is expatiated, thermal stress on the interface between aggregate and cement paste of concrete and crack forming and developing is analyzed and the disciplinarian crack developing with temperature is given

    本文從微觀力學和斷裂力學的角度，探討了混凝土結構開裂機理，分析了溫變過程中混凝土骨料與水泥砂漿界面上的溫度應力以及界面裂紋的萌生和擴展，給出了裂縫隨溫度變化的擴展規律。
  17. With the very low water to cement ratio, rpc has ultra - high strength high ductility and low permeability. in this paper, the compressive strength of rpc can reach to a high point with the number approximately 135mpa. as illustrated from the study results, we can approve some fundamental conclusions : there are big effects on rpc with deferent kinds and properties of raw materials and deferent curing conditions ; stress - strain curve shows the process of destroy with rpc samples ; x - ray diffraction analysis indicates that heat treatment at temperatures 90 accelerate the hydration of rpc sharply, therefore, mechanical and microstructural properties of rpc are highly dependent on heat treatment ; it is believed that rpc materials have excellent resistance to chloride permeability ; during the heat treatment, the shrinkage of rpc developed quickly because of chemical reactions ; the rpc with slag mostly has the advantage of rpc without slag about resistance to solutions corrosion

    研究結果表明：通過對rpc各組分摻量變化的研究，可以找到rpc的最優配合比；試件成型后的熱養護制度對rpc的性能影響巨大； rpc的抗壓應力?應變曲線可以反映出試件受破壞時微裂紋的擴展情況，剛纖維的摻入可以大幅改善rpc的韌性； rpc在成型后存在較大的收縮，而其中的化學收縮要遠遠大於乾燥收縮； rpc具有很強的抗氯離子滲透性能，漿體的密實度很高；通過x射線衍射實驗，可以發現rpc的膠凝體中ch晶體已經幾乎不存在，膠凝體主要由c - s - h凝膠和未水化水泥顆粒組成；在抗溶液侵蝕的實驗中，摻礦渣rpc的抗溶液侵蝕性能在絕大多數情況下要好於不摻礦渣試件，酸、堿溶液和浙江工業大學碩士學位論文摘要一些鹽溶液都會對rpc的結構產生侵蝕作用，但是機理各有不同。
  18. Using the complex potential method in the plane theory of elasticity of an anisotropic body, a series solution to the stress field of a finite plate containing multiple cracks subjected to arbitrary loads is obtained by means of the faber series expansion, and the stress intensity factors at the crack tips are calculated based on the theories of fracture mechanics. equivalence yield stress is introduced in order to consider the effects of the plastic zones, with which the strip yield criteria is developed in the article so that the effects of structural size and the crack interactions on the stress distribution can be considered accurately. the effects of plate size, crack size and crack distributions on the stress intensity factors as well as the residual strength of the plate are studied detailedly

    採用各向異性體平面彈性理論中的復勢方法，以faber級數為工具，得到了含多裂紋有限大板在任意載荷作用下應力場的級數解，並應用斷裂力學方法確定裂紋尖端的應力強度因子；引入當量屈服應力考慮裂尖塑性區的影響，提出基於帶屈服準則的剩餘強度分析模型，能夠充分考慮結構尺寸和裂紋之間相互作用對應力場的影響；通過數值計算詳細討論了結構尺寸和裂紋之間位置關系對應力強度因子和結構剩餘強度的影響規律，得到了一系列對工程應用具有實用價值的結論。
  19. In this paper, the author applied bp algorithm in this subsystem, and a model of crack detection of glass bottle is described. this model enables the detection system to enhance the capabilities of auto - learning and auto - adapting greatly by overcoming the weakness of the worse adaptability of adapting the change of the environment and the worse tolerance to mistakes of the new information

    本論文將bp演算法應用於該子系統中，建立了基於bp神經網路的「玻璃瓶口裂紋檢測模型」 ，克服了原演算法對環境變化適應的靈活性和對新信息的容錯性較差的弱點，從而使該檢測系統的自學習、自適應能力大大增強了。
  20. A state - of - art review of several branches of fracture, which are related to the dissertation, are presented, including macroscopic - microcosmic fracture mechanics, fracture dynamic mechanics, 3d crack problem etc. the crack technique, which is the basis and application of controllable regular fracture, are also reviewed concisely but thoroughly

    回顧了目前斷裂力學研究中與本文主題相關幾個方面的國內外研究現狀，包括宏微觀斷裂力學、斷裂動力學以及三維裂紋問題等。對于可控規則斷裂產生的基礎和主要應用對象的裂紋技術，給出了簡要但全面的介紹。
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