plastic distortion 中文意思是什麼

plastic distortion 解釋
塑性變形
  • plastic : adj 1 造型的；塑造的；給與形態的。2 可塑的，塑性的，受范的；柔軟的；〈比喻〉溫順的，肯聽話的。3 ...
  • distortion : n. 1. 歪扭，扭曲。2. 【電學】（信號、波形等的）失真；【物理學】（透鏡成像產生的）畸變；【醫學】扭轉，變形。3. 竄改，歪曲，曲解。adj. -al
  1. It is one of mechanisms of plastic distortion, at the same time it is also the beginning of microcosmic damage and rupture before the macroscopical destroying of materials, it representatives a mid - state between materials " macroscopical rupture and bend, it is considered a premonitor that the rupture of polymer material

    它是材料塑性變形的機制之一，同時又是材料宏觀破壞以前微觀上損傷、破壞的開始，它代表材料微觀斷裂和屈服之間的一個中間狀態，可以看作是聚合物材料宏觀斷裂的先兆。
  2. In actual engineering problems such as metal forming, structure crashworthiness et al., there are a great number of interface problems with elasto - plastic large deformation. when such large deformation or distortion is solved by finite element method, it must remesh process must be developed to get the less accurate numerical result

    在金屬成型、結構碰撞、穿甲等工程領域存在大量的彈塑性大變形接觸問題，用有限元法模擬這些過程時，由於變形畸變的存在，往往需要採用網格重劃分才能得到較為準確的計算結果。
  3. The paper validates and perfects the traditional wear theory by using the ferrography, at the same time, combining the practice, mechanical embedded minor particles, scoring, plastic distortion, shaping effect and fatigue effect are analyzed and the results show that the vehicle ' s malfunction can be predicted

    文章作者將鐵譜磨粒分析技術運用在汽車維修行業，驗證和完善了傳統磨損理論，並結合實踐，對微凸體機械嵌合、膠合，塑料變形及刨削作用和疲勞作用進行了分析，證明汽車機械故障可以預測，且可以防止重大事故的發生。
  4. Aiming at the defects of the imc - 70 model stubble - plastic film residue collector that the draft is rather great and the plastic residue or stubble are sometimes left out in the operation process, formulas for the principal parameters of the knives have been driven out based on the analysis of the distribution manner in the field of the stubble and plastic film residue, the variation range and the variation tendency of the principal parameters for the reduction of the draft have been found on a trial basis in the corn field through theoretical analysis and experimental study and a mathematical model for the draft applied on the knives has been established in accordance with the movement and distortion of the soil under the action of the knives

    本文針對1mc ? 70型地膜回收起茬機起膜、起茬鏟刀在作業中阻力大，殘膜、根茬有漏起的現象，通過對作物收獲后殘膜、根茬在田間分佈情況的分析，推導出鏟刀滿足生產要求主要參數的求取方法和公式，並經理論分析和試驗研究，確定了鏟刀對玉米茬地進行起膜、起茬時主要參數的取值范圍和減小牽引阻力各參數的取值規律。以鏟刀作用下土壤的運動變形為基礎，建立了鏟刀牽引阻力模型。
  5. Author thinks that the direction of the maximum plastic distortion along a constant radius around the crack tip may be considered as the direction of shear - mode fracture ( named pmax - criterion ) and the load when located shear band prongs the ligament in the front of crack tip is regarded as the limited load of shear - mode fracture. ( 3 ) the fad ( fracture assessment diagram ) of titled crack is proposed based on achievements of mesomechanics about i - ii complex ductile fracture of metal, and the titled crack is classified two kinds : void - mode fracture is assessed by fracture assessment curve, and shear - mode fracture by limited load. ( 4 ) using a fe program based on plantle - ressue theory to calculate some mesomechanical parameters, a flange joint structure of a high pressure vessel ( design pressure 31. 4mpa and the thickness of the hemispherical head is half of that of shell. ) is analyzed to determine whether the structure under operation pressure is safe or not, forecast the mode of potential invalidation and argue for the rationality of design of the structure

    試件的整體斷裂為剪切型，但在試件芯部裂尖鈍化區中部出現了韌窩型啟裂並有一定的擴展，說明局部較高的應力三軸度也會使韌窩型機制得以發展，但是不改變試件整體的剪切型斷裂模式；對韌性斷裂的剪切模式的細觀機理做了一定的探討，並且提出了含裂紋構件剪切型斷裂的宏觀判據：認為裂紋前方的集中剪切帶中與裂紋尖端等半徑處最大有效塑性應變出現的方向可以作為裂紋剪切斷裂的方向（可簡稱為_ （ pmax ）準則） ，集中剪切滑移帶貫穿裂紋前方承載韌帶時的載荷可以作為極限載荷；本文運用金屬韌性斷裂細觀力學在一復合型韌性斷裂方面的研究成果，採用失效評定圖的形式，提出了傾斜裂紋的安全性評定方法的基本框架。
  6. By using finite element simulation method and plastic distortion theory, the author analyzes the principle of the stretch bending forming and builds finite element model of rotary stretch bending

    本文採用有限元模擬的方法，結合金屬成形的塑性變形理論，深入分析了拉彎的成形機理，建立了用於轉臺式拉彎成形模擬的有限元模型。
  7. Thirdly, a calculation formula of distortion settlement is established by considering soil structure damage and plastic drain board restraining displacement of soft foundation. starting with discussing the main factors affecting settlement of consolidated foundation, a reasonable method to modify the calculated settlement of soft foundation by layer - wise summation method is presented here. with calculable coefficients of volume deformation, lateral displacement and structure damage to modify the settlement will be closed to measurer settlement

    （ ）在土體損傷理論的基礎上建立了考慮結構損傷、排水板加筋作用的瞬時沉降計算公式，分析了影響土體沉降的主要因素，提出了對按單向分層總和法計算的固結沉降量進行體積應變、側向位移、土體結構損傷三項修正的方法，以上述三個修正系數取代原來單一的綜合經驗系數，使沉降計算值與實測值更接近。
  8. Finally, the technic route for the research of milling distortion is proposed. in chapter 4, the effect of tool path and clamping schemes on residual stresses as well as machining distortion are analyzed by using three - dimensional elastic - plastic fem ( finite element method ). the distortion variation tendency under four typical tool paths, the pressing - plate clamping and stretched fixation is obtained respectively

    第四章基於上述理論基礎，利用三維彈塑性有限元技術分析了走刀路徑和裝夾方案對銑削加工殘余應力分佈和變形的影響，得到了四種典型的走刀路徑以及壓板式裝夾和拉伸裝夾對加工變形的影響趨勢。
  9. You can choose the mode that switch inside the bushing. it can compensate the subsided distortion and makes the gas pipeline being all plastic

    在鋼塑轉換施工方案技術的選擇上，一般可選用套管內轉換方式，既可抗拒一定的沉降變形，又可實現管網的全塑化。
  10. The research work of the thesis include mainly : ( 1 ) observe a phenomenon which the two fracture modes are simultaneously found near crack tip of a four - point - bend specimen when the ratio of m / q is close to 3. 0mm, criteria m / q, when the fracture mode of four - point - bend specimen transits from void - mode to shear - mode. intensely location plastic distortion is observed in the front of crack tip and the macro - fracture of the specimen with the same m / q belongs to shear - mode fracture

    本文主要在以下幾個方面取得了一定的進展：通過四點彎試件的斷口和切片試驗，觀察到裂紋尖端同時存在兩種斷裂機制? ?在兩種斷裂模式相互轉化的臨界狀態附近，裂紋前方既有鈍化和延伸區中的空穴形核擴張，又有銳化角前劇烈的集中剪切變形。
  11. It is one of mechanisms of plastic distortion, at the same time it is also the beginning of microcosmic damage and rupture before the macroscopical destroying of materials, it representatives a mid - state between materials " macroscopical rupture and bend, it is considered a premonitory that the rupture of polymer material, which get common attention by scholar inside and outside nation. therefore, the research for engineering polymer in mechanic action of non - linearity destroy such as distortion, destroy and depe nd on time and temperature is valuable in theoretic research and actual application, which offer the important theoretic gist for changing complex material ' s capability and actualize polymer ' s perfect application with high quality of capability in engineering

    同時，銀紋化和銀紋損傷是高聚物特有的一種現象，細觀層次的銀紋引發、生長和斷裂在聚合物損傷斷裂的整個過程中起著承前啟后的作用，它是溝通宏、微觀變形機制的橋梁，是材料塑性變形的機制之一，同時又是材料宏觀破壞以前微觀上損傷、破壞的開始，它代表材料微觀斷裂和屈服之間的一個中間狀態，可以看作是聚合物材料宏觀斷裂的先兆，受到國內外學者們的廣泛關注。因此，開展工程聚合物變形、破壞以及時間相依和溫度依賴性等非線性力學行為研究，探討聚合物破壞過程中的非線性力學行為，為聚合物及其復合材料的改性、實現聚合物的工程化與高性能化提供重要的理論依據，具有重要的理論研究意義和實際應用價值。
分享友人
分享到 Line

分享到臉書