無塑性轉變 的英文怎麼說
中文拼音 [wúsùxìngzhuǎnbiàn]
無塑性轉變
英文
nil ductility transition-
The study in the paper starts with beam distortions, and it treats the plastic deformation area as pure bending sect, rest of the beam as rigid bodies. according to different shapes of the external tendons, it divides into three structural forms familiar in projects, that is the beams with no deviator, with a deviator and with two deviators, and studies the relation between the deformation of the external prestressing tendons and that of the beams, and derives the formulas of the ultimate stress increment of external tendons. in the formulas, the ultimate angle corresponding to half of the plastic deformation area is considered as a variable parameter
本文首先從梁極限狀態下的變形入手，將塑性鉸區看作純彎段，將塑性鉸以外的區域看作剛體，按照體外預應力筋的形狀不同，分工程中最常見的三種體外結構形式，即無轉向塊的直線型體外筋混凝土梁、具有一個轉向塊的單折線型梁和具有兩個轉向塊的雙折線型梁，研究體外預應力筋變形和梁體的變形間的關系，推導出以極限狀態下塑性鉸區之半對應的轉角為參數的計算體外預應力混凝土簡支梁以及連續梁的體外筋應力增量計算公式，並進一步求得梁的極限承載力。Standard method for conducting drop weight test to determine nil ductility transition temperature of ferritic steels
鐵素體鋼的無塑性轉變溫度落錘試驗方法Standard method for conducting drop - weight test to determine nilductility transition temperature of ferritic steels
鐵素體鋼的無塑性轉變溫度落錘試驗方法Abstract : based on the result of visioplasticity test, the law of tube central upsetting was created, and the calculated method of displacement field and strain field were obtained. in this study, the four deformation modes were showed when ratio of height to thickness of tubular billet is greater than 3. the four modes were related to the distribution of strainless - plane
文摘:根據管坯視塑性實驗法的實驗結果，分析了無芯軸支撐條件下，管坯中部鐓鍛的變形規律，闡述了變形區位移場、應變場的計算方法；通過對實驗結果的分析，得出了當鐓粗比3 ，管坯中部鐓鍛時，內壁呈現四種典型的變形模式；論述了分流面的分佈與四種變形模式之間的轉化關系。In this paper, molecular dynamics simulation is carried on the nanometric cutting of defect - free monocrystalline silicon. based on simulations, a reasonable explanation is given to the forming mechanism of chip and surface machined in the cutting process of monocrystalline silicon. moreover, the feasibility of brittle - ductile transition of monocrystalline silion is studied with the method of first principle stress
對內部無缺陷的單晶硅的納米切削過程進行了分子動力學模擬.通過模擬結果，對單晶硅納米切削中的切屑形成過程和加工表面的形成過程做出了合理的解釋.並用第一原理應力計算方法對單晶硅納米切削過程中的脆塑轉變的可行性進行了研究分享友人