熱塑性變形 的英文怎麼說
中文拼音 [rèsùxìngbiànxíng]
熱塑性變形
英文
thermoplastic deformation-
The simulations of the blank forming process is always a very pop question in the domain of plasticity forming. it has very important significance as to making certain the figure of the blank roughcast calculating strain and stress, establishing reasonable forming craft and designing mold
板料成形過程模擬一直是塑性成形領域研究的熱點問題,對于確定板料毛坯形狀、計算應力、應變分佈、制訂合理的成形工藝和模具設計有重要的意義。From the feature of the force and deformation of the tpih, 5 different elements are used to mesh the different zones of the tube, which are structural beam 3d elastic 4, structural pipe plastic straight 20, structural pipe elastic elbow 18, structural shell elastic 4 node 63 and contact 3d pt - to - surf 49 ; the contact problem is assumed to be flexible - to - flexible ; the temperature field is assumed to be body load. a mechanical model corresponding to reality has been established for numerical simulation. based on the above, the 3 - d fem numerical simulation of tpih has been carried out by using the ansys program
針對加熱彎管過程的受力和變形特點,採用三維梁單元、三維塑性直管單元、三維彈性曲管單元、三維殼單元與三維點對面接觸單元等5種不同的單元分別對管毛坯不同區域進行劃分,並對接觸單元採用柔體-柔體的處理方法,將溫度場作為體載荷處理,建立了符合實際的加熱彎管問題數值模擬力學模型:在此基礎上,應用商用軟體ansys對加熱彎管過程進行三維有限元模擬與研究,獲得了成形時推力、彎矩、支撐力大小及其變化趨勢。With the focus on the structure and components character of plate metal / ceramics graded coating, this paper extends and improves the thermal elastoplastic analysis model of trilayered materials derived by suresh et al and builds the theoretical model of thermal elastoplastic stresses analysis of plate metal / ceramics graded coating, and this paper also analyzes the thermal elastoplastic stresses and deformation of metal / ceramics graded coating
本文針對平板狀金屬陶瓷梯度塗層的結構和組成特徵,推廣和完善了suresh等人的三疊層材料的熱彈塑性分析模型,建立了平板狀金屬陶瓷梯度塗層熱彈塑性應力分析的理論模型,對金屬陶瓷梯度塗層的熱彈塑性應力和熱彈塑性變形進行了分析。This paper firstly extends the thermal elastoplastic deformation theory of trilayered materials derived by suresh et al and abolishes the restrictive assumption to the monodirectional spread of plastic zone in the original model and the thermal elastoplastic analysis model which reflects the complete history of thermal elastoplastic deformation of the multilayered materials is built. this model can be also applied to the condition of the spread of plastic zones from both sides of plastic layers and has more applicability compared to suresh et al ' s model
論文首先推廣了suresh等人建立的三疊層材料熱彈塑性變形理論,取消了原理論模型中塑性區域單向擴展的限制性假設,建立了反映疊層材料完整熱彈塑性變形歷史的熱彈塑性行為分析模型,該模型同時適用於塑性層的塑性區域雙邊擴展的情況,較suresh等人的模型適用性更為廣泛。Flame tube in aircraft engine undergoes high temperature and high speed airflow washing. a hypothesis was suggested, which takes the transient heat transferring as the main reason to the cracking and damage on flame tube. finite element method was adopted to simulate the thermal fatigue and the hypothesis was reproduced
發動機火焰筒的熱疲勞損傷是導致火焰筒失效的主要原因,本文提出了一種火焰筒熱疲勞損傷假設,認為火焰筒熱疲勞損傷不是由於發動機的運行和停車時冷熱溫度循環造成的,而是發動機啟動時瞬態溫度傳導過程中材料循環塑性變形的結果,利用該假設結合有限元計算模擬了火焰筒產生疲勞損傷的原因。During the temperature fields, the results indicate that the processing parameters such as the extrusion velocity, casting temperature, perform preheating temperature, die preheating temperature and so on are important for the temperature fields besides the dwell time. they are must be in concordance each other to the deforming zone is in the quasi - solid state, and the stable semi - solid extrusion is implemented. during the deforming fields, the hyperbolic sine thermo - rigid - viscoplastic fem model is selected according to the forming feature of the process, and the variations of the stress - strain fields are studied
在溫度場的模擬中,模擬結果表明,保壓時間是影響製件成形質量的關鍵因素之一,擠壓速度、液態金屬澆注溫度、預制體預熱溫度和模具預熱溫度等工藝參數對溫度場的影響也很大,需進行參數之間的協調,只有當變形區內部始終維持準固態時,才能實現穩定的液-固擠壓成形過程;在變形場的模擬中,根據液態浸滲擠壓的成形特徵,選用了雙曲正弦剛-粘塑性有限元計算模型,研究了變形過程中應力應變場的變化規律,研究了模角對變形和金屬流動的影響及變形力的變化過程和其影響因素。Flame rectification : flame rectification is using plasticity rectification of some parts which is caused by heating of flame to make the metal contraction after cooling, by which the purpose of recitification can achieved
火焰加熱矯正法:火焰加熱矯正法是利用火焰局部加熱時產生的塑性變形,使較長的金屬在冷卻后收縮,以達到矯正的目的。Flame rectification : flame rectification is using plasticity rectification of some parts which is caused by heating of flame to make the metal contraction after cooling, by which the purpose of recitification can be achieved
火焰加熱矯正法:火焰加熱矯正法是利用火焰局部加熱時產生的塑性變形,使較長的金屬在冷卻后收縮,以達到矯正的目的。Based on thermodynamics laws, inner - variable theory and analysis of conventional tn - axial tests data and breakage characteristics of loess, this paper proposed that the loess would produce elastic, plastic and nonreversible damage deformation during loading
從熱力學定律和內變量理論出發,在對常規三軸試驗數據和土樣的破壞特性分析的基礎上,認為土體在受力過程中將產生彈性變形、塑性變形和不可逆損傷變形。The flow stress model of 35crmo structural steel during hot forming
結構鋼熱塑性變形流動應力模型Testing of engineering ceramics - thermo - mechanical properties - methods for determination of pyroplastic deformation sagging
工程陶瓷的試驗.熱機性能.熱塑性變形的測定方法With improvement of material composition and processing, the failure modes demonstrate predominately elevated wear and plastic deformation, and no earlier failure occurred, leading to a considerable improvement of service life and a stable number of 6000 ~ 7000 times, 80 % more than forging steel dies
經改進材質及工藝后,熱磨損、塑性變形為主要失效形式,而未出現早期斷裂失效,壽命得到明顯提高,穩定在6000 ~ 7000件,高於鍛造模具鋼80 %以上。The deformation behaviors and evolution behaviors of the microstructure for the new 7055 aluminum alloy at high temperatures have been investigated by isothermal compression testing method with gleeble - 1500 thermal simulator
本文利用gleeble - 1500熱力模擬試驗機,採用高溫等溫壓縮試驗方法,對7055新型超硬鋁合金的高溫塑性變形流變應力行為及組織演變行為進行了研究。For xlpe insulated power cable, either chemical method or physical method is employed to transform the molecular structure of pe from chain into three - dimensional network, i. e. thermoplastic pe is transformed into thermosetting xlpe. after cross - linking, the thermal and mechanical properties of pe have been greatly improved while its excellent electrical property are still retained
交聯聚乙烯絕緣電力電纜是採用化學方法或物理方法,使聚乙烯分子由線形分子結構轉變為三維網狀結構,由熱塑性的聚乙烯變成熱固性的交聯聚乙烯,從而提高了聚乙烯的耐老化性能、機械性能和耐環境能力,並保持了優良的電氣性能。The effect of plastic deformation and elastic strain energy induced by pre - strain on the nucleation of martensitic transformation of low alloy ultra - strength steel sosimncrmov had been studied by pre - strain quenching in austenite state. the control over deformation magnitude and deformation temperate as well as loading pattern was performed to adjust the storage of elastic strain energy in steel before martensitic transformation, using the type of geeble - 1500 thermal analogue test machine
使用gleeble - 1500型熱模擬機,對低合金超高強度鋼30simncrmov實施奧氏體預應變淬火處理,通過控制形變量、形變溫度和加載方式,調整鋼中馬氏體相變前的彈性應變能儲備,研究了預應變所造成的塑性變形與彈性應變能對馬氏體相變的影響。The relief of some of the internal strain energy of a previously cold - worked metal, usually by heat treatment
冷塑性變形金屬釋放其部分應變能的過程叫回復,通常採用熱處理的方法。The formation of a new set of strain - free grains within a previously cold - worked material ; normally an annealing heat treatment is necessary
在冷塑性變形材料的內部生成等軸狀新晶粒的過程叫再結晶,通常發生於再結晶退火熱處理過程中。With this paper ' s study, we can understand the history of thermal elastoplastic deformation and thermal stresses of graded coating more deeply. this paper builds a model which can better describes the thermal elastoplasticity of metal / ceramics graded coating and multilayered materials, and it builds the theoretical basis for the optimized design and thermal elastoplasticity analysis of metal / ceramics graded coating and multilayered materials. the research of this paper has important guidance significance to the engineering application of the graded coating
通過本文的研究,更深入地了解了梯度塗層的熱應力和熱彈塑性變形歷史,建立了可以更好地描述金屬陶瓷梯度塗層和疊層材料熱彈塑性行為的分析模型,為金屬陶瓷梯度塗層和疊層材料的熱彈塑性行為分析和優化設計奠定了理論基礎,對梯度塗層的工程應用有重要的指導意義。Plastics piping and ducting systems - injection - moulded thermoplastics fittings for pressure piping systems - test method for maximum deformation by crushing
塑料管和管道系統.壓力管道系統的注射鑄造熱塑性部件.最大擠壓變形試驗方法Rubber, vulcanized or thermoplastic - determination of stress - strain properties at low deformation
硫化或熱塑性橡膠.低變形條件下應力-應變性能的測定分享友人