鬆弛模量 的英文怎麼說
中文拼音 [sōngchímóliáng]
鬆弛模量
英文
relaxation modulus-
So we say that we can absolutely avoid unnecessary and bothering process in mathematic deducibility if making full use of the method of pseudo - spectral in more complex viscoelastic media, we can get wave equation when directly replacing with two kinds of relaxation modules
由此可以說,如果採用偽譜法模擬其它更復雜的粘彈介質模型時,完全可以避免不必要的而且煩雜的數學推導過程;直接將體積鬆弛模量和剪切鬆弛模量代入即可得其波動方程。Calculation of low - temperature relaxed modulus of elasticity for bitumen via creep test
基於蠕變試驗計算瀝青的低溫鬆弛彈性模量Light conveyor belts - method of test for the determination of the relaxed elastic modulus
輕質傳送帶.鬆弛彈性模量的測定用試驗方法Abstract : in this paper, we propose an improved lagrangian relaxation algorithm to solve job - shop scheduling problems. besides the addition of augmented objective, we expand the search scope of near - optimal solutions and improve the computational efficiency greatly by restricting the solution scope of sub - problems and modifying the search method of dual problem. at the same time, we develop a genetic algorithm combining with the lr ( lagrangian relaxation ) method. using the numerous useful solutions we get in the lagrangian relaxation as the original genes, we can improve the solution further. test results show that these methods achieve satisfied outcome for job - shop problems. they can also be applyed to other programming problems with constraints
文摘:針對車間調度問題,提出了一種改進的拉氏鬆弛演算法.在增加輔助目標函數的基礎上,通過對子問題的限制和搜索策略的改變,使拉氏演算法的計算量減少,近優解的搜索能力有很大改善.本文還提出了一種基因優化演算法,充分利用拉氏演算法得到的多個近優解,進一步優化結果.模擬結果表明對車間調度問題得到了較好的結果.本方法也可用於其它有約束的規劃問題Through the stress relaxation test we can get relaxation modulus under various strain, and it indicate that the relaxation modulus of asphalt concrete specimen will turn minish along with the augment of the strain. which is to say the relaxation will be better if the strain is small
通過鬆弛試驗得到的不同應變條件下的鬆弛模量曲線表明,所加的應變越大,瀝青混凝土試件的鬆弛模量越小;也就是說,所加應變越小,其鬆弛性能越好。Using an l2 energy method proves that the solutions of the general initial - boundary problem to this relaxation model converges time - asymptotically to a stationary wave or a rarefaction wave or superposition of these two kinds wave for small perturbation
對此鬆弛模型,用l ~ 2 ?能量方法證明了在小擾動的情形下,相應的一般初邊值問題的解漸近收斂到一個穩定波或一個稀疏波或這兩種非線性波的疊加。To obtain the parameters of measuring magnetic circuit structure, theory research is done. theory research based on overrelaxation : according to electromagnetic theory fundamental equation, boundary condition is analyzed, iterative formula is deduced, overrelaxation factor is selected and calculation program is composed
並根據麥克斯韋電磁場基本理論建立了磁路結構模型,使用超鬆弛迭代法對測量磁路結構的磁場進行了理論分析,得到了適于用在行程傳感液壓缸行程測量的磁路參數之間的關系。Considering the characteristics of internal force and structures of simply supported pc bridges, a novel automatically step - up method ( asum ), taking into account the influence of steel arrangement, steel ratio, stress losses of tendons and time - dependent concrete modulus, to analyze creep and shrinkage effects is presented. this method accepts all kinds of expressions of creep and shrinkage, and it is easy to calculate total stress, strain of concrete and steel and deflection of bridge at any time, the expected prediction accuracy will be obtained by further dividing the time - step within duration
首先,針對預應力混凝土簡支梁橋的受力特徵和構造特點,提出了徐變效應分析的全量形式自動遞進法,可考慮截面上鋼筋位置、配筋率、預應力鋼筋鬆弛、混凝土彈性模量隨時間變化等影響,且計算式可適用於任何形式的收縮、徐變特性表達式;建立的公式可方便地求解任意時刻混凝土、鋼筋的應力與應變和跨中梁體的豎向變形,計算精度可方便地通過計算時段的細分來控制,直至給出滿意的結果。The emm takes the rigidity effect as the relaxation effect, which is main reason leads to largely underestimation of the restraining stress
等效模量法代這種剛化效應為有利的鬆弛效應,是造成它大大低估約束應力的主要原因。The developments of restraining stress, creep behavior and elastic modulus in concrete were measured under different restraint degrees by uniaxial restrained shrinkage tea, and the influence of restraint degree on evaluation of cracking sensitivity in early concrete was alto discussed
採用了單軸約束試驗方法,分析了不同約束程度下混凝土約束應力、鬆弛性質和彈性模量的發展,並討論了約束程度對早期開裂敏感性評價的影響。Abstract : based on the theory of thermoviscoelaticity of relation [ 1 ] and creep [ 2 ] constitutive equations under non - constant temperature, the conversion relation between relaxation and creep under non - constant temperature states is developed, and a example of conversion is given
文摘:基於變溫粘彈性鬆弛型[ 1 ]和蠕變型[ 2 ]本構理論,給出了變溫過程中材料的鬆弛與蠕變模變量的轉換方法和轉換實例Numerical stability, the other issue of the lattice boltzmann method, is discussed in chapter 5. corresponding to the uniform and shear background flow, the stability of d2q7 d2q9 and d3ql5 model is analyzed through the von neumann linear stability theory, both the conclusion about the mass distribution parameters, the wave number, the relaxation time and the uniform velocity, and the linear stability criterion n r0. 58 are instructive to numerical simulation of flow
第五章考慮了數值方法另外一個方面的問題,在均勻流和剪切流兩種背景流場下,運用vonneumann線性分析法,針對d2q7 、 d2q9及d3q15格子模型,分析了質量分佈參數、波數、鬆弛時間和平均流速等決定模型穩定性的主要參數對模型穩定性的影響,得到了對流場數值計算具有指導意義的一般性結論與線性穩定性標準n r _ e ~ ( 0 . 58 ) 。According to the double - axis experiment and the uniaxial tension experiment, shear relaxation modulus and bulk relaxation modulus are obtained. fractional exponent models [ 23 ] [ 24 ] [ 25 ] are applied to shear relaxation modulus and bulk relaxation modulus. the theory is proved by constant amplitude cyclic strain experiment
通過雙軸拉壓實驗來確定材料的切變鬆弛模量,單軸拉伸實驗來確定材料的體變鬆弛模量,對這兩種模量均採用分數階指數的形式來進行擬合,再用等應變幅循環歷史的實驗驗證了理論,得到了較好的結果。A homogenization - based method for predicting the viscoelastic property of multi - layered composite material is presented. by laplace transforming the governing equation of the viscoellastic problem of jointed rock, the dependent relation of the laplace transformation of the effective relaxation modulus of jointed rock on the joint distribution was derived by applying the homogenization method in laplace transformed domain. then, the effective relaxation modulus was obtained from the inverse transformation
首先對層狀復合材料粘彈性問題的控制方程進行laplace變換,在像空間中利用均勻化理論建立宏觀鬆弛模量的laplace變化與各層形式的依賴關系解析表達式,通過laplace逆變換可獲得等效鬆弛模量預測的解析表達式,並給出了體積變形為彈性、剪切變形符合三元件模型的單向節理巖石的粘彈性鬆弛模量預測的數值算例。By laplace transforming the governing equation of the problem of unidirectional fiber reinforced composite materials, the formulae for predicting the viscoelastic relaxation moduli in laplace transformed domain are obtained. according to correspondence principle of viscoellastic mechanics and elastic, mechanics, the results of effective moduli for several s are obtained by using the finite element method of the homogenization. then effective relaxation moduli should be curve - fitted, according to the viscoelastic relaxation modulus formulae of many viscoelastic materials
首先對單向纖維增強復合材料粘彈性問題的控制方程進行laplace變換,在像空間s中利用均勻化理論建立宏觀鬆弛模量的laplace變換泛函形式,根據粘彈性-彈性對應原理,用均勻化問題的有限元方法預報單向纖維增強復合材料在相空間中多個離散點的本構關系,然後根據典型粘彈性材料的鬆弛模量具有的函數形式進行曲線擬合,再通過對擬合出的函數進行laplace逆變換,從而再回到時間t域,就得到了單向纖維增強復合材料的鬆弛模量。Numerical example was presented. on base of those, effective relaxation moduli could be curve - fitted by the function form of the three - parameter solid model
在此基礎上,用類似粘彈性三元件固體模型的形式去擬合離散的數值結果,得到了鬆弛模量更簡單的解析表達式。That makes the prediction of viscoelastic relaxation moduli easy. the numerical example was presented in the end of this paper
給出的單向纖維復合材料的粘彈性鬆弛模量預測的數值算例驗證了該方法的有效性。And then the brief description of the researches in micro - mechanics is presented. ( see chapter 1 ) 2. the basic conception of the homogenization theory is given, and then by laplace transforming, the formulae for predicting the viscoelastic relaxation moduli in laplace transformed domain are obtained from the governing equation of the problem of composite materials
(詳見第一章) 2 、在簡要介紹細觀多尺度均勻化方法的基本理論的基礎上,通過復合材料粘彈性問題的控制方程的laplace變換,並利用對應原理,在像空間中導出了利用均勻化理論預測宏觀鬆弛模量的laplace變換泛函形式。Viscoelastic mechanics theory was used as the basis for the displacement and relaxation experiment of wire rope structure. the study the time co - reliance of wire ropes was finished and the calculation model for the wire rope relaxation amount was proposed
基於粘彈性力學理論,對鋼絲繩結構進行了位移鬆弛試驗,在此基礎上完成了鋼絲繩時間相依性研究,提出了鋼絲繩鬆弛模量計算模型。To analyze economic compensations in the power market, the super decoupled load flow algorithm with distributed slack bus was adopted to conduct simulation analysis and calculation for power generation deviation
摘要針對電力市場環境下經濟補償分析的需要,採用分散式鬆弛節點的超解耦潮流演算法對某實際電網發電偏離電量的現象進行了模擬分析計算。分享友人