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      creep
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  蠕变
    THE GENERALIZED VARIATIONAL PRINCIPLES IN THEORY OF CREEP
    蠕变理论的广义变分原理
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    DAMAGE MODELLING FOR PREDICTION OF PLASTIC OR CREEP FATIGUE-FAILURE IN STRUCTURES
    预估结构中的塑性破坏或蠕变疲劳破坏的损伤模型
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    The Creep Analysis of Simply Supported Circular Plates
    简支圆簿板的蠕变分析
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    STRESS INTENSITY FACTORS FOR CREEP FRACTURE AND THEIR APPLICATION
    蠕变断裂应力强度因子及其应用
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    Describing Creep of Metals by Viscoelastic Theory
    用粘弹性理论描述金属蠕变规律
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  蠕变
    THE GENERALIZED VARIATIONAL PRINCIPLES IN THEORY OF CREEP
    蠕变理论的广义变分原理
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    DAMAGE MODELLING FOR PREDICTION OF PLASTIC OR CREEP FATIGUE-FAILURE IN STRUCTURES
    预估结构中的塑性破坏或蠕变疲劳破坏的损伤模型
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    The Creep Analysis of Simply Supported Circular Plates
    简支圆簿板的蠕变分析
评价 添加词条 短句来源
  
    STRESS INTENSITY FACTORS FOR CREEP FRACTURE AND THEIR APPLICATION
    蠕变断裂应力强度因子及其应用
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    Describing Creep of Metals by Viscoelastic Theory
    用粘弹性理论描述金属蠕变规律
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  “creep”译为未确定词的双语例句
    Mechanical Analysis of Creep Extension of Crack in Rock
    岩石流变断裂扩展的力学分析
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    Research on Creep Crack Growth of Nonlinear Viscoelastic Body
    非线性粘弹性体裂纹扩展速度的研究
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    STEADY STATE CREEP BRITTLE CRACK GROWTH AT HIGH TEMPERATURE
    蠕脆性材料的高温稳态裂纹扩展研究
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    Based on Timoshenko-Mindlin shear deformation theory and small deflection hypothesis, the creep buckling for viscoelastic laminated plates and cylindrical shells are analyzed. Laplace Transformation is employed to the governing equation to derive the critic loads in the phase space, and extremum theorems of Laplace Inversion Transformation is then used to acquire the instantaneous critic loads and durable critic loads. It is verified that the results of two types of critic loads, obtained by viscoelastic approach and quasi-elastic approach respectively, are identical.
    基于Timoshenko-Mindlin剪切变形理论和小挠度假设,导出粘弹性层合板和层合圆柱壳的压曲方程,并利用Laplace变换,得到相空间的临界荷载,由Laplace逆变换的初、终值定理,获得层合板和层合圆柱壳的瞬时临界荷载与持久临界荷载,由此证明了持久临界荷载的粘弹性解法与准弹性解法的一致性。
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    In this paper, based upon a mechanics model of craze-induced crack and energy absorption rate eriterion, a viscoelastic boundary element method has been developed and applied for calculating the time-dependent opening displacement and envelop stress on the surface of the oraze-induced crack system, and for predicting the creep propagation history of crack in polymer.
    本文发展了一个粘弹性边界元法,根据拟断裂引起断裂的力学模型和时间相关的能量吸收率原理,研究了高分子材料中裂纹的时间相关的张开位移、表面应力和扩展特性等。
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  creep
       Creep-resistant magnesium alloy design, plastic processing of magnesium alloys and rapid solidification processing of magnesium alloys have become the hot topics in magnesium technology.
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       Experimental research on the creep behavior and bearing capacity of repeatedly prestressed concrete beam
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       Furthermore, a kind of computational formula to calculate creep strain and deformation due to repeated prestressing in terms of time t was derived in this paper and the bearing capacity of this new structure has been tested.
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       The measurements were performed with the aid of a dynamic rheology in different regimes including determination of frequency dependences of rheological parameters, creep, and critical strain and stress at which the gelled systems are destroyed.
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       Phenomenon of delayed reversible deformation (inverse creep) of solids in surface-active media.
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         The present paper further applies the Lagrange multiplier method developing in to the flow theory of creep and get a series of generalized variational Principles for small and finite displacements in the theory of creep. Two of these derived variational principles in this paper are the generalized cases of two well-known variational principles of Kachanov. derived from the rate of minimum potential energy and from the rate of minimum complementary. energy. The equivalence of these two gene- rali...
            本文将(1)的拉格朗日乘子法推广应用于蠕变流动理论.得出一系列包括大位移变形的蠕变理论的广义变分原理。证明了  的两个从最小位能率原理和从最小余能率原理出发的变分原理是本文中两个广义变分原理的特殊情形,并证明了这两个变分原理是等价的.
文摘来源
         In creep buckling analysis, a ratio stress-strain method is proposed.Making use of a similarity relation among isochronous curves at given temperature, we can condense these curves to a non-dimensional stress-strain curve (i.e. a ratio stress-strain curve) together with a corresponding isochronous modulus-time relation. For the analysis of creep buckling, a ratio stress-strain method is proposed and the critical ratio stress is solved accordingly. Then, one can determine either the critical time...
            在蠕变分析中,本文提出了比应力-应变方法。利用相似性,一族等时应力-应变曲线可归结为一条无量纲的比应力-应变曲线和相应的等时模量与时间关系图。解出比应力值后,可以或是给定载荷确定临界时间或是给定时间导出可承受的载荷。分析了圆柱壳体的轴压蠕变屈曲。理论结果与已有的实验相符良好。
文摘来源
         Mechanical theories of damage are developed from thermodynamics concepts by meansof Kachanov's effective strees.For isotropic three-dimensional damage,an equivalentscalar stress is introduced as a linear combination of mean stress and octahedral shearstress.Then,constitutive equations are written for plastic,creep and fatigue damage phe-nomena.Tests and methods necessary to identify these three models,for each material,aredescribed and damage measurements are taken from damage coupling with elastic be...
            本文采用卡恰诺夫(Kachanov)的有效应力,从热力学概念发展了损伤的力学理论.对于各向同性的三维损伤,引入当量标量应力,该应力是平均应力和八面体剪应力的线性组合.从而建立了塑性、蠕变和疲劳损伤现象的本构方程.本文阐述了对各类材料验证这三种模型所必要的试验和方法,并且将损伤度量与弹性、塑性或粘塑性效应相联系.本文还给出解预估局部破坏的损伤方程的一些方法上的启示.
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