实验和研究表明:基于经典弹塑性及蠕变理论的本构方程,非弹性应变在高温下其本质上是时间相关的。
The experimental and research results indicate that non-elasticity strain associate with time in nature according to constitutive equations of the classical elastic-plastic and creep theory.
应用广义函数及蠕变理论,建立了汽轮机阶梯式变厚度轮盘在蠕变状态下的平衡方程、几何方程及本构方程。
By using the generalized functions and creep theory, the equations of equilibrium, geometry and constitution for stepped rotating disks of steam turbine are established under the creep condition.
基于蠕变理论提出了振动时效与循环蠕变在力学本质上的相关性,并对交变应力幅、温度和材料特性等共同影响因素进行了分析。
Based on the creep theory, the mechanical relationship of VSR and cyclic creep was discussed, and common factors such as stress amplitude, temperature and material properties were analyzed.
在这些现场和实验室研究结果的基础上,作者提出了蠕变扩容理论(1981 ~ 1983)和简化的脆性破坏理论。
On the basis of these field and experimental results he suggests the creep dilatancy theory (1981, 1983) and the simplified brittle failure theory.
在实验数据和理论公式相结合的基础上对格栅蠕变行为进行外推,这是预测格栅的长期使用寿命的方法之一。
One of predicting methods of is to extrapolate its creep behavior based on the combination of testing data and theory formula.
运用线性粘弹性理论研究了塑料在微通道成形中的蠕变和应力松弛现象,通过应力松弛实验验证了塑料的应力松弛行为。
This paper applies linear viscoelastic theory to study on the creep and relaxation phenomena and to verify the relaxation behavior through several stress relaxation experiments.
通过应用高温构件蠕变损伤的随机方程及一次二阶矩理论和方法,对高温构件的概率寿命预测进行了研究。
The probabilistic life prediction of high temperature components was studied by using the stochastic equation of creep damage and simple second-order theory and method of high temperature components.
并利用应力差理论分析了深部巷道围岩的蠕变破坏机理。
Finally, creep failure mechanism of surrounding rock in deep mining is analyzed by stress difference theory.
运用假想夹层分析理论,导出了一个较为简便的不锈钢包壳在通常工作环境下蠕变坍塌临界时间的计算公式。
A hypothesis sandwich analytical theory is used, and the formulas for calculation of the creep collapse critical time is given in this paper.
研究成果为深入研究裂隙角度对蠕变的影响以及预防煤层底板突水和瓦斯突出提供了理论依据。
Research results for further research on crack Angle on the influence of creep and water-inrush from coal floor and gas outburst prevention provide a theoretical basis.
本文用有限变形理论对人工冻结壁施工的几何非线性和冻土蠕变材料非线性问题进行了非线性数值分析。
This paper applies the theory of limited deformation analysis to the non-linear problem of the geometrician and creeping material for the frozen-wall.
目的:探讨兔挛缩膝关节髌韧带的应力松弛和蠕变特性,为临床治疗提供理论依据。
Objective:To discover the properties of stress relaxation and creep of patellar ligament(PL) on knee contraction in rabbits.
根据局部损伤理论和相似原理,给出了蠕变裂纹启裂前的孕育上下限时间并推导了蠕变裂纹扩展率方程。
Based on the local damage hypothesis and utilizing similarity solutions, this paper presents a procedure for estimating the incubation time prior to the onset of creep crack growth.
因此,研究岩石的蠕变特性以及岩石在扰动载荷作用下的变形效应,建立蠕变扰动效应理论,对深井软岩支护具有重要的工程实用价值。
Hence, studying of the creep property of rock under disturbing force and developing an appropriate theory for it are of great importance for support of soft rock in deep mining.
本文通过盐岩三轴蠕变实验、理论分析和数值计算研究了盐岩的非线性蠕变损伤机理。
The nonlinear creep damage mechanism of rock salt is investigated with triaxial creep tests, theoretical analysis and numerical simulation in the study.
如何建立木材在变载荷下蠕变的数学模型,是木材流变学在理论研究和生产应用中迄今尚未解决的问题。
How to establish creep model of under change loads are unfathomed contents in theory studies and applications of wood rheology.
因此,研究煤岩材料的蠕变损伤特性,具有重要的理论意义。
As a result, the damaging creep characteristics study of coal and rock material has a great theoretical significance.
基于平头压痕理论和蠕变损伤理论,提出了采用平头压痕试验和拉伸蠕变试验相结合的方法来确定铝合金2a12的蠕变剩余寿命。
A method of predicting the residual creep life of aluminum alloy 2a12 by using indentation test method with flat cylindrical indenters was proposed.
结果根据线性粘弹性理论拟合了试验曲线,得出了蠕变方程。
Results By viscoelastic properties theory regressed the experimental curve and obtained the creep function of C3 segment.
通过对冻土的流变特性进行理论分析,建立了冻黏土在复杂应力状态下的对数型蠕变方程。
Through theoretical analysis of rheological properties of frozen soil, the logarithmic creep equation of frozen clay is established under complex stress state.
根据压密变形规律从理论上探讨垮落介质固结的力学模型,揭示了垮落介质固结的力学模型符合岩石蠕变开尔文模型的非线形本质;
The mechanical model of collapse medium is investigated theoretically which revealed that the mechanical model of collapse medium is accord to non-linear nature of rock creep Kelvin model.
局部蠕变损伤理论的实质就是试样是多种不同蠕变性能材料的统一 ,并由蠕变应力再分布得到证实。
The essence of localized damage theory is that materials could be divided into several different groups with different creep damage and proved by stress redistribution.
结合理论分析和试验的方法,验证利用观察井监测腔体蠕变收缩体积这种方法的合理性。
By combining the theoretical analysis and test, the monitoring method of observation well, by which the volume shrinkage deformation of the cavity can be derived, is provided and verified.
算法以实测蠕变值与理论计算值之间的最小二乘误差为优化准则函数,直接反演计算蠕变模型参数。
With the optimization criterion of least square error between the measured creep value and theoretical creep value, microevolution algorithm inverse the creep model parameters directly.
算法以实测蠕变值与理论计算值之间的最小二乘误差为优化准则函数,直接反演计算蠕变模型参数。
With the optimization criterion of least square error between the measured creep value and theoretical creep value, microevolution algorithm inverse the creep model parameters directly.
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