The creep compliance is obtained from the back analysis which is based on the measured displacement. The nonlinear technique is applied to identify the constitutive expression of rock. The rock viscoelastic parameters is developed. 先由相应的位移实测值用解析法反演岩石的蠕变柔量,再由岩石的蠕变柔量运用非线性优化技术辨识出岩石本构模型表达式,最后进一步由模型参数反算出岩体的粘弹性参数。
Creep compliance of fractional viscoelastic models: generalized Zener and Poynting-Thomson models 分数阶黏弹性模型的蠕变柔量:广义Zener和Poynting-Thomson模型
The cured beams of epoxy asphalt concrete were tested using MTS-810 by methods of Binding Creep Test, and the gained compliance modulus was transformed into relaxation modulus. Based on the Boltzmann Superposition Principle, the thermal stress of steel-deck pavement of epoxy asphalt concrete was calculated. 采用固化后的环氧沥青混凝土小梁,在MTS810材料试验机上进行弯曲蠕变试验,利用数值计算将蠕变柔量转换为松弛模量,运用Boltzmann叠加原理分析环氧沥青混凝土钢桥面铺装层的温度应力。
Based on the experimental study, volume creep compliance, volume relaxation modulus and their main curves and initial void content of solid propellant are given. 通过实验研究,给出了固体推进剂的体积蠕变柔量、体积松弛模量和材料的初始气孔率。
Influence of the Heat Setting Process on the Relaxation Modulus and Creep Compliance of Polyester Fibers 热处理对涤纶松弛模量和蠕变柔量的影响
Determination of the creep compliance of surrounding rock of a circular tunnel and the identification of its mechanical model 圆形隧道围岩蠕变柔量的确定及粘弹性力学模型的识别
Analysis on creep compliance of cracked rock 裂隙岩体蠕变柔量分析
The results obtained from relaxation modulus show good agreement with experimental data of creep compliance. 结果表明:由松弛模量计算蠕变柔量的理论值与实验值吻合;
Based on the concept of creep complicance, the rock constitutive model is identified from the general expression of viscoelastic constitutive model using the back analysis of displacement and creep compliance. 本文回顾了常用的几种岩石粘弹性本构模型,依据蠕变柔量的概念,用位移和蠕变柔量两步反分析法从粘弹性本构模型的一般表达式中辨识出岩石的本构模型。
An Age-adjusted Effective Modulus Method with the creep compliance functions is used to analysis the time-dependent effects of creep. 本文利用随时间调整的有效模量法,采用付氏级数形式的徐变函数;
Discussion on Transformation Formulas Between Complex Compliance and Creep Compliance, Complex Modulus and Relaxation Modulus in Linear Viscoelasticity 复柔量-蠕变柔量和复模量-松弛模量转换公式的讨论
It is shown by comparison with the traditional concrete rheological models that the standard-linear-like body can simultaneously simulate the creep compliance and the relaxation modulus curves of the concrete of different age very well. 与传统的混凝土流变模型相比较表明,类标准线性体可以更好地同时拟合混凝土在不同龄期的蠕变和松弛曲线。
The corresponding temperature shift factors, stress shift factors and temperature-stress shift factors were obtained according to the time-temperature-stress superposition principle, and the creep compliance master curve up to about 30 days at a reference temperature 22 ℃ and a reference stress 14 MPa was constructed. 本文应用时间-温度-应力等效原理,得到相应的温度移位因子、应力移位因子和温度-应力联合移位因子,构建了参考温度和参考应力水平条件下的蠕变柔量主曲线。
The creep compliance of the composite resin reinforced with RF is significant smaller than that of NF composite resin ( P < 0.01). 含RF填料复合树脂的柔量明显小于普通填料复合树脂(P<0.01)。
Relation modulus and creep compliance are gained on base of the model and the viscoelastic theory, establish the constitutive equation. 基于该模型,应用粘弹性力学理论,获得松弛函数及蠕变函数,建立苜蓿草片的微分型和积分型本构方程。
Burgers model is applied to simulate the test and it is concluded that Burgers model is a better way to simulate the creep compliance curve of the creep test, and to elucidate the reason why modified ( bituminous) mixture has better thermal stability with viscoelastic theory. 该试验结论指出,Burgers模型可较好地模拟蠕变试验的蠕变柔量曲线,并使用粘弹性理论分析了SBS改性沥青混合料具有较好热稳定性的原因。
Analysis of creep compliance of jointed rocks with consideration of the influence of water pressure in saturated cracks 考虑裂纹内水压的节理岩体蠕变柔量分析
A practical creep compliance model of asphalt mixtures and its application 沥青混合料蠕变柔量的一种实用模型及其应用
In this paper, based on creep compliance experimental principle, an apparatus for testing T_g of polymers in high pressure environment is established. 根据蠕变柔量实验原理,自建一套测定高压环境下玻璃化转变温度的实验装置。
Practical Expressions of Relaxation Modulus and Creep Compliance 松弛模量与蠕变柔量的实用表达式
In this paper, the creep compliance of Hot-plate welded joint of PE80 pipe is measured, and the effect of creep on the crack tip stress field in the weld is investigated. 本文测定了燃气用PE80管材热板焊接接头的蠕变柔量,研究了蠕变对焊缝裂尖应力场的影响。
Creep Compliance Boundary Elements Applied to Viscoelastic Analysis Several problems associated with discontinuous boundary elements 粘弹性边值问题的蠕变柔量边界元法边界积分方程&非连续边界元离散方法及其应用
Reasonable method to estimate creep compliance of rocks jointed by parallel cracks 层状裂隙岩体蠕变柔量估计的合理方法
Creep compliance method for visco elastic analysis of the surrounding rock and supporting system in road way 巷道围岩支护系统粘弹性分析蠕变柔量法
The test results showed that the creep compliance and the creep strain growth speed for epoxy asphalt concrete were lower than those for normal asphalt concrete. 弯曲蠕变试验表明,环氧沥青混凝土的蠕变柔量较低,随着应力水平的增加,蠕变应变速率增长缓慢,具有较好的抵抗荷载变形能力。
Evaluation for Relaxation Modulus and Creep Compliance from Stress Relaxation Test Data 由应力松弛试验数据确定松弛模量和蠕变柔量