采用毛细管流变仪等仪器研究了一类聚乙烯熔体的挤出畸变与熔体非线性粘弹性的关系。
The relationship between the melt fracture and the non-linear viscoelasticity for PE-HD, POE, and PE-LLD was studied using a capillary rheometer.
本文利用线性粘弹性的对应原理得出了关于粘弹性岩石中井筒的井壁压力及位移的理论解。
An exact solution of pressure and displacement of a mine shaft situated in viscoelastic rock is obtained using the correspondence principle of the linear viscoelasticity theory.
首先找到非线性粘弹性与非线性弹性本构关系之间的对应，然后导出了两个弹性回复对应原理。
The correspondence between the nonlinear viscoelastic and the nonlinear elastic constitutive relations is found first, and then two elasticity recovery correspondence principles are deduced.
本文用随机等价线性化方法探讨了相邻结构之间用粘弹性阻尼器连接后的非线性随机地震反应。
Nonlinear stochastic response analysis of viscoelastic damper-connected adjacent multi-story buildings under earthquake excitation is performed in this paper using the equivalent linearization method.
建立了线性粘弹性半空间地基模型，并给出了地基柔度矩阵和刚度矩阵的计算公式。
The paper has established a linearly viscoelastic ground model in elastic half-space, and has derived the formulae of ground flexibility matrix and stiffness matrix.
粘弹性分析采用特殊的三元素标准线性固体模型拟合实验数据。
Viscoelasticity was analyzed by the special three element standard linear solid model.
其主要结果是两个用于求解一类物理非线性粘弹性问题的弹性回复对应原理。
The main results of this theory are two elasticity recovery correspondence principles, which are used for solving a class of physically nonlinear viscoelastic problems.
利用非线性动力学中的多种方法，考察了自由流动压对粘弹性圆柱壳稳定性的影响。
The influence of aerodynamic pressure on the stability of viscoelastic cylindrical shells is investigated by various methods in nonlinear dynamics.
结果表明即使在高应变率下，人的密质骨也具有非线性粘弹性材料的特性。
The results showed that human cortical bone behaved as a non linear viscoelastic material even at high strain rate.
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.
得到了幂率型非线性粘弹性材料，特别是改性聚丙稀的裂纹尖端应力、应变和位移场的解答。
The solution of the crack-tip stress, strain fields for the power law type nonlinear viscoelastic materials, especially for the modified polypropylene, is obtained.
该文研究了非线性粘弹性土层中粘弹性悬浮桩侧向振动的动力刚度。
Dynamic stiffness for lateral vibration of a viscoelastic floating pile in a nonlinear viscoelastic soil layer is investigated.
应用形式渐近分析和拉普拉斯变换，我们从三维线性粘弹性方程组得到二维线性粘弹性弯壳的数学模型。
By applying formal asymptotic analysis and Laplace transformation, we obtain two-dimensional model system of linearly viscoelastic "flexural" shell from three-dimensional equations.
根据对淮南矿务局谢一矿巷道移近量观测资料的分析，将煤矿岩体视为不连续非均质线性粘弹性介质。
Based on the analysis of tunnel convergence in Xieyi coal mine, HuainanMine Bureau, the rock mass of coal mine is considered to be a discontinuous in-homogeneous linear viscoelastic medium.
研究了在给定桩顶轴向动位移条件下非线性粘弹性嵌岩桩纵向振动的混沌运动。
The vertical chaotic motion of the nonlinear viscoelastic pile embedded in rock with a vertical displacement, is investigated.
研究了在轴向载荷和周期性横向载荷共同作用下非线性粘弹性嵌岩桩的混沌运动情况。
The chaotic motion of a nonlinear viscoelastic rigid basic pile subjected to an axial force and a periodic horizontal force was investigated.
综合使用非线性动力学中的数值分析方法，研究了参数对粘弹性圆薄板动力学行为的影响。
The numerical methods in nonlinear dynamics are synthetically applied to investigate the influence of parameters on the dynamical properties of viscoelastic circular thin plate.
证明了简化非线性粘弹性本构关系对聚合物一类材料的适用性；
The practicability of simplified nonlinear viscoelastic constitutive relations for a class of materials as polymers is verified.
对周期载荷作用下，准线性粘弹性本构方程的响应进行了分析，结果表明它不能描述软组织的实验结果。
The analytical results on the quasi-linear viscoelastic constitutive equation under the periodic loading showed that the equation could not describe the experimental results of soft tissues.
讨论了具损伤粘弹性矩形板的非线性动力响应问题。
Nonlinear dynamic response of viscoelastic rectangular plate with damage was studied.
本文从非线性粘弹性物质的多重积分型本构方程出发，引入塑性应变，推导了粘弹塑性物质的微分型本构方程。
Introducing the plastic strain the differential constitutive equation for viscoelastic and plastic materials is deduced from multi-integral constitutive equation for nonlinear viscoelastic materials.
研究了轴向周期载荷作用下非线性粘弹性嵌岩桩纵向振动的混沌运动。
The chaotic motion problem for the Longitudinal vibration of a nonlinear viscoelastic pile subjected to an axial periodic force is investigated.
研究了外荷载作用下粘弹性浅拱的非线性动力行为。
The nonlinear dynamic of nonlinear viscoelastic shallow arches subjected to the external excitation is investigated.
利用它，只要知道相应的非线性弹性问题的解，就可以求出非线性粘弹性问题的解答。
By means of which, the solution of a nonlinear viscoelastic problem can be obtained if the solution of the corresponding nonlinear elastic problem is known.
考虑到粘弹性材料阻尼性能随环境的非线性变化，运用GRNN(广义回归网络)对粘弹阻尼材料动态力学性能函数进行逼近，并构建预测模型。
Considering the non-linear behavior of the viscoelastic material according to the change of environment, the GRNN is used to make a model to predict the dynamic property of the material.
并运用三维线性粘弹性有限元模型，对离心实验过程进行了数值模拟，以确定固体推进剂药柱在轴向过载作用下的变形问题。
Using three dimensional linear viscoelasticity finite element model, numerical simulation was performed. The deformation of solid propellant grain under axial acceleration was investigated.
分析了用曲线拟合估计粘弹性材料线性本构方程模型参数的原理和方法。
The principle and method for fitting and estimation of constitutive equation model parameters are discussed.
研究了轴向周期载荷作用下非线性粘弹性嵌岩桩的横向混沌运动。
The transverse chaotic motion problem of a nonlinear viscoelastic rigid basic pile subjected to an axial periodic force is investigated.
直接从线性粘弹性基本方程着手，引进位移的一般表达式，将问题归结为求解一个线性积分方程。
From the basic equations of a linear viscoelastic solid, we introduce general expressions of displacement so that the problem is reduced to solving a linear integral equation.
本文根据非线性粘弹性力学原理论述了沥青迁移的物理力学本质，并探讨了其影响因素及减轻沥青迁移的材料学方法。
This asphalt migration phenomenon from a non-liner viscoelastic mechanics is explained and its affecting factors and technical methods retarding such a migration are discussed.
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