The relationship between the melt fracture and the non-linear viscoelasticity for PE-HD, POE, and PE-LLD was studied using a capillary rheometer.
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 research advance in modified models from different points of view, especially success in predicting nonlinear viscoelasticity, are reviewed.
介绍了高分子蠕动模型的基本思想及在预测高分子熔体或浓溶液流变学行为时的成功与不足 ,综述了从不同角度出发对其进行修正及在预测非线性粘弹性行为的研究进展、初步分析了此模型的发展方
In this paper,the basic axiom of setting the material constitutive relationships is expounded; the constitutive relationships of various nonlinear viscoelasticity are introduced; and the correspondence principle for nonlinear viscoelastic problem is discussed.
阐述建立物质本构关系时应满足的基本公理 ,较详细地介绍了各种类型的非线性粘弹性本构关系 ,论述了对于非线性粘弹性问题求解具有实际意义的对应原
In this paper, firstly, based on the Leaderman constitutive relations in nonlinear viscoelasticity and the linear geometrical assumption, a mathematical model for bending problems of nonlinear viscoelastic beams is set up.
首先从松弛型的非线性 L eaderman本构关系出发 ,利用线性几何假设 ,建立了非线性粘弹性梁弯曲问题的数学模型 ;其次 ,利用 L aplace变换法证明了非线性粘弹性梁问题与非线性弹性梁问题之间存在着某些对应关系 。
By analysing the stress strain curves and specimen,a conclusion can be drawn that TF14 explosive is a predamaged nonlinear viscoelastic solid and the stress strain curves are fitted in the strain rate range of 10 2～10 3s -1 also.
根据实验结果和回收样品分析确认ＴＡＴＢ属于含预损伤的非线性粘弹性体，并对１０２ ～１０３ｓ－ １ 应变率范围内的应力应变曲线进行了拟
The aim of this paper is to derive the power law type nonlinear viscoelastic crack-tip fields.
研究幂率型非线性粘弹性裂纹尖端场 。
Based on the boundary model presented by Novak, the soil around the single pile is pided into two regions: the inner nonlinear viscoelastic region and the outer linear viscoelastic region.
在Novak边界层模型基础上,将桩周土分为非线性粘弹性内域和线性粘弹性外域,采用随内域平均应变减小的剪切模量和增长的材料迟滞阻尼比近似考虑内域的非线性粘弹性,采用等效线性方法对端承桩与三维土层的竖向耦合振动进行了研究,得到了非线性土中单桩竖向动力阻抗函数。
The vertical chaotic motion of the nonlinear viscoelastic pile embedded in rock with a vertical displacement, is investigated.
结果表明纵向振动的非线性粘弹性桩可以呈现周期运动、准周期运动、分岔或混沌运动。
An Instantaneous Elastic Constitutive Relation for Nonlinear Viscoelastic Materials;
非线性粘弹性材料的一个瞬时弹性本构关系
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
STUDY ON NONLINEAR VISCOELASTIC CONSTITUTIVE EQUATION OF MODIFIED ASPHALT AND ITS APPLICATIONS
改性沥青非线性粘弹性本构关系研究及应用
Precise Algorithm in Time Domain for Solving Nonlinear Viscoelastic Problems;
求解非线性粘弹性问题的时域精细算法
Initial-Boundary Value Problems for the Nonlinear Viscous-Elastic Plate Equatons;
一类非线性粘弹性板方程的初边值问题
Research on the Theory and the Solution Approach of Nonlinear Viscoelastic Problems;
非线性粘弹性本构理论及其求解方法的研究
Studies on the Constitutive Relation for Nonlinear Viscoelastic Concrete with Damage;
考虑损伤的混凝土非线性粘弹性本构关系研究
Experimental Research and Theoretical Model of Nonlinear Viscoelastic Crack Growth;
非线性粘弹性裂纹扩展的实验研究与计算模型
Studies on the Constitutive Theory for Nonlinear Viscoelastic Materials with Damage;
含损伤非线性粘弹性材料本构理论研究
A Dynamical Model for Nonlinear Viscoelastic Beams;
一类非线性粘弹性梁的动力学模型及其简化
Non-linearity Viscoelasticity Model of Aged Asphalt Mixture
老化沥青混合料非线性粘弹性模型研究
So, nonlinear viscoelasticity is important for the characterization of rubber materials.
因此,非线性粘弹性对于橡胶材料的表征是非常重要的。
Analysis of dynamic response of visco elastic geometric nonlinear sandwich beam[KH*2D〗
粘弹性几何非线性夹层梁动响应分析
Studies on Non-Linear Dynamics of Viscoelastic Moving Belts;
粘弹性传动带的非线性动力学的研究
Nonlinear vibration analysis of viscoelastic isolator
粘弹性阻尼隔振体的非线性振动分析
Experimental Studies of Viscoelastic Composite Materials Nonlinear Dynamic Characteristics;
粘弹性复合材料非线性动力学行为的实验研究
The Global Dynamics of Elastic Beam Equation with Nonlinear Boundary Conditions;
非线性边界条件下粘弹性梁方程的整体动力学
Elastic-Viscoplastic Consolidation Theory of Non-linear Rheologic Structured Soft Clay and Settlement Calculation of Vertical Drains Ground
非线性流变结构性软粘土弹粘塑性固结理论及砂井地基沉降计算