The solution of the crack-tip stress, strain fields for the power law type nonlinear viscoelastic materials, especially for the modified polypropylene, is obtained.
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。
Through analysis of result of rheology test, an appropriate viscoelastic constitutive model has been found to fit the curve of stress-strain.
通过对流变试验结果的分析，找到了一种比较好的粘弹性本构关系来拟合流变试验曲线。
Introducing the plastic strain the differential constitutive equation for viscoelastic and plastic materials is deduced from multi-integral constitutive equation for nonlinear viscoelastic materials.
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。
A new theoretical interpretation for the strain softening and hardening effects, which were caused by the interior hysteresis nature of viscoelastic deformation.
对应变软化-硬化效应提出一种新的起因于粘弹变形内禀滞后效应的理论解释，并定名为粘弹软化-强化效应。
Under the instantaneous strain and yield limit calculated, judgement rule about viscoelastic and viscoplastic is established.
通过计算瞬时应变的大小与屈服限建立粘弹性变形和粘塑性变形的判断准则。
The results showed that human cortical bone behaved as a non linear viscoelastic material even at high strain rate.
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 effect is observed under cyclic loading conditions with small strain amplitudes, and is manifest as a dependence of the viscoelastic storage modulus on the amplitude of the applied strain.
效果观察与应变振幅小，在循环加载条件下，表现为粘弹性储能模量的依赖应用应变的振幅。
Based on an effective nonlinear viscoelastic model, the differential constitutive equation and strain-rate equation of solid composite propellants are induced.
根据一个有效的非线性粘弹模型，导出复合固体推进剂微分形式本构方程和应变速率关系式。
The validity of a SHPB test is based on the assumption of stress and strain uniformity within the specimen, especially when muscle-like viscoelastic exter-soft material is tested.
试样的轴向应力和应变均匀问题是霍普金森杆试验行之有效的必要条件，而这对肌肉类粘弹性超软材料尤为重要。
YANG J M, ZHONG X D, ZHAO Y Y. Strain energy and damping analysis of composite laminates with two interleaved viscoelastic layers[J]. Engineering Mechanics, 2010, (3): 133-138.
[57] 杨加明，钟小丹，赵艳影。复合材料夹杂双层黏弹性材料的应变能和阻尼性能分析[J]。工程力学， 2010， （3）： 133-138。
If the soil skeleton is regarded as the viscoelastic media, the stress-strain relation will be changed with time, which increases the complexity of the problems.
当土骨架是粘-弹性介质时，应力与应变的关系随时间变化，增加了问题的复杂性。
Although the experiments are restricted to small strain, it still reveals significant nonlinear viscoelastic behavior for polymer materials.
尽管实验限制在小变形范围之内，高分子材料仍表现出明显的非线性粘弹性性能。
Although the experiments are restricted to small strain, it still reveals significant nonlinear viscoelastic behavior for polymer materials.
尽管实验限制在小变形范围之内，高分子材料仍表现出明显的非线性粘弹性性能。
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