本文改变传统的数学建模方法，运用神经网络方法，建立一个粘土的非线性本构关系模型。
Instead of traditional methods, a neural network method for building the nonlinear constitutive law model of clay is proposed in this paper.
通过对试验结果的分析，提出经过简化的压电陶瓷PZT4的非线性本构关系，建立相应的有限元计算方法。
On the analysis of experimental data, the simplified nonlinear constitutive laws for piezoelectric ceramic PZT 4 are presented. The corresponding finite element method is established.
根据混凝土的非线性本构关系，提出了粘钢加固梁的开裂弯矩、极限弯矩、刚度的计算方法，并将理论值与试验值进行对比分析。
Calculating methods of cracking moment, ultimate moment, stiffness of the beams strengthened by steel plate are offered according to the non-linear relationship between stress and strain of concrete.
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.
对于平纹机织复合材料，剪切变形是最主要的变形形式，其本构关系具有非线性的特征。
The shear deformation, as in a nonlinear constitutive relation, is the most principal deformation mode for plain woven textile composites.
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.
应用传统的极限分析理论，对可简化为刚塑性的材料本构关系提出了一种改进的“刚性-非线性强化”近似模型。
Advances an improving rigid nonlinearity hardening approximate model of the constitutive relations using the traditional theory of plastic limit analysis.
在正交法设计的高温拉伸实验结果的基础上，本文建立了TC6钛合金本构关系的非线性模型。
Based on the experimental results of isothermal strain rate tension test, a non-linearity model of constitutive relationships for TC6 titanium alloy was established.
将所得变化规律与等效粘性阻尼理论相结合，给出了一种依赖于应变和频率的非线性阻尼本构关系式。
Based on above fitted relation and equivalent viscous damping theory, a nonlinear constitutive equation of damping alloy depending on strain amplitude and frequency is put forward.
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。
Based on an effective nonlinear viscoelastic model, the differential constitutive equation and strain-rate equation of solid composite propellants are induced.
考虑具有介质阻尼及非线性粘弹性本构关系的梁方程，证明了它的有界吸收集和有限维惯性流形的存在性，并由此得到在一定的条件下所给偏微分方程等价于一常微分方程组的初值问题。
The equations of nonlinear viscouselastic beam are considered, The existence of absorbing set and inertial manifolds for the system are obtained, and from which we get that the P D E.
考虑具有介质阻尼及非线性粘弹性本构关系的梁方程，证明了它的有界吸收集和有限维惯性流形的存在性，并由此得到在一定的条件下所给偏微分方程等价于一常微分方程组的初值问题。
The equations of nonlinear viscouselastic beam are considered, The existence of absorbing set and inertial manifolds for the system are obtained, and from which we get that the P D E.
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