1) variational derivative
变分导数
2) rheological model with fractional order derivatives
分数阶导数流变模型
1.
At the same time,in allusion to rheological characteristics of jointed rock mass,by making use of theory of rheological model with fractional order derivatives,a practical calculation method in which rheological characteristics are t.
基于等效MohrOCoulomb屈服准则原理,通过岩体材料参数的人工换算,实现其在有限元软件Ansys中的应用,并验证转化后参数与原参数之间的大小关系;同时针对边坡岩体流变特性,利用分数阶导数流变模型理论,提出考虑岩体流变特性的一种实用计算方法,通过Ansys弹塑性计算分析过程中改变材料特性的功能来处理边坡岩体材料的流变问题,算例表明该方法是可行的。
4) fractional derivative
分数导数
1.
Analysis on forced vibration of two degrees of viscoelastic damping system described by fractional derivative model;
简谐荷载作用下分数导数型粘弹性两自由度阻尼系统受迫振动分析
2.
Dynamic FE equation and its numerical solution of fractional derivative viscoelastic damper;
分数导数型粘弹性阻尼器的动力学有限元方程及数值解
3.
Mechanical Properties of Viscoelastic Materials Modeled by Fractional Derivative and Application Study on Suppressing Vibration of Structure;
分数导数型粘弹性材料的力学行为及在结构减振中的应用研究
5) fractional calculus
分数导数
1.
Some damping proprieties of the fractional calculus model for viscoelastic materials;
分数导数型黏弹性材料的一些阻尼特性
2.
This paper discusses the dynamic properties of viscoelastic materials modeled by fractional calculus constitutive model.
运用分数代数及本构理论 ,讨论了具有分数代数Maxwell本构关系的粘弹性材料的储能柔量、耗散柔量、耗散率、内摩擦角等参量随频率的变化规律 ,分析了具有分数导数Maxwell本构关系的粘弹性材料的一些阻尼特性。
3.
To address the stress strain relation, a power polynomial of strain was used to describe the nonlinear elasticity of the material, while a fractional calculus was used to reflect the linear viscoelasticity of the foam.
采用多项式函数与分数导数模型分别描述泡沫塑料的非线性弹性与线性粘弹性,推导该模型在恒速加卸载工况下响应的表达式。
6) covariant derivative
协变导数
1.
We illustrate the proof of the definitior for the covariant derivative of the general tensor in the paper.
本文给出一般张量的协变导数定义式的证明,并简述其基本性
补充资料:分数阶积分与微分
分数阶积分与微分
og fractional integration and differentia-
分数阶积分的逆运算称为分数阶微分:若几介F,则f为F的:阶分数阶导数(na ctional deriVative).若0<戊
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条