查询词典 optically isotropic

Four-node degenerated shell element and rigid shell element are used in our FEM model.Updated Lagrange formulation and rate form constitutive equation are adopted to solve the problem of large strain and large rotation in sheet forming process.Sheet metal material property is described by plastic anisotropy yielding model and isotropic hardening model.Master surface-slave surface contact model is used to define the contact between tools and blank.Contact constraints are enforced with a kinematic algorithm and friction stress is computed by Coulomb friction law.Dynamic relaxation method is used to treat springback after forming stroke.

四结点蜕化壳单元和刚体壳单元分别用来建立板和模具的有限元模型；更新Lagrange法和速率型本构关系被用来处理板料变形中的大应变和大转动；材料模型采用塑性各向异性屈服与等向强化模型；通过主从面模型定义板料和模具的接触，接触算法采用运动约束法，摩擦力用库仓定律计算；并利用动力松弛法对回弹过程进行了计算。

In chapter six, A finite element model to evaluate the mechanics properties of thin wall structure is put forwards. The 4-node quadrilateral Hughes-Liu shell element with five through-the-thickness integration points is employed. The material is assumed to satisfy the elastic-plastic yield condition with isotropic hardening. The single surface contact algorithm is taken to deal with the contact searching. The priori stabilization procedures for the numerical control of the hourglass instability and the penalty method for the evaluation of contact force are used. The classical Coulomb law of friction is employed to evaluate the friction force.

第六章采用法向方向5点积分的4节点Hughes-Liu壳单元，前置参数法砂漏控制技术，等向强化弹塑性材料模型，分步增量应力回映方法，一体化接触搜寻算法，罚参数接触力计算方法及经典摩擦定律，建立了一种计算受冲薄壁结构大变形力学特性计算的有限元模型，通过对汽车A传动轴及汽车纵向方形吸能梁的大变形力学特性分析，验证了该有限元模型的正确性。

The paper showed a parameter representation of isotropic vector in complex vector space, and obtained the some properties.

给出了复向量空间中的迷向向量的一种参数表示，并由此获得了迷向向量的一些性质。

The results show that the sensor is decoupled and isotropic.

分析计算结果表明该传感器是力与力矩解耦和各向同性的。

Objective To evaluate the diagnostic value of Isotropic Scanning in Small Pulmonary Nodules,and to improve diagnostic level.

目的 评估各向同性重建对肺孤立结节性病变的诊断价值，提高小结节的诊断水平。

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。

The theory of isotropy damage is based on the hypothesis that the material and damage are symmetrical and isotropic.

各向同性损伤理论是建立在材料是均匀的、各向同性的以及损伤也是各向同性的假设基础之上。

This works fine for isotropic point lights and similar, but when using measured light data, one

作品有完美等方性的点光和类似的，但是当使用标准的光数据时候，能得到一结果

It leads to one simple equation, which, in the isotropic case, is the bipotential equation

因为它可以推出一个简单的方程，在各向同性的情况下，这个简单方程是一个双位势方程。

First,as the start of this thesis work,the acoustic field in an isotropic half-spaceis studied in detail.

第三，研究了用有限元法来模拟激光脉冲线源在各向异性媒质中产生的声场。

I'm not an actor. I'm a professor of paleontology.

我不是演员，我是古生物学教授

Spider Network Web site that is a very image of the name.

网络蜘蛛即Web Spider，是一个非常形象的名字。