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Treating with coils as aeolotropy, this paper brings forward a set of mathematical mode for computing internal stress distribution of coil in the process of coil coiling, in which some factors are taken into account, such as the transverse distribution of shape, crown and curl tension of the strip, the friction between the strip and the reel, the friction between strips, and etc. Because the reel shrinkage and the inner circle of the strip losing radial restrain and circumferential restrain can induce interlayer slipping and the change of the whole coil compactedness , the assumption concerned ——"virtual reel" in the process of coil uncoiling is put forward, which takes the form of slow action to express the uncoiling process and, therefore clearly simulates the variation course of internal stress distribution of coil in the process of coil uncoiling.

考虑到带材板凸度、卷取张力的横向分布以及带材与卷筒之间、带材与带材之间的摩擦力等因素的影响,并将钢卷按各向异性体处理,提出一套计算卷取过程中钢卷内部应力分布的数学模型;同时考虑到卸卷过程中由于卷筒的收缩,钢卷内圈失去径向和周向约束而引起层间滑移及整个钢卷紧密程度发生变化,提出钢卷卸卷过程中有关"虚拟卷筒"假设,将卸卷过程以"慢动作"的形式表示出来,清楚地模拟出卸卷过程中钢卷内部应力分布的变化历程。

Manufacturing the contact cable by material composite technology is a newly developed method in recent years. Due to its anisotropism and excellent ability of interfacial combination, in-situ composite shows a wonderful potential to giving the attention to the strength and the conductivity of conductive materials at on time.

采用材料复合技术研制导电材料是近年来发展起来的新方法,由于自生复合材料的各向异性和良好的界面复合能力,使其在解决导电材料的轴向强度和导电性的综合性能方面表现出了极大的潜力。

The theory and method of neural network,and the feasibility and superiority of building the coal bed geological model are also discussed by considering the geological variable characteristics,such as space territory,continuity,anisotropism and great non-liner relation.

摘 要:分析了建立矿床地质模型传统的估值方法的不足,针对地质变量之间具有空间局域性、连续性和各向异性,以及高度非线性关系的特征,阐述了应用人工神经网络原理和方法建立矿床地质模型的可能性和优越性,建立了地质变量参数估值计算的神经网络模型的基本结构,描述了地质变量与其影响因素之间的非线性映射关系,从而提出了基于人工神经网络原理的地质模型估值方法。

The support layer should be continuative and be provided with enough thickness and jerkwater seepage coefficient. The impact lies on the ratio of the seepage coefficient between wall and foundation. 6. Soil slaking deformation and its mechanism are analyzed, and its calculating method is discussed.

介绍了堤防渗透控制的主要内容、垂直防渗和水平防渗的措施;对堤防工程堤基的类型、堤防工程渗流的特点进行了分析,研究和探讨堤基渗透性能的各向异性和堤基表层的薄弱透水覆盖层厚度对渗流场的影响。

This paper is to research singular transport equations with anisotropic continuous energy homogeneous slab geometry for periodic boundary condition in slab geometry.

在Lp1周期边界条件下各向异性、连续能量、均匀介质的奇异迁移方程,证明了其相应的奇异迁移算子产生C0半群和该C0半群的Dyson-Phillips展开式的二阶余项是紧的,从而该算子的谱在区域Γ中由具有限重的离散本征值组成等结果。

We fit the anisotropic interaction potential based on the Murrell-Sorbie potential function for He-HCl system by applying the interaction energy data, which are calculated at the theoretical level of the single and double excitation coupled-cluster method with noniteractive perturbation treatment of triple excitation CCSD. The new potential model is compared with other potential models. The differential scattering cross sections for collisions between He atoms and HCl molecules are calculated by using CC (Close-Coupling) method. Furthermore, the changing regularity of the inelastic differential scattering cross sections is summed up.

根据在CCSD/aug-cc-pVQZ理论水平下计算的He-HCl相互作用能数据,作者采用Murrell-Sorbie势函数形式拟合了He原子与HCl分子相互作用的各向异性势,并与其它势模型进行了比较;然后采用公认的精确度较高的CC近似方法计算了He-HCl碰撞体系的微分散射截面,总结了非弹性微分散射截面的变化规律。

Based on the magnetic properties of the phase and on the effects of orientations and sizes of the crystallites, it has been inferred that the ζ-phase has a domain structure typical of uniaxial ferromagnetics with large magne...

基于相的基本磁性、晶体取向和尺度的討論推断,ζ相取典型单易磁化軸其磁各向异性很大的材料所具有的磁畴結构,但由于晶体尺度的限制,磁畴結构有所簡化而无釘形楔入畴。經粉碎的样品中,易見磁粉沉积区,认定其为单畴顆粒。

The analytic expressions for the displacement components and stresses at any point of an infinite micropolar orthotropic elastic medium with an overlying elastic half space as a result of moving inclined load of arbitrary orientation were obtained.

在无限大微极正交各向异性弹性介质上覆盖弹性介质的弹性半空间的任意点上,作用着任意方向倾斜的移动荷载,给出了位移分量和应力的解析表达式·假设倾斜荷载是法向荷载和切向荷载的线性组合·利用Fourier变换采用特征值方法,并利用数值技术反演了Fourier变换·给出了铝环氧树脂复合材料的数值结果图形

Using the Mindlin theory, the four-node finite element shell modal of healthy and damaged structure is formed; Using Green Function theory, the fluid around the structure is considered to be inviscid, irrotational and incompressible, and then the effect of fluid to structure is translated to the added mass matrix compared with global mass matrix using BEM.

基于Mindlin理论,本文建立了描述健康和损伤的四结点有限元板壳单元模型;基于Green函数理论,将结构所处的流体环境考虑为无粘、无旋、不可压缩的理想流体,推导了三维问题拉普拉斯方程的基本解,并利用边界元方法将流体对结构的影响归结为对结构整体质量矩阵的影响;针对各向同性损伤单元,采取刚度各向整体弱化的方法分析;对于各向异性损伤单元,采用Kachanov理论,引入了x和y两个方向的弹性损伤折减系数。

To establish the constitutive equation of material, the metric tensor for stress , strain and their transformation equations between different configurations are derived, and basic theory of finite deformation as well as elasto-plastic deformation criterion are studied. By analyzing the applicability of different element models, four-node quadrilateral degenerated Mindlin isoparametric element is adopted because of its good versatility, and the element stiffness matrix is derived. The static implicit elasto-plastic finite element equation for complex skin stretch-forming is put forward based on Updated Langrange formulation.

本文首先系统地阐述了有限变形的相关基本理论,针对板料成形建立了应力应变度量张量及其相应的转换关系;介绍了材料的屈服准则、塑性变形强化规律、塑性流动规律以及加、卸载准则,并在此基础上建立了有限变形各向异性弹塑性本构方程;对板料成形的单元模型进行了分析,针对飞机蒙皮零件特点,采用通用性强的四节点四边形退化Mindlin等参壳单元进行成形模拟,并导出其单元刚度矩阵的具体形式;基于以上研究,以逐级更新Langrange描述的持续虚功率原理为基础,建立了率形式的复杂蒙皮拉形过程静态隐式弹塑性有限元方程。

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But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.

Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。