查询词典 plate bending

In this paper, the application of Hamiltonian systematic theory in plate bending problem is studied.

本文主要讨论哈密顿体系理论在弹性力学中的具体应用。

Based on the variational principle of virtual voltage and virtual displacement derived in this thesis and the classical theory of linear laminated plates, and by using the constitutive equations of elastic piezoelectric materials, and the DKQ quadrilateral plate bending element, the finite element modeling for the fabric reinforced laminated plates with nonlinear voltage-electric strain relationship of piezoelectric actuators has been established for the first time in this thesis. And the expressions for the electric loadings with obvious mechanical meaning and convenient for computation are established, which can be used to the deformation analysis of laminated plates with piezoelectric actuators under specified voltages.

以本文直接导出的压电结构的虚电势—虚位移变分原理为基础，依据经典线性层合板理论和压电弹性体的本构方程，采用基于离散法线假设的DKQ四结点任意四边形薄板弯曲单元，首次建立了考虑非线性电压—电应变关系的含压电致动器的纤维增强型层合板的有限元分析模型，并推导建立了力学意义明确、便于计算的电荷载表达式，可用于指定电压条件下纤维增强型叠层合成板的变形分析。

By employing a new pattern of combination, in which the analytic method is the basis and the numeric method is the reinforcer, the composite Fourier series method is proposed in the thin plate bending problem.

提出薄板弯曲问题的复合傅里叶级数方法。它以解析方法为融合基体，数值方法为融合增强相，是一种新的融合模式。

The element is based on the Reissner-Mindlin plate bending theory and is eccentrically stiffened with beam element.

采用非等参插值的方法避免了Mindlin板／壳单元用于分析薄板／壳结构时固有的剪切锁死问题，数值算例结果表明，该单元对与薄板和厚板均给出了精确的解。

Key words: beam; plate; bending theory; transverse shearing effect; universal finite element

关 键 词：梁；板；弯曲理论；横向剪切影响；通用有限单元

Our company main products have various specifications, models, materials, use of flat-panel, platform, workstation, flat-foot, square boxes, plate bending, deflection instrument, V-shaped iron, such as measuring series; heavy percussion wrench, special wrenches, Explosion-proof wrenches, special tools, such as explosion-proof tools series; a variety of iron castings, steel castings, machinery parts, equipment parts, machine tool bed, mold, mold and other ancillary pieces of castings, fittings, machinery spare parts series.

我公司主导产品有各种规格、型号、材质、用途的平板、平台、工作台、平尺、方箱、弯板、偏摆仪、V型铁等量具系列；重型敲击扳手、特种扳手、防爆扳手、防爆工具等特种工具系列；各种铸铁件、铸钢件、机械配套件、设备配套件、机床床身、模具、模具配套件等铸件、配套件、机械零部件系列。

Groupindustrial zone is situated in the junction of Jing-Guang-Jiu railway,Changping Town ,Dongguan,the factory covers an area of 22,000m or so,it is equipped with lots of automatic equipment processing parts imported from developed conutries Japans four-axis CNC lathe ,full-automatic laser cutter used for sheet metal,numerically controlled plate cutter,numrically controlled punch,plate-bending machine,automatic sheet metal coating production line,etc,it now fromulates annual production capability of more than 3,000 units.

集团工业园位于京广-九铁路交汇点东莞市常平镇，三年区占地面积22000余平方，拥有大批欧\美\日等国家先进的自动化设备加零件，如：电脑数控立，卧式CNC加工中心群，日本四轴CNC车床，板金使用的全自动化激光切割机、数控剪板机、数控衡床，弯板机、自动化板金喷涂生产线等。现已形成年产量3000多台的生产能力。

In standard testing condition, put a steel ruler on test piece and measure the initial length (S0) of marked position in longitudinal and transverse directions with vernier caliper to an accuracy of 0.1mm. Place test piece flatly on glazed tile plate sprinkled with little talcum powder, then put the plate into blast oven (80 ±)oC horizontally and prevent any fold.

5，6-Distance-adjusting screw 图 Figure 4 弯折仪 Bending jig 在标准试验条件下，在试件上面放一钢直尺，用游标卡尺测量试件纵横方向划线处的初始长度 S0，精确到 0.1mm，将试件平放在撒有少量滑石粉的釉面砖垫板上，再将垫板水平放入(80±2)oC 的鼓风烘箱中，不得叠放，在此温度下恒温 24h。

A 4-node Kirchhoff plate-bending element with distributed collated piezoelectric wafers is formulated. Thus the finite element model of the coupled plate is established.

推导了二维四节点离散克希霍夫压电单元，建立了压电耦合板的有限元模型。

Profile: Scrap shearing machine, hydraulic Da Baoji metal, metal shavings pressure pie machine, pressure plate-bending machines, automatic paper Da Baoji, conveyor chain plate and various presses, hydraulic, accessories And so on.

专业生产：废钢剪切机、金属液压打包机、金属屑压饼机、弯板压平机、全自动废纸打包机、链板式输送机及各种压力机、液压油缸、配件等。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐