薄板的

For the generalized boundary value problem a complete set of boundary integral equations and relevant numerical scheme are established.

利用 Hankel 变换导出了弹性地基上薄板弯曲问题的基本解，此基本解对三种常用地基模型具有统一的表达形式，针对近年提出的广义边值问题，建立了统一的边界积分方程和边界元求解格式。

This article presents an ideal energy distribution for improving the cutting speed of thin plane glass.

本文透过多曲面反射镜的设计来控制雷射光能量场的分布，使YAG雷射应用於薄板玻璃切割时能加快切割速度，并利用田口法进行多曲面反射镜的优化，使雷射光能量场的分布更接近预期状况。

The postbuckling behavior of a long rectangular plate with initial deflection under uniaxial compression is discussed based on the large deflection theory of thin plates.

本文应用薄板大挠度理论，对有初挠度的长矩形板在纵向压力作用下的屈曲后行为进行近似分析，推导出计算板的极限强度和有效宽度的理论公式。

Finding out the maximum point of the equivalent plastic strain on each of the vertical lines, a group of discrete points on the critical slip surface will be obtained. Last, the discrete points are smoothed by means of the thin-plate smoothing spline; and the position of the critical 3D slip surface is determined.

最后，采用被称为薄板光顺样条(thin-plate smoothing spline)函数的插值方法对滑面上的离散点进行了插值光顺处理，在不指定边坡滑动模式和滑面形状的前提下就可以得到三维边坡的临界滑面。

Based on dynamic equilibrium equations of three-dimensional elasticity, a state equation was established for orthotropic foundation plates using double Fourier series, in which no assumption about stress or displacement modes was made. Analytical solutions and frequency equations of unified formulas were presented for thin and thick laminated foundation plates.

从三维弹性力学动力平衡方程入手，抛弃应力或位移模式的人为假定，利用Fourier双重级数，建立了正交各向异性地基板的状态方程，并分别给出了地基上任意层厚薄板静力问题的统一解析式和动力问题的频率方程。

A bstract: Load Identify has always been one of the important aspects in dynamics. This paper gives us a new way to identify one point dynamic load which is act on a sheet. The method is based on the modal theory and Duhamel integral. Result obtained from a simulation indicates that the method is simple and easy to operate especially when it is used to identify transient load.

载荷识别一直是系统动力学研究领域重要的一方面，本文以平面薄板结构为例，基于模态叠加理论，从 Duhamel积分出发，考察无限自由度系统在单点激励动载荷作用下的载荷识别问题，本文提出的方法具有简单、易操作等特点，通过仿真分析，其对于瞬态激励有比较好的识别精度。

Methods In the first place,the mathematical model of the dynamical response of viscoelastic thin plates is established in physical space,then the fundamental equation in Laplace domain is obtained by using Laplace transformation.

首先在物理空间建立了粘弹性薄板动力响应问题的数学模型，然后利用拉普拉斯变换得到拉氏变换域的基本方程；利用基本方程的基本解，由边界元方法得到边界积分方程，并求得数值解；最后通过数值 Laplace 逆变换得到原问题的解。

According to the boundary condition of the actual rectangular plates, it is very easy to get the characteristic equation for the problem through the boundary value of the generalized solution.

根据实际矩形板的边界条件，再应用弹性矩形薄板稳定问题的广义位移解的边界值，很容易便可得到该稳定问题的特征方程。

All the above research forms the basis theory system of vibration theory modality and experimental modal for the light thin plate retaining wall system and its health diagnose technology.

通过本文的研究，形成了轻型薄板挡土墙系统振动理论模态与试验模态的基本理论体系以及健康诊断的分析技术。

Moreover the vibration frequencies of the plate are computed using iterative method,which begins with the in vacuo eigenfrequency and continues nutil in-water eigenfrequency converges.

至于弹性薄板在水中的振动问题，Helisse[6 ] 回顾了研究历史，他用一组特定的三角函数作为基函数采用瑞利-里兹方法求解了有、无障板条件下矩形板在水中的

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。