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In this paper,applying the method of reciprocal theorem,we give the distributions ofthe amplitude of bending moments along clamped edges and the amplitude of deflectionsalong free edges of rectangular plates with two adjacent clamped edges under harmonicdistributed and concentrated loads. 相似文献
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In this paper the method of the reciprocal theorem(MRT)is extended to solve thesteady state responses of rectangular plates under harmonic disturbing forces.A series ofthe closed solutions of rectangular plates with various boundary conditions are given andthe tables and figures which have practical value are provided.MRT is a simple,convement and general method for solving the steady state responsesof rectangular plates under vartous harmonic disturbing forces.The paper contains three parts:(Ⅰ)rectangular plates with four clamped edges andwith three clamped edges:(Ⅱ)rectangular.plates with two adjacent clamped edges:(Ⅲ)cantilever plates.We are going to publish them one after another. 相似文献
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F.Gross提出问题:能否找到两个(甚至一个)有穷集会Sj(j=1;2),使得满足Ef(Sj)=Eg(Sj)(j=1,2)的任何两个整函数f和g必定恒等,这里Ef(Sj)表示Sj关于f的逆像,计重数.仅供助[6]对于亚纯函f,和g对此问题作了肯定的回答.本文以(S)和(S)代替EF(S)和Eg(S),对这个问题作了进一步的讨论,这里(S)是与Ef(S)相同的点集,但不计重教. 相似文献
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This paper treats the symmetrical bending of a uniformly loaded circular plate supported at k internal points.The boundary displacement and slope are expanded in Fourier seriesr.The method proposed by[6]is applied.As both the governing differential equation and boundary conditions are satisfied exactly,we therefore obtain the analytic expression of the transverse deflectional equation of the circular plate.This is an easy and effective methed. 相似文献
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半圆形弹性薄板的弯曲问题,由于其边界条件的复杂性,给求解带来一定困难.本文应用功的互等定理,提出一种计算此板挠曲面方程的简便、通用的算法. 相似文献
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提出一种新的混沌调制通信方法.利用一个自适应控制器跟踪信息信号的误差对产生混沌载波的发射系统进行参数调制.同时,信息信号直接与混沌载波相乘作为发射信号驱动接收系统.在接收端,另一个自适应控制器维持收发系统的混沌同步并恢复出信息信号.由于同步误差与信息信号无关,从而实现了大幅度、快时变信息信号的混沌调制通信.理论分析和数值模拟的结果表明该方法增强了低维混沌系统的通信保密性.
关键词:
混沌调制
保密通信
自适应控制器
蔡氏电路 相似文献