CAJ | 학술논문

在刚性剖面假设的基础上分析具有蜂窝芯材薄壁盒式梁约束弯曲问题.应用分离变量法,建立并求解了两个常微分支配方程.边界条件可以精确满足,同时,解答是用本征函数展开式表达的.剪力图是由三角级数表示的,并用于决定上述本征函数展开式的待定系数.计算结果给出了蒙皮正应力与剪应力以及蜂窝芯材剪应力沿翼弦和翼展的分布规律并显示了附加应力的衰减情况.
재강성부면가설적기출상분석구유봉와심재박벽합식량약속만곡문제.응용분리변량법,건립병구해료량개상미분지배방정.변계조건가이정학만족,동시,해답시용본정함수전개식표체적.전력도시유삼각급수표시적,병용우결정상술본정함수전개식적대정계수.계산결과급출료몽피정응력여전응력이급봉와심재전응력연익현화익전적분포규률병현시료부가응력적쇠감정황.
Restrained bending of thin-walled box beam with honeycomb core is analyzed on the basis of rigid profile assumption. The method of variable separation is applied and two ordinary differential governing equations are established and solved. The boundary conditions are satisfied rigorously and the solutions are expressed by means of eigen function expansions. The diagram of shearing force is formulated by trigonometric series and used to determine the coefficients in above expansions. The computational results give the chord and span wise distributions of nomal and shear stress in the cover plate and the honeycomb core. At the same time, the attenuation of additional stress from fixed end to free end along the length of beam is shown clearly.