梁在固有振动中的对偶关系 1)
胡海岩(
)
)
DUALITY RELATIONS OF BEAMS IN NATURAL VIBRATIONS 1)
Hu Haiyan()
)
图4. 固支-固支梁$a$,对偶的自由-自由梁$b$,梁$b$的镜像梁$c$的截面积对比
Fig. 4. A comparison of cross-sectional areas among clamped-clamed beam $a$, free-free beam $b$ in a dual, and beam $c$ mirrored from beam $b$
