中间层厚度对三明治结构中 I 型断裂能量释放率的影响研究$^{\bf 1)}$
张凡凡*,宋晶如*,马寒松*,刘小明*2)(),魏悦广**
EFFECT OF INTERLAYER THICKNESS ON THE MODE I FRACTURE ENERGY RELEASE RATE OF SANDWICH STRUCTURE$^{\bf 1)}$
Zhang Fanfan*,Song Jingru*,Ma Hansong*,Liu Xiaoming*2)(),Wei Yueguang**

图6. 非中间层,长度为 $\text{d}x$ 的微元体受力平衡图

Fig.6. Non-interlayer force balance diagram of microelements with length $\text{d}x$