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一、前 言 峰窝夹层结构的显著特点是具有较高的比强度、比刚度和弯曲强度,抗压稳定性好,表面光滑,疲劳极限较高。同时它还具有隔热、透电磁波和耐腐蚀等特性。与其它结构材料相比可减重20％左右。其主要缺点是承受集中载荷能力差,接头、开口设计制造困难、工艺稳定性差等,尤其是因设备安装、检查等工作的需要,欲要开一些大小不等的窗口,将引起材料的不连续,刚度发生突变,造成开口附近的应力集中,导致在开孔处首先破坏,从而引起整
I. Foreword Honeywell sandwich structure is characterized by high specific strength, stiffness and bending strength, compression stability, smooth surface, high fatigue limit. At the same time it also has thermal insulation, electromagnetic waves and corrosion-resistant characteristics. Compared with other structural materials can be reduced by about 20%. Its main drawback is to bear the concentrated load capacity is poor, the connector, the opening design and manufacturing difficulties, poor process stability, especially because of equipment installation, inspection and other work needs to open some windows of different sizes, will cause the material discontinuity , A sudden change in stiffness, resulting in concentration of stress near the opening, leading to the destruction of the first hole, causing the whole