CAJ | 학술논문

针对复合材料天线罩螺栓连接结构的损伤失效问题，采用试验和渐近损伤分析方法对复合材料天线罩螺栓连接结构的损伤失效进行了研究，分析了螺栓连接结构在等效风载压力和拉力作用下的失效过程和失效强度，并对天线罩连接结构折角位置玻璃钢蒙皮的过渡方式对其力学性能的影响进行了分析。试验和数值研究结果表明，连接结构试件的初始破坏均表现为玻璃钢蒙皮与泡沫芯材间的层间开裂，初始开裂载荷为0．7倍左右的结构失效载荷，玻璃钢蒙皮采用隔层断开过渡的加工工艺可显著提高天线罩连接结构的强度，数值预测的结构失效强度与试验结果吻合较好。
침대복합재료천선조라전련접결구적손상실효문제，채용시험화점근손상분석방법대복합재료천선조라전련접결구적손상실효진행료연구，분석료라전련접결구재등효풍재압력화랍력작용하적실효과정화실효강도，병대천선조련접결구절각위치파리강몽피적과도방식대기역학성능적영향진행료분석。시험화수치연구결과표명，련접결구시건적초시파배균표현위파리강몽피여포말심재간적층간개렬，초시개렬재하위0．7배좌우적결구실효재하，파리강몽피채용격층단개과도적가공공예가현저제고천선조련접결구적강도，수치예측적결구실효강도여시험결과문합교호。
The failures of the steel?to?composite joints for the radome in ship were researched by using the progres?sive damage analysis and experiments were applied to . A number of studies have been carried out on the structural failure process and static strength of the joints under equivalent wind load and pulling force. The mechanical effect of the transitional way of FRP skin at the angular position of joints structures was analyzed. The tests and numerical study results showed the initial failure modes of all specimens manifest delamination between FRP skin and foam core. The initial failure load equals to 0. 7 times of structural failure load. The experimental investigation verified that transition process of the compartment can significantly increase the strength of the joints of radome. Finite?ele?ment?based progressive damage analyses showed good correlation with experimental results.