CAJ | 학술논문

平纹编织复合材料应用广泛 ,但该类型结构维修关键参数的研究较少 ,文章根据实际维修情况建立复合材料层板挖补结构的有限元计算模型 ,并通过试验验证了分析模型的准确性 ,基于该模型进行了附加铺层尺寸参数优化研究.结果表明 ,附加层的铺设对于提高修补板强度有积极的效果 ,但过多的附加铺层数容易增加修补缺陷 ,建议修理中附加铺层数不宜过多.优化过程中发现复合材料挖补维修存在一个对强度影响较大的附加铺层长度值 ,该临界长度正比于维修总区域 ,实际维修中附加铺层长度参数建议为该临界值的2~3倍 ,文中修补条件下的推荐值为20~25 m m ,该结论可为复合材料结构修补提供较为准确的维修指导.
평문편직복합재료응용엄범 ,단해류형결구유수관건삼수적연구교소 ,문장근거실제유수정황건립복합재료층판알보결구적유한원계산모형 ,병통과시험험증료분석모형적준학성 ,기우해모형진행료부가포층척촌삼수우화연구.결과표명 ,부가층적포설대우제고수보판강도유적겁적효과 ,단과다적부가포층수용역증가수보결함 ,건의수리중부가포층수불의과다.우화과정중발현복합재료알보유수존재일개대강도영향교대적부가포층장도치 ,해림계장도정비우유수총구역 ,실제유수중부가포층장도삼수건의위해림계치적2~3배 ,문중수보조건하적추천치위20~25 m m ,해결론가위복합재료결구수보제공교위준학적유수지도.
As the plain-woven composite is widely used but the research on its repairing is lacking ,a 3-dimensional finite element analysis model is developed for the plain-woven composite laminates repai-ring ,and corresponding experiments are made to verify the accuracy of the model .And the parameter optimization of covering layer is studied based on the model .The results of calculations and experi-ments verification show that covering layer has much effect on recovering strength ,but too many cov-ering layers may cause more repair flaws .There is a critical covering layer length in repairing which is sensitive to structural strength .The length of actual covering layer should be 2 or 3 times larger than the critical value and the length of 20 mm to 25 mm is advised in this case .The conclusion may be val-uable for directing the engineering practice of composite repairing .