中国舰船研究
中國艦船研究
중국함선연구
CHINESE JOURNAL OF SHIP RESEARCH
2013年
5期
52-57
,共6页
复合材料%加筋板%应变测试%光纤光栅
複閤材料%加觔闆%應變測試%光纖光柵
복합재료%가근판%응변측시%광섬광책
composite%stiffened plate%strain testing%fiber bragg grating
设计材料用量相同的复合材料帽形加筋板和T形加筋板,基于2种结构的应变规律理论分析和有限元应变计算结果,提出在筋内部铺设光纤光栅的方案,并制作试验模型进行应变试验测试。将理论应变分布规律、有限元应变计算结果、电阻式应变片测试结果和光纤光栅应变测试结果进行对比分析,结果表明,光纤光栅应变测试结果的线性度要优于应变片。对于帽形加筋板和T形加筋板,光栅的单向应变测试结果与有限元计算结果的误差分别为6%和4%,剪切应变误差均为23%,且上述误差均小于应变片测试结果与有限元计算结果间的误差。
設計材料用量相同的複閤材料帽形加觔闆和T形加觔闆,基于2種結構的應變規律理論分析和有限元應變計算結果,提齣在觔內部鋪設光纖光柵的方案,併製作試驗模型進行應變試驗測試。將理論應變分佈規律、有限元應變計算結果、電阻式應變片測試結果和光纖光柵應變測試結果進行對比分析,結果錶明,光纖光柵應變測試結果的線性度要優于應變片。對于帽形加觔闆和T形加觔闆,光柵的單嚮應變測試結果與有限元計算結果的誤差分彆為6%和4%,剪切應變誤差均為23%,且上述誤差均小于應變片測試結果與有限元計算結果間的誤差。
설계재료용량상동적복합재료모형가근판화T형가근판,기우2충결구적응변규률이론분석화유한원응변계산결과,제출재근내부포설광섬광책적방안,병제작시험모형진행응변시험측시。장이론응변분포규률、유한원응변계산결과、전조식응변편측시결과화광섬광책응변측시결과진행대비분석,결과표명,광섬광책응변측시결과적선성도요우우응변편。대우모형가근판화T형가근판,광책적단향응변측시결과여유한원계산결과적오차분별위6%화4%,전절응변오차균위23%,차상술오차균소우응변편측시결과여유한원계산결과간적오차。
In this paper,a composite hat-shaped stiffened plate and a T-section stiffened plate are de-signed with the same amount of material utilization. Based on the theoretical strain law and the Finite Ele-ment Analysis,the Fiber Bragg Grating(FBG)is proposed as the embedding material in the stiffeners. A testing model is then established accordingly,and the strain test on FBGs is conducted. The result shows that FBGs have better performance than that of electrical strain gauges in linearity. Moreover,compared with the result obtained with the Finite Element Method,the testing result on longitudinal strain shows an error of 6% and 4% for the hat-shaped stiffened plate and the T-section stiffened plate,respectively, while the errors on shear strain are 23% and 23%. It is worth noticing that these numbers are all smaller than that obtained with electrical strain gauges.