Strain Transfer Analysis of Simplified Interface of Embedded Optical Fiber Smart Composites Material
LIU Rongmei1, ZHAO Zhen1, BAI Shuwei2
1 College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016,China 2 Shanghai Electro-Mechanical Engineering Institute,Shanghai 201109, China
Abstract: When the optical fiber is buried in the composite material, an eye-shaped interface is formed due to the difference in the direction of the lay-up layer with the composite material. The eye-shaped interface is now simplified to a circle by area equivalence, a strain transfer model is established, and the model is evaluated based on finite element analysis.The average strain transfer rate of the two interface models under tensile load is calculated by finite element software and compared with the experiments. The results show that: the average strain transmittance of the two interface models under simulated tensile load is compared with that of the ophthalmic model. The strain transfer rate of the interface model at each point agrees well, and the results of the finite element calculations match with the experiments. The simplified interface model can replace the eye-shaped interface model for strain transfer analysis.
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2021, Vol. 35 
