Meso-mechanical analysis for damping characteristics of glass/carbon fiber hybrid composite beam in hygrothermal environment

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (1) : 202-211.

SHAO Shiru, WANG Yang, SUN Shuangshuang

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Abstract

Based on the mesomechanics of composite materials, the damping prediction model of glass/carbon fiber hybrid composite laminated beams in hygrothermal environment was established by using the principle of energy dissipation and macroscopic strain energy method. The MATLAB calculation program for the loss factor of glass/carbon fiber hybrid composites under hygrothermal environment was written, and the influence of fiber laying angle, volume fraction, laying order and hygrothermal effect on the damping performance of glass/carbon fiber hybrid composite laminated beams was studied. The results showed that: hygrothermal strain is the main mechanism affecting damping characteristics; the loss factors of glass/carbon fiber hybrid composite laminated beams increase with the increasing of temperature and water absorption concentration, and the influence of temperature is much greater than water absorption concentration; the higher the fiber volume fraction, the greater the degree of influence by moisture and heat; the influence of ply angle on the loss factor is much higher than that of moisture and heat, ply mode, and fiber volume fraction.

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loss factor / glass/carbon fiber hybrid composites / strain energy method / hygrothermal effect / mesomechanics analysis

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SHAO Shiru, WANG Yang, SUN Shuangshuang. Meso-mechanical analysis for damping characteristics of glass/carbon fiber hybrid composite beam in hygrothermal environment[J]. Journal of Vibration and Shock, 2024, 43(1): 202-211

References

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