Z-pin增强复合材料帽型单加筋板弯曲性能

doi:10.7527/S1000-6893.2016.0109

Abstract

Abstract:

The Z-pin reinforcing technology is used to improve the less good bending bearing performance of composite hat stiffener wall structure. In order to study the influence of Z-pin volume fraction, Z-pin diameter and Z-pin reinforcing region length on the performance of hat stiffener wall structure polymer composites, the samples reinforced by Z-pin with different parameters are prepared and tested under three-point bending load. The Z-pin reinforcing mechanism and samples' failure mechanism are analyzed. The results show that the bending property of hat stiffener wall structures reinforced by Z-pin is improved with the increase of Z-pin volume fraction due to the bridging role of Z-pin, and the damage caused by Z-pin inserting increases. When the volume fraction of Z-pin is 2.6%, the bending peak load reaches the maximum value 6.1 kN through theoretical analysis. The effect of the diameter of Z-pin on the bending load of stiffener wall structures is not obvious. When the length of the Z-pin reinforcing region is 48% of the total length, the bending peak load of hat stiffener wall structure reinforced by Z-pin equals the bending peak load of samples with 100% Z-pin inserting length.

Key words: polymer composites, hat stiffener, Z-pin, joint performance, three-point bending

CLC Number:

V414.8
TB332

LI Wen, LI Yong, HUAN Dajun, CHU Qiyi, XIAO Jun. Bending performance of composite single hat stiffener wall structure reinforced by Z-pin[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(12): 3843-3852.

References

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Bending performance of composite single hat stiffener wall structure reinforced by Z-pin

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