面向铺放工艺的预浸料剥离仿真与试验验证

doi:10.7527/S1000-6893.2018.22246

Abstract

Abstract: To systematically establish the prepreg peeling model which can characterize the stiffness and tack of the prepreg, a test verification system considering tensile, probe and peeling is constructed. First, the shift cantilever peel device for the prepreg is designed, and the tack and dynamic stiffness of the prepreg with various laying process parameters by the 90° peeling test are measured. A peel simulation model is established. Then, the cohesive zone model is used to quantitatively characterize the tack parameters obtained by the probe test. Next, the orthotropic mechanical parameters of the prepreg are measured by the test, and are input into the peeling model together with the tack parameters obtained from the probe test. Results of simulation of the tack and the stiffness of the prepreg with various process parameters are all in good agreement with the experimental values. The simulation reveals that the phenomenon of off-roller during the peel test will affect the measured value of peeling force; therefore, the phenomenon of off-roller and its mechanism are studied. It was found that the radius of the peel guide roller should be set within 3-7 mm, which can reduce the off-roller degree and improve the accuracy of the peel test. Our research completed systematic determination and characterization of the tack and stiffness of the prepreg, providing some reference for modelling and automatic placement simulation of the prepreg.

Key words: prepreg tack, prepreg stiffness, peel test, probe test, cohesive zones model, finite element method (FEM)

CLC Number:

V258
TB332

PENG Xiao, SHU Zhan, DU Tao, XU Qiang. Peel simulating and test verification of prepreg based on laying process[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(12): 422246-422246.

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Peel simulating and test verification of prepreg based on laying process

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[1]	SHU Zhan, PENG Xiao, LI Fafei, XU Qiang. Cohesive zone model for prepreg tack based on probe test [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(2): 421416-421416.
[2]	Qian Guanliang;Gu Songnian;Jiang Jiesheng. DYNAMIC BEHAVIOUR OF A CANTILEVER BEAM WITH CRACKS [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1989, 10(9): 448-454.