非热压罐预浸料层间滑移特性表征与建模

doi:10.7527/S1000-6893.2024.30995

Abstract

Abstract:

In the hot diaphragm forming process of double-curved complex components using out-of-autoclave prepreg， defects such as wrinkling and buckling often occur. One of the main mechanisms behind these defects is the restriction of inter-ply slipping. In the hot diaphragm preforming process， factors influencing inter-ply slipping include temperature， normal pressure， and relative sliding velocity. Based on the pull-through test principle， this paper designs a set of inter-ply slipping test systems for evaluating the inter-ply slipping properties of out-of-autoclave prepreg. The effects of temperature， normal pressure， and sliding velocity on inter-ply slipping are analyzed， and a mechanical analytical model describing its inter-ply slipping behavior is developed. This model can accurately predict the inter-ply slipping behavior as a function of relative slip displacement under different process parameter conditions. The good agreement between model predictions and experimental data validates the effectiveness of the model.

Key words: out-of-autoclave prepreg, double diaphragm preforming, inter-ply slipping/friction, model construction

CLC Number:

V258

Feng WANG, Lidong WANG, Yaxin FENG, Xuanming ZHANG, Xiangyun ZHANG. Characterization and modeling of inter-ply slipping of out-of-autoclave prepreg[J]. Acta Aeronautica et Astronautica Sinica, 2025, 46(8): 430995.

Figures/Tables 13

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Table 1

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位置	a	b	表达式
硬化点	3 376.763	0.151	μ=3 376.763H+0.151
相对位移10 mm	3 772.287	0.166	μ=3 772.287H+0.166
相对位移20 mm	4 338.312	0.171	μ=4 338.312H+0.171

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Characterization and modeling of inter-ply slipping of out-of-autoclave prepreg

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