航空学报2025，Vol.46Issue(21)：88-99,12.DOI:10.7527/S1000-6893.2025.32372
碳纤维编织复合材料激光烧蚀多场耦合建模
Multi-physics coupling modeling of laser ablation process of carbon fiber woven composites
摘要
Abstract
A multi-physics coupling and multi-scale model is established to describe laser damage process of carbon fiber composites.The multi-physics coupling model includes three aspects:Thermal,mechanical and chemical model;the multi-scale model involves the micro-scale of fiber,resin and their chemical reaction products,the meso-scale of fiber yarn,matrix and interface layer,and the macro-scale of laminates.A multi-physics alternating coupling analysis process is established,and finite element method and numerical integration method are combined to solve the governing equations of the model.Taking the laser ablation experiment of a woven composite laminate with 5 plies as an example,the model predictions demonstrate good agreement with the experimental results for both the damage morphology of the laminate and the temperature rise history at the center of the back surface,validating the effective-ness of the model.Simulations of ablation effects in different gaseous environments indicate that higher oxygen con-centrations in the ablation environment lead to more intense oxidation reactions of the carbon fibers and pyrolytic car-bon residue,resulting in more significant damage to the composite material.Thus,to fully exploit the excellent high-temperature mechanical properties of carbon fibers,suppressing oxidation represents a viable approach for enhancing the laser damage resistance of carbon fiber composites.This model and solution method can effectively predict the material damage threshold under various laser irradiation parameters,facilitating in-depth research on the laser dam-age mechanisms of composite materials.It thereby provides a new theoretical analysis methodology for the laser-resistant protection design of aerospace structures.关键词
碳纤维复合材料/激光烧蚀/多场耦合/多尺度模型Key words
carbon fiber composites/laser ablation/multi-physics coupling/multi-scale model分类
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刘清漪,杨旭,张宇,严鹏,陈彦飞,闫楚良..碳纤维编织复合材料激光烧蚀多场耦合建模[J].航空学报,2025,46(21):88-99,12.基金项目
强度与结构完整性全国重点实验室开放基金(ASSIKFJJ202302002) Open Fund of National Key Laboratory of Strength and Structural Integrity(ASSIKFJJ202302002) （ASSIKFJJ202302002）
