范春浩1, 胡俊山1(
), 杨智勇2, 侯富森1, 陈培林1, 田威1
收稿日期:2025-03-19
修回日期:2025-04-25
接受日期:2025-06-10
出版日期:2025-06-16
发布日期:2025-06-13
通讯作者:
胡俊山
E-mail:hujunshan@nuaa.edu.cn
基金资助:
Chunhao FAN1, Junshan HU1(
), Zhiyong YANG2, Fusen HOU1, Peilin CHEN1, Wei TIAN1
Received:2025-03-19
Revised:2025-04-25
Accepted:2025-06-10
Online:2025-06-16
Published:2025-06-13
Contact:
Junshan HU
E-mail:hujunshan@nuaa.edu.cn
Supported by:摘要:
碳纤维复合材料(CFRP)由于力学性能优异、工艺实施性强等特点,常用来修复受损的航空金属构件,然而由于金属、胶层、补片的物理化学性质差异,成型后在贴补区域往往会引发固化残余应力并产生变形,对贴补结构承载性能造成影响。针对残余应力、固化变形的影响开展研究,设计了钛合金损伤构件CFRP单面贴补修复的拉伸试验,同时建立了从共固化胶接到准静态拉伸的多阶段数值分析方法。通过试验与仿真结果的综合分析,厘清了固化阶段胶层应变演化行为,对比了拉伸阶段应力-应变曲线、损伤失效形式,探究了固化工艺对拉伸性能的影响规律。结果发现,固化过程胶层应变可分为5个阶段,且仿真与试验误差不超过20%;拉伸过程考虑残余应力、固化变形的多阶段模拟方法,与试验所得应力-应变曲线更吻合,极限拉伸应力误差仅为1.39%,且仿真反映的各材料破坏形式与试验相同;在固化工艺方面,减缓升温速率、延长保温时间,有助于补片、胶层固化度提高、模量增大,并且使得承载方向上钛合金母板的拉应力减小、压应力增大,最终令结构表现出更优异的拉伸性能。
中图分类号:
范春浩, 胡俊山, 杨智勇, 侯富森, 陈培林, 田威. 固化残余应力和变形对钛合金损伤构件CFRP单面贴补结构拉伸性能的影响[J]. 航空学报, 2026, 47(3): 431997.
Chunhao FAN, Junshan HU, Zhiyong YANG, Fusen HOU, Peilin CHEN, Wei TIAN. Effects of curing residual stress and deformation on tensile performance of CFRP single-sided patch-repaired titanium alloy damaged components[J]. Acta Aeronautica et Astronautica Sinica, 2026, 47(3): 431997.
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