复合材料加筋板高能量低速冲击损伤特性数值研究

doi:10.19936/j.cnki.2096-8000.20240228.002

复合材料科学与工程 ›› 2024, Vol. 0 ›› Issue (2): 13-19.DOI: 10.19936/j.cnki.2096-8000.20240228.002

复合材料加筋板高能量低速冲击损伤特性数值研究

冯振宇^1,2, 李玲玲^1,2, 邹君^1,2, 解江^1,2, 王计真³, 郭亚周³

1.中国民航大学安全科学与工程学院,天津 300300;
2.民航航空器适航审定技术重点实验室,天津 300300;
3.中国飞机强度研究所,西安 710065

收稿日期:2022-11-14 出版日期:2024-02-28 发布日期:2024-04-22
作者简介:冯振宇(1966—),男,博士,教授,博士生导师,主要从事结构适航审定技术及损伤容限分析技术方面的研究,mhfzy@163.com。
基金资助:
机械结构力学及控制国家重点实验室开放课题(MCMS-E-0522Y03);中央高校基金(3122022099)

Numerical study of high-energy low-velocity impact damage on stiffened composite panel

FENG Zhenyu^1,2, LI Lingling^1,2, ZOU Jun^1,2, XIE Jiang^1,2, WANG Jizhen³, GUO Yazhou³

1. College of Safety Science and Engineering, Civil Aviation University of China, Tianjin 300300, China;
2. Key Laboratory of Civil Aircraft Airworthiness Technology, CAAC, Tianjin 300300, China;
3. Aircraft Strength Research Institute of China, Xi'an 710065, China

Received:2022-11-14 Online:2024-02-28 Published:2024-04-22

摘要/Abstract

摘要： 高能量大面积钝物冲击对复合材料飞机运营安全带来较大的威胁。采用Hashin准则和双线性渐进损伤模型模拟层内损伤,采用Cohesive界面元模拟层间损伤,采用Ogden超弹性材料模型作为橡胶材料本构模型,并进行了模型有效性验证,针对复合材料加筋板开展了高能量软体、硬体低速冲击下的损伤特性数值研究。分别分析了加筋板不同位置在刚性冲头和橡胶冲头高能量低速冲击下的冲击响应和损伤过程,对比研究了在冲击过程中加筋板变形和损伤模式。结果表明,刚性冲击下接触压力较大,局部变形和损伤更严重。橡胶冲击下橡胶变形起到了一定缓冲和分散压力的作用,但接触力峰值与刚性冲击相比高出约23%。冲击位置位于筋条时在刚性冲击下的损伤最严重,损伤主要位于蒙皮、筋条腹板和缘条,在橡胶冲击下损伤主要位于蒙皮背部和筋条腹板。与刚性冲击相比,不同位置橡胶冲击下的损伤较小且几乎外部目视不可见。

关键词: 复合材料加筋板, 高能量冲击, 低速冲击, 橡胶冲击, 损伤特性

Abstract: The high-energy wide-area blunt impact problem is a major threat for the operation safety of composite aircrafts. The Hashin criterion and the bilinear progressive damage model were adopted to simulate the in-plane ply failure, and the cohesive interface elements have been implemented to simulate the delamination. The Ogden hyperelastic material model was used to define the rubber's constitutive behavior. Numerical simulations were carried out to validate the effectiveness of the analysis methods, and then the damage characteristics of stiffened composite panel under high-energy low-velocity rigid and soft impacts were investigated. The impact response and damage process of high-energy low-velocity impact on different locations of the skin by rigid and rubber impactors were analyzed, respectively. The deformation and damage modes of stiffened composite panel during the impact process were compared and studied. The results show that the contact pressure for rigid impacts were larger, which leads to more severe local deformation and damages. The rubber impactor could blunt the impact and reduce the contact pressure, while the peak contact forces were about 23% higher than that of rigid impacts. Damages were most serious under the rigid impact at the stiffeners, in which the damages mainly located at the skin, stiffener webs and flanges, while the damages mainly located at the back of skin and stiffener webs for rubber impact. Compared with the rigid impacts, the impact damages under rubber impacts were less serious and external barely visible.

Key words: stiffened composite panel, high-energy impact, low-velocity impact, rubber impact, damage characteristic

中图分类号:

TB332

冯振宇, 李玲玲, 邹君, 解江, 王计真, 郭亚周. 复合材料加筋板高能量低速冲击损伤特性数值研究[J]. 复合材料科学与工程, 2024, 0(2): 13-19.

FENG Zhenyu, LI Lingling, ZOU Jun, XIE Jiang, WANG Jizhen, GUO Yazhou. Numerical study of high-energy low-velocity impact damage on stiffened composite panel[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(2): 13-19.

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复合材料加筋板高能量低速冲击损伤特性数值研究

Numerical study of high-energy low-velocity impact damage on stiffened composite panel

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