为了提高纤维轻量化构件的冰雹载荷防护性能，基于高垂直刚度特性的叶表皮细胞壁仿生结构(bio-ITCLC)，构建基体为涤纶纤维层合材料的仿生夹层结构数值模型，分析了冰雹形状、速度及重复撞击对叶表皮细胞壁仿生夹层结构力学行为及动态损伤的影响。结果表明，撞击接触力随冰雹形状的变化而改变，在相同撞击速度条件下，接触力峰值、初始上升率均随冰雹接触面的增大而提高，但加载时间减小。柱形及锥形冰雹的接触力峰值随撞击速度的增大而线性增长，半球形冰雹的接触力峰值与撞击速度呈抛物线关系。bio-ITCLC仿生夹层结构在柱形、半球形和锥形冰雹下的损伤模式分别为撞击区域屈曲压溃而引起纤维断裂、压痕导致的纤维断裂及基体开裂、仿生芯层与上层面板的分层失效。重复撞击并不改变仿生结构的失效模式，但bio-ITCLC仿生夹层结构的基体分层及累积损伤范围随冰雹重复撞击次数的增加而显著增大。
Abstract
In order to improve the protective performance of fiber lightweight structures subjected to hail impact, the numerical model of bionic sandwich structure was constructed based on the leaf epidermis cell wall bionic structure (bio-ITCLC) with high vertical stiffness. The influence of nose shape, impact velocity and multiple impacts on the mechanical behavior and dynamic damage of bio-ITCLC structures were analyzed. The results showed that the impact force between hail and bio-ITCLC structure was changed with the changing of nose shape of hail. The peak value and raising rate of initial force increased with the contact areal increasing between hail and structure, meanwhile, the loading time of the force was decreasing. The peak value of impact force caused by the cylindrical and conical nose hail linearly increased with the velocity of hail increasing, and the parabolic relation was found between the peak value of impact force generated by the hemispherical nose hail and impact velocity. The main damage modes of bio-ITCLC structures impacted by the cylindrical, conical and cylindrical nose hail were fiber breakage with buckling and crushing, fiber breakage and matrix crack caused indentation, and delamination between bio-core and upper face-sheet, respectively. The damage modes were not changed under the multiple impact of hail, and the delamination of matrix and the area of accumulated damage of the structure were obviously enlarged with the multiple impact increasing.
关键词
bio-ITCLC仿生结构 /
冰雹形状 /
重复撞击 /
损伤模式
{{custom_keyword}} /
Key words
bio-ITCLC bionic structure /
hail shape /
repeated impact /
damage mode
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 刘洋,王富生,岳珠峰.冰雹冲击复合材料层合板失效模式分析与数值模拟[J].振动与冲击,2011,30(09):150-154.
LIU Yang, WANG Fu-sheng, YUE Zhu-feng. Failure Model Analysis and Simulation of Laminated Composite Plate under Hailstone Impacting[J]. Journal of Vibration and Shock, 2011, 30(9): 150-154.
[2] SH Dolati,J Rezaeepazhand,M Shariati. Numerical simulation of hail impact response of hybrid corrugated core sandwich panels[J]. Journal of Reinforced Plastics and Composites, 2019, 38(14).
[3] Kim H and Kedward KT. Modeling hail ice impacts and predicting impact damage initiation in composite structures. AIAA J 2000; 38: 1278–1288.
[4] Kim H, Welch DA and Kedward KT. Experimental investigation of high velocity ice impacts on woven carbon/epoxy composite panels. Composites Part A: Applied Science and Manufacturing,2003; 34: 25–41.
[5] 张笑宇,徐绯,张玉林,李肖成.复合材料蜂窝夹芯板冰雹冲击及多次冲击数值研究[J].航空科学技术,2021,32(12):74-83.
ZHANG Xiaoyu, XV Fei, ZHANG Yulin, LI Xiaocheng. Numerical study on hail impact and multiple impacts of composite honeycomb sandwich panels [J]. Aviation Science and Technology, 2021,32(12):74-83.
[6] Shokofeh Dolati,Abdoulhosein Fereidoon,Ali Reza Sabet. Experimental investigation into glass fiber/epoxy composite laminates subjected to single and repeated high-velocity impacts of ice[J]. Iranian polymer journal,2014,23(6).
[7] 陈新辉. 结构仿生纤维增强复合材料高速冲击损伤和数值模拟研究[D].吉林大学,2022.
CHEN Xinhui. Study on high-speed impact damage and numerical simulation of structural bionic fiber reinforced composites [D]. Jilin University, 2022.
[8] 霍鹏,许述财,范晓文,李建平,杨欣,黄晗.鹿角骨单位仿生薄壁管斜向冲击耐撞性研究[J].爆炸与冲击,2020,40(11):127-138.
HUO Peng, XV Shucai, FAN Xiaowen, LI Jianping, YANG Xin, HUANG Han. Study on oblique impact crashworthiness of bionic thin-walled pipe of Lujiao osteon [J]. Explosion and Impact, 2020,40(11):127-138.
[9] 邢运,杨嘉陵.动物进化的抗冲击策略及其仿生机理研究[J].力学进展,2021,51(02):295-341.
XING Yun, YANG Jialing. Anti-impact strategy of animal evolution and its bionic mechanism [J]. Mechanics Progress, 2021,51(02):295-341.
[10] 韩登安,徐丹,叶仁传,任鹏.冰雹载荷下基于碳纤维增强复合材料的腔棘鱼鳞双螺旋仿生结构的撞击损伤分析[J].高压物理学报,2022,36(04):166-174.
HAN Dengan, XV Dan, YE Renchuan, REN Peng. Impact damage analysis of double helix bionic structure of coelacanth scale based on carbon fiber reinforced composite under hail load [J]. Journal of High Pressure Physics, 2022,36(04):166-174.
[11] ZHENG Jiliang, LI Renfu, XI Zhaojun, etal. Inspired by the growth characteristic of leaf epidermis cell walls: A bio-ITCLC core for supporting a flexible skin with combined morphing applications[J]. Composite Structures, 2021, 255.
[12] 张方, 朱德懋, 张福祥. 动荷载识别的时间有限元模型理论及其应用[J]. 振动与冲击, 1998, 17(2): 1-4．
ZHANG Fang, ZHU Demao, ZHANG Fuxiang. Time finite element model theory of dynamic load identification and its application [J]. Vibration and Shock, 1998,17 (2): 1-4.
[13] 徐丹，韩登安，任鹏，叶仁传.叶表皮细胞壁仿生结构在冰雹作用下的动力学响应[J]. 振动与冲击,2022,41(18):117-124.
XV Dan, HAN Dengan, REN Peng, YE Renchuan. Dynamic response of bionic structure of leaf epidermis cell wall under hail [J]. Vibration and Impact, 2022,41(18):117-124.
[14] 陈星. 基于ABAQUS的冰雹撞击有限元分析[D]. 内蒙古工业大学, 2013.
CHEN Xing. Finite Element Analysis for Hail Impact Dependent on ABAQUS[D]. Inner Mongolia University of Technology,2013.
[15] 薛澄岐,尤志芳.基于航空飞行器冰雹撞击试验的冰雹粒子特性分析[J].东南大学学报(自然科学版),2009,39(06):1165-1168.
XUE Chengqi, You Zhifang. Analysis of hail particle characteristics based on hail impact test of aviation aircraft [J]. Journal of Southeast University (Natural Science Edition),
[16] 王超,杨波,张媛,郭春雨,叶礼裕.冰柱冲击问题的数值仿真分析[J].上海交通大学学报,2022,56(03):368-378.
WANG Chao, YANG Bo, ZHANG Yuan, GUO Chunyu, YE Liyu. Numerical simulation analysis of icicle impact [J]. Journal of Shanghai Jiaotong University, 2022,56(03):368-378.
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}
PDF(2445 KB)
