金属点阵格栅三明治结构低速冲击响应分析
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摘要
为比较几种正多边形金属点阵格栅三明治结构在低速冲击下动态响应的差异,分析影响三明治结构性能的因素,建立金属点阵格栅三明治板在低速冲击下的有限元模型并计算其力学响应。研究结果表明:表观密度相同的情况下,增加三明治板芯层格栅单元边数,能增强面板与芯层所形成的周边连带效应,提高板的抗冲击性能及整体刚度;低速点冲击荷载作用下,三明治板上下面板厚度比在1~2之间是比较合适的,过大或过小会导致材料利用不足或影响结构安全等问题;在保证足够结构刚度的前提下,应尽可能减小芯层壁厚及高度以提高结构吸能效率。
In order to compare the difference of the dynamic response of several polygonal metal lattice sandwich structures under low velocity impact and analyse the factors that affect the performance of sandwich structure,the finite element model of metal lattice sandwich plate under low velocity impact was established and the mechanical response of metal lattice sandwich plate was calculated. The results show that increasing the number of edge of lattice unit can enhance the joint effect formed by the panels and the core layer,improve the impact resistance and overall stiffness of the sandwich structure with the same apparent density. The thickness ratio of the upper and lower panels of sandwich plate is more appropriate between one to two under low velocity impact,too large or too small may lead to low utilization of material or affect structure safety. On the premise of ensuring enough rigidity of structure,the thickness and height of the core wall should be reduced as far as possible to improve the energy absorption efficiency of the structure.
In order to compare the difference of the dynamic response of several polygonal metal lattice sandwich structures under low velocity impact and analyse the factors that affect the performance of sandwich structure,the finite element model of metal lattice sandwich plate under low velocity impact was established and the mechanical response of metal lattice sandwich plate was calculated. The results show that increasing the number of edge of lattice unit can enhance the joint effect formed by the panels and the core layer,improve the impact resistance and overall stiffness of the sandwich structure with the same apparent density. The thickness ratio of the upper and lower panels of sandwich plate is more appropriate between one to two under low velocity impact,too large or too small may lead to low utilization of material or affect structure safety. On the premise of ensuring enough rigidity of structure,the thickness and height of the core wall should be reduced as far as possible to improve the energy absorption efficiency of the structure.
引文
[1]MEO M,VIGNJEVIC R,MARENGO G.The response of honeycomb sandwich panels under low-velocity impact loading[J].International Journal of Mechanical Sciences,2005,47(9):1301-1325.
[2]赵桂平,卢天健.多孔金属夹层板在冲击载荷作用下的动态响应[J].力学学报,2008,40(2):194-206.ZHAO Guiping,LU Tianjian.Dynamic response of cellular of metallic sandwich plates under impact loading[J].Chinese Journal of Theoretical and Applied Mechanics,2008,40(2):194-206.
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[12]赵剑,谢宗蕻,安学峰,等.蜂窝芯体材料面外等效弹性模量预测与分析[J].航空材料学报,2008,28(4):94-100.ZHAO Jian,XIE Zonghong,AN Xuefeng,et al.Prediction and analysis of equivalent out-of-plane modulus of honeycomb core materials[J].Journal of Aeronautical Materials,2008,28(4):94-100.
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[14]井玉安,韩静涛,果世驹,等.普碳钢蜂窝夹芯板的面外压缩性能[J].北京科技大学学报,2007,29(12):1234-1240.JING Yu'an,HAN Jingtao,GUO Shiju,et al.Out-of-plane compressive characteristics of brazing mild steel honeycomb structures[J].Journal of University of Science and Technology Beijing,2007,29(12):1234-1240.
[15]XUE Z Y,JOHN W H.A comparative study of impulse-resistant metal sandwich plates[J].International Journal of Impact Engineering,2004,30(10):1283-1305.
[16]白中浩,何成,朱峰.复合材料三明治结构板的电磁和冲击性能分析[J].华南理工大学学报(自然科学版),2016,44(9):137-143.BAI Zhonghao,HE Cheng,ZHU Feng.Analysis of electromagnetic and shock wave mitigation capability of a novel sandwich plate with composites[J].Journal of South China University of Technology(Natural Science Edition),2016,44(9):137-143.
[17]IVAN~EZ I,MOURE M M,GARCIA-CASTILLO S K,et al.The oblique impact response of composite sandwich plates[J].Composite Structures,2015,133:1127-1136.
[18]王刚,李喜德.低速冲击下蜂窝铝板的表面变形检测及其吸能特性研究[J].实验力学,2011,26(5):573-581.WANG Gang,LI Xide.On the surface deformation measurement and energy absorption of a honeycomb panel subjected to low-velocity impact[J].Journal of Experimental Mechanics,2011,26(5):573-281.
[19]FOO C C,SEAH L K,CHAI G B.Low-velocity impact failure of aluminium honeycomb sandwich panels[J].Composite Structures,2008,85(1):20-28.
[20]NURICK G N,LANGDON G S,CHI Y,et al.Behaviour of sandwich panels subjected to intense air blast-Part 1:Experiments[J].Composite Structures,2009,91(4):433-444.
[2]赵桂平,卢天健.多孔金属夹层板在冲击载荷作用下的动态响应[J].力学学报,2008,40(2):194-206.ZHAO Guiping,LU Tianjian.Dynamic response of cellular of metallic sandwich plates under impact loading[J].Chinese Journal of Theoretical and Applied Mechanics,2008,40(2):194-206.
[3]刘靖,韩静涛,何美凤.钢质蜂窝夹芯减振板的实验研究[J].塑性工程学报,2006,13(4):82-85.LIU Jing,HAN Jingtao,HE Meifeng.Study of vibration damping carbon steel sandwich panels[J].Journal of Plasticity Engineering,2006,13(4):82-85.
[4]赵丽,童国权,王琦,等.高温合金蜂窝板弯曲性能[J].塑性工程学报,2015,22(3):148-152.ZHAO Li,TONG Guoquan,WANG Qi,et al.Bending performance of high temperature alloy honeycomb panels[J].Journal of Plasticity Engineering,2015,22(3):148-152.
[5]ZHU F,ZHAO L M,LU G X,et al.A numerical simulation of the blast impact of square metallic sandwich panels[J].International Journal of Impact Engineering,2009,36(5):687-699.
[6]程子恒,于渤,倪长也,等.多种三明治结构抗冲击作用下动态性能的比较研究[J].应用力学学报,2014,31(5):746-751.CHENG Ziheng,YU Bo,NI Changye,et al.Comparative study on the dynamic performance of a variety sandwich structures under impact loading[J].Chinese Journal of Applied Mechanics,2014,31(5):746-751.
[7]HARRIS J A,WINTER R E,SHANE G J.Impact response of additively manufactured metallic hybrid lattice materials[J].International Journal of Impact Engineering,2017,104:177-191.
[8]JOHN W H,XUE Z Y.Metal sandwich plates optimized for pressure impulses[J].International Journal of Mechanical Sciences,2005,47(4):545-569.
[9]胡亚峰,顾文彬,刘建青,等.应力波在泡沫铝夹层三明治板中传播规律的数值研究[J].爆破器材,2014,(5):15-20.HU Yafeng,GU Wenbin,LIU Jianqing,et al.Numerical study on propagation of stress wave in aluminum foam sandwiched plates[J].Explosive Materials,2014,(5):15-20.
[10]邓磊,王安稳,毛柳伟,等.方孔蜂窝夹层板在爆炸载荷下的吸能特性[J].振动与冲击,2012,31(17):186-189.DENG Lei,WANG Anwen,MAO Liuwei,et al.Energy absorption characteristics of a square hole honeycomb sandwich plate under blast loading[J].Journal of Vibration and Shock,2012,31(17):186-189.
[11]赵国伟,白俊青,祁玉峰,等.异面冲击下金属蜂窝结构平均塑性坍塌应力模型[J].振动与冲击,2016,35(12):50-54.ZHAO Guowei,BAI Junqing,QI Yufeng,et al.Average plastic collapse stress model of metallic honeycomb structure under out-ofplan impact load[J].Journal of Vibration and Shock,2016,35(12):50-54.
[12]赵剑,谢宗蕻,安学峰,等.蜂窝芯体材料面外等效弹性模量预测与分析[J].航空材料学报,2008,28(4):94-100.ZHAO Jian,XIE Zonghong,AN Xuefeng,et al.Prediction and analysis of equivalent out-of-plane modulus of honeycomb core materials[J].Journal of Aeronautical Materials,2008,28(4):94-100.
[13]WU Y H,LIU Q,FU J,et al.Dynamic crash responses of bio-inspired aluminum honeycomb sandwich structures with CFRP panels[J].Composites Part B Engineering,2017,121:122-133.
[14]井玉安,韩静涛,果世驹,等.普碳钢蜂窝夹芯板的面外压缩性能[J].北京科技大学学报,2007,29(12):1234-1240.JING Yu'an,HAN Jingtao,GUO Shiju,et al.Out-of-plane compressive characteristics of brazing mild steel honeycomb structures[J].Journal of University of Science and Technology Beijing,2007,29(12):1234-1240.
[15]XUE Z Y,JOHN W H.A comparative study of impulse-resistant metal sandwich plates[J].International Journal of Impact Engineering,2004,30(10):1283-1305.
[16]白中浩,何成,朱峰.复合材料三明治结构板的电磁和冲击性能分析[J].华南理工大学学报(自然科学版),2016,44(9):137-143.BAI Zhonghao,HE Cheng,ZHU Feng.Analysis of electromagnetic and shock wave mitigation capability of a novel sandwich plate with composites[J].Journal of South China University of Technology(Natural Science Edition),2016,44(9):137-143.
[17]IVAN~EZ I,MOURE M M,GARCIA-CASTILLO S K,et al.The oblique impact response of composite sandwich plates[J].Composite Structures,2015,133:1127-1136.
[18]王刚,李喜德.低速冲击下蜂窝铝板的表面变形检测及其吸能特性研究[J].实验力学,2011,26(5):573-581.WANG Gang,LI Xide.On the surface deformation measurement and energy absorption of a honeycomb panel subjected to low-velocity impact[J].Journal of Experimental Mechanics,2011,26(5):573-281.
[19]FOO C C,SEAH L K,CHAI G B.Low-velocity impact failure of aluminium honeycomb sandwich panels[J].Composite Structures,2008,85(1):20-28.
[20]NURICK G N,LANGDON G S,CHI Y,et al.Behaviour of sandwich panels subjected to intense air blast-Part 1:Experiments[J].Composite Structures,2009,91(4):433-444.