新型零泊松比类蜂窝结构面内非线性刚度研究  

Study on the In-plane Nonlinear Stiffness of a Novel Zero Poisson's Ratio Quasi-honeycomb Structure

作　　者：廖学知 王洪波 李宝玉[1] 赵晓宁[1] LIAO Xuezhi;WANG Hongbo;LI Baoyu;ZHAO Xiaoning(China Academy of Launch Vehicle Technology,Beijing,100076;China Aerospace Science and Technology Co.Ltd,Beijing,100048)

机构地区：[1]中国运载火箭技术研究院,北京100076 [2]中国航天科技集团有限公司,北京100048

出　　处：《导弹与航天运载技术（中英文）》2024年第2期1-6,16,共7页Missiles and Space Vehicles

基　　金：国家自然科学基金联合基金项目(U20B200071)。

摘　　要：几何非线性刚度研究对变形飞行器结构大变形的应用具有重要意义。为研究具有正弦波纹壁的零泊松比类蜂窝结构面内大变形时的非线性力学行为,基于非线性梁理论,考虑几何非线性建立了大变形下的非线性力学模型。利用有限元仿真验证了理论分析方法的正确性,通过参数分析讨论了几何参数对等效应力-应变曲线的影响。结果表明,随着应变的增加,结构的几何非线性造成结构的等效拉伸刚度增大;应力-应变曲线受波纹度、蜂窝角、厚度比的影响较大,受高度比影响不明显。The geometrically non-linear stiffness response of morphing aircraft structures is crucial for applications with large deformations.In order to study the nonlinear mechanical behavior of zero Poisson's ratio honeycomb structure with sinusoidal corrugated walls during large deformation in plane,a nonlinear mechanic model with consideration for geometric nonlinear is established based on nonlinear beam theory.It is verified by comparison with non-linear structural analysis with FEM.The stress-strain relationships with different parameters are obtained.The results show that the geometric nonlinear increases the equivalent stiffness with the increase in strain,and the stress-strain curves are greatly affected by corrugation ratio,thickness ratio,and inclination angle,but not by height ratio.

关 键 词：蜂窝结构 波纹结构 几何非线性 力学性能 零泊松比 

分 类 号：TB332[一般工业技术—材料科学与工程] V47[航空宇航科学与技术—飞行器设计]