复合材料科学与工程Issue(11)：34-42,9.DOI:10.19936/j.cnki.2096-8000.20241128.004
复合材料正弦型波纹板的等效刚度
Equivalent stiffness of composite sinusoidal corrugated panels
摘要
Abstract
Based on the homogenization theory of composites,carbon fiber reinforced polymer(CFRP)sinu-soidal corrugated panels were equivalent to orthogonal anisotropic plate.According to the principle of strain energy conservation,a method for each stiffness component in the equivalent orthogonal anisotropic plate stiffness matrix was established.Using the finite element method,a representative element model of composite sinusoidal corrugated panels was established.Based on the constitutive equation of laminates,six boundary conditions were constructed to verify the theoretical method of stiffness components.The verification shows that the theoretical results have good consistency with the finite element simulation results.The influence of amplitude and wavelength,two geometric pa-rameters controlling the shape of sinusoidal corrugated panels,on the stiffness of the corrugated panels was studied using a validated stiffness method.The equivalent stiffness of a corrugated panel was compared with the stiffness of its laminated plate.The research results show that the influence of amplitude and wavelength on the stiffness compo-nent of corrugated panels is nonlinear;compared to laminated plates,the tensile stiffness of corrugated direction is significantly reduced,while the bending stiffness in the vertical corrugated direction is significantly increased.关键词
波纹板/等效刚度/复合材料/均质化/有限元Key words
corrugated panel/equivalent stiffness/composites/homogenization/finite element analysis分类
通用工业技术引用本文复制引用
汪厚冰,屈天骄,成李南,魏景超,李新祥,朱强..复合材料正弦型波纹板的等效刚度[J].复合材料科学与工程,2024,(11):34-42,9.基金项目
民机科研项目(MJ25-3N21) （MJ25-3N21）
