摘要
通过力学分析得到X-Cor夹层结构平压模量的解析式和计及泡沫对z-pin横向支撑的平压强度预测公式。分析X-Cor夹层结构平压模量的理论值与试验值误差,提出了结构屈曲和z-pin的长度差异引起的刚度折减的修正模型,修正后的夹层结构平压模量的理论值与试验值吻合。理论公式为X-Cor夹层结构的设计提供依据,进而为X-Cor夹层结构新材料在工程领域的应用奠定了基础。
An analytical formula of compression modulus is derived through mechanics analysis. A predicted formula of compressive strength is acquired by considering foam transverse support.Through the analysis on the numerical error between the analytical result and test data of compression modulus,a modified model is proposed concerning the stiffess discount caused by structure buckling and z-pin length diversities.The analytical result of sandwich compression modulus of modified model is in coincidence with test data.The fomula therotically supports X-Cor sandwich design and lays a foundation for the engineering application of X-Cor sandwich.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2012年第2期251-256,共6页
Journal of Nanjing University of Aeronautics & Astronautics
基金
军品配套(JPPT-1146)资助项目
