X-Cor夹层结构的平压性能

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.