以复合材料层合板为面板的夹层板皱屈计算

为分析复合材料夹层板面板的皱屈特性,本文首先讨论了弹性基础上反对称正交铺设层合板的稳定性计算。然后通过假定夹芯的位移模式,使夹芯的变形能与一等效弹簧系统变形能相等,求得夹芯的等效基础系数。最后,提出了一个对称皱屈载荷的计算公式。

Wrinkling Calculation for the Sandwich Laminates Using Composite Lami-nates as Faceplates

In order to analyse the faces behavior of composite sandwich plates, the buckling response is initially discussed for the antisymmetrically laminated cross-ply rectangular plate resting on elastic foundation. Based on the assumed new displacement models, an equivalent spring constant of the core is determined by equating the core strain energy to that stored in an equivalent spring. Finally, an approximate formula is presented for predicting symmetrical wrinkling critical loads.