反对称铺设的单曲率椭圆形壳结构双稳态性能研究

Research on the bistable behavior of the anti-symmetric singly curved elliptical shell

通过垂直于圆柱壳方向的圆柱截取反对称铺设的双稳态圆柱壳结构的方法,可得到一种新型的单曲率椭圆形双稳态壳结构,此结构具有伸展和卷曲两种稳定状态.通过最小势能原理对双稳态椭圆形壳结构进行理论研究,得到其卷曲半径理论解,并与有限元模拟结果进行对比来研究不同参数,包括截取半径、圆柱壳的初始半径、铺设层数和铺设角度等对椭圆形壳结构的双稳态特性的影响.在研究双稳态椭圆形壳结构的过程中,通过对截取半径、圆柱壳的初始半径、铺设层数和铺设角度等参数的不同设计,可以得到其不同的双稳态形状,可指导新型的双稳态椭圆形壳结构的制备及应用.

A new type of bistable elliptical shell can be obtained by cutting out the cylindrical shell by another vertical-direction cylindrical.The new bistable elliptical shell also has two stable states including the extended state and coiled state.The coiled-up radii of the second stable state can be achieved by the minimum potential method in the theoretical analysis.Compared with the results of the numerical simulation,the influencing factors including the cutting out radius,initial mid-plane transverse radius,number of plies and ply angle,are studied on the bistable behavior of the bistable elliptical shell.During research of the bistable elliptical shell,the different shapes of bistable elliptical shell can be achieved from the different design of the cutting out radius,initial mid-plane transverse radius,number of plies and ply angle,which can be used to guide the manufacture and application of the bistable elliptical shell.