对不同几何尺寸的[0°/90°]正交非对称铺设碳纤维复合材料的双稳态特性进行了研究.在分析正交非对称复合材料双稳态特性产生机理和理论基础上,成功制备了碳纤维/环氧树脂(T700/3234)正交铺设的双稳态试样.对制备固化冷却后产生的圆柱状第一稳态、建立实验平台实现向第二稳态转变过程,经过逆向加载返回至第一稳态的整体稳态间转变总过程进行实验研究,分析稳态曲率半径、面外位移、稳态间转变最大载荷及载荷-位移曲线等的变化规律.%The bi-stable characteristics of [0?90癩 layup orthogonal unsymmetric carbon-fiber composite struc-ture for different geometrical size were studied in this paper. Based on the analysis of the bi-stable mechanism and theoretical method of this kind unsymmetric composite, the carbon-fiber/epoxy resin(T700/3234) speci-mens which own bi-stable properties were fabricated successfully. The total snap processes including curing and cooling to first stable state, snapped from one stable shape to another and back to the first stable is given. The variation law of the coiled-up radius, out-of-plane displacement, maximum snap-through and snap-back loads, and load-displacement curvatures is analyzed finally.
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