采用试验和有限元方法研究了带口盖加筋复合材料壁板的剪切性能.在带口盖加筋复合材料壁板有限元模型的基础上,去掉口盖,对不带口盖的大开口加筋复合材料壁板进行了有限元模拟分析,以此研究口盖对带口盖加筋复合材料壁板的影响.试验和数值计算结果表明:当达到屈曲载荷时,带口盖加筋复合材料壁板各个区域同步发生屈曲,最终破坏位置位于加强筋条以外的复合材料壁板区域;去掉口盖后,结构的刚度以及承载能力降低,结构的应力集中点以及损伤起始位置均发生变化,破坏时失稳形式无明显变化,均为局部失稳.
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