摘要
以声呐导流罩壳板优化设计为背景,为解决复合材料壳板强度刚度与透声性能冲突,根据导流罩壳板透声性能指标要求,结合材料声管试验数据,提出表层碳纤维增强的浮力芯材夹层平板方案。通过层合板弯曲理论与数值仿真相结合,推导出夹层板结构弯曲刚度系数,并且进一步探讨夹层板表层与芯材对整体弯曲刚度的贡献率;探讨透声型夹层板刚度变化规律,分析表层与芯材对夹层板整体弯曲刚度的影响;同时开展夹层板弯曲刚度试验,验证数值计算结果的合理性。研究结果表明:对于碳纤维增强透声型浮力材料夹层板,表层碳纤维材料对整体弯曲刚度贡献率可达70%以上;夹层板在各参数变化过程中存在刚度优化效率最优点,可用于指导工程设计。
Based on the optimization design of sonar dome plate, in order to solve the conflict between the mechanical property and the sound transmission performance of the composite plate, according to the requirements of the sound transmission performance index of the plate of the sonar dome and the test data of the material acoustic tube, a scheme of the surface carbon fiber reinforced buoyancy core sandwich plate was proposed. Through the combination of the bending theory and numerical simulation of laminated plates, the bending stiffness coefficient of sandwich plate structure was derived. And the contribution rate of surface layer and core material to the overall bending stiffness was further discussed. The stiffness variation law of sound permeable sandwich plate was discussed. The influence of surface layer and core material on the overall bending stiffness of sandwich plate was analyzed. At the same time, the bending stiffness test of sandwich plate was carried out to verify the rationality of the numerical calculation results. The results show that the contribution rate of the surface carbon fiber material to the overall bending stiffness of the sandwich plate is more than 70%. And there is a best efficiency point in the process of the stiffness optimization when parameter changes, which can be used to guide the engineering design.
作者
付晓
梅志远
张二
陈国涛
祝熠
FU Xiao;MEI Zhiyuan;ZHANG Er;CHEN Guotao;ZHU Yi(College of Naval Architecture&Ocean Engineering,Naval University of Engineering,Wuhan 430033,China)
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2021年第10期3448-3455,共8页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(51609252)
海军工程大学自主立项项目(425317S080)。
关键词
碳纤维材料
夹层板
弯曲刚度
优化设计
carbon fiber material
sandwich plate
bending stiffness
optimized design
