封严板结构分析理论与力学行为研究  

IMPROVED THEORY FOR SEAL PLATE AND ANALYSIS OF MECHANICAL BEHAVIORS

作　　者：刘磊 周杰 吴振 LIU Lei;ZHOU jie;WU Zhen(School of Aeronautics,Northwestern Polytechnical University,Xi'an 710072,China;First Aircraft Design Institute of Aviation Industry,Xi'an 710089,China;National Key Laboratory of Strength and Structural Integrity,Xi'an 710065,China)

机构地区：[1]西北工业大学航空学院,西安710072 [2]航空工业第一飞机设计研究院,西安710089 [3]强度与结构完整性全国重点实验室,西安710065

出　　处：《力学与实践》2025年第1期24-30,共7页Mechanics in Engineering

摘　　要：发展了高阶梯度理论,通过与已发表的结果和三维有限元解对比,验证了本文理论模型的准确性和高效性。通过分析功能梯度结构力学行为后发现,使用合适的分布构型可以显著提升封严结构的面内刚度和弯曲刚度。此外,提高碳纳米管体积分数也可有效提高功能梯度结构刚度。本文为碳纳米管增强封严结构力学行为分析提供了准确高效理论模型,为合理使用碳纳米管增强封严结构提供设计方案。This work proposes a higher-order functionally graded theory.By comparing with the published results and three-dimensional finite element results,accuracy and efficiency of the proposed model have been verified.Through analyzing mechanical behaviors of the functionally graded structures,it is found that in-plane stiffness and bending stiffness of seal plate can be significantly improved by using a reasonable distributing profile of the CNTs.In addition,stiffness of the functionally graded structures can be further improved by improving the volume fraction of the CNTs.As a result,an accurate and efficient model has been presented for analysis of mechanical behaviors,which can serve for structural design of aircraft seal plate.

关 键 词：封严板 高阶理论 碳纳米管 功能梯度 解析解 

分 类 号：O343.8[理学—固体力学]