航空科学技术2026，Vol.37Issue(1)：38-44,7.DOI:10.19452/j.issn1007-5453.2026.01.005
搭接方式对复合材料单钉搭接结构力学性能的影响
Effect of Lap Joint Configuration on the Mechanical Properties of Composite Single-Bolt Lap Joints
摘要
Abstract
As a primary mechanical joining configuration for fuselage panels,the load-bearing capacity of composite material bolted joints directly influences the in-service performance of aircraft.Three kind of composite single bolt joint specimens-symmetric,asymmetric,and symmetric with shims-were designed and manufactured.Experimental investigations were conducted to obtain the load-displacement curves.The results indicate that the single lap joint configuration significantly influences the load-bearing characteristics.The load-bearing performance of asymmetric joints is primarily governed by the thin layer,while the shims reduce the linear structural stiffness,but have minimal impact on ultimate load capacity.A finite element simulation model for analyzing the mechanical properties of single-bolt lap joints was developed,achieving a prediction error within 5％.The failure mechanisms of the joints were discussed,revealing that damage is dominated by fiber compressive failure and matrix compression.The findings of this study provide valuable insights for optimizing the design of aerospace composite lap joint structures.关键词
复合材料/单搭接/破坏模式/力学性能/有限元分析Key words
composites/single-bolt joints/failure mode/mechanical properties/finite element model分类
航空航天引用本文复制引用
张迪,王计真,杨翼飞,郭亚周,张温馨,周晋,刘啸川..搭接方式对复合材料单钉搭接结构力学性能的影响[J].航空科学技术,2026,37(1):38-44,7.基金项目
国家自然科学基金(12402172) （12402172）
航空科学基金(20220041070007,20220036070001) National Natural Science Foundation of China(12402172) （20220041070007,20220036070001）
Aeronautical Science Foundation of China(20220041070007,20220036070001) （20220041070007,20220036070001）
