Optimization of assembly parameters for composite bolted joints aiming at time-varying bearing reliability improvement

IF 6.3 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2025-03-22 DOI:10.1016/j.compstruct.2025.119113

Qingyuan Lin , Yong Zhao , Yuming Liu , Wei Pan , Yu Ren , Wencai Yu

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引用次数: 0

Abstract

Bolted connections are a common assembly form for composite structures. Different assembly parameters may lead to multiply differences in the strength of composite bolted joints. Low structural reliability is currently a key bottleneck that restricts the performance improvement of composite devices. In this study, the uncertainty characteristics of the washer structure parameters, interface friction coefficients and tightening process parameters under different machining methods, interface treatments and tightening control methods are analyzed through batch experimental tests. Then the data set with assembly parameters as input and structural bearing limit as output is constructed through batch virtual tightening- tensile experiments. The data-driven algorithm is used to construct a fast prediction model of the bearing limit, and the time-varying uncertainty analysis of the bearing limit and the bearing reliability evaluation method are established. Finally, the method is used to realize the bearing reliability improvement by regulating the uncertainty to optimize the assembly parameters. The uncertainties in the assembly parameters of the composite bolted joints obtained through experimental tests in this study can provide a reference for related researches. The established data-driven fast prediction model of bearing limits provides an effective tool for statistical analysis of bearing limits and bearing reliability assessment.

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.