Damage evolution analysis of C/SiC screwed/bonded hybrid joints based on in-situ micro-CT technique

Li, Bingyao; Ge, Jingran; Wu, Zhenqiang; Liu, Xiaodong; Zhang, Binbin; Zhao, Shuwei; Wu, Zengwen; Liang, Jun

doi:10.1016/j.compositesa.2024.108417

Composites Part A: Applied Science and Manufacturing

2024

DOI: 10.1016/j.compositesa.2024.108417

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Damage evolution analysis of C/SiC screwed/bonded hybrid joints based on in-situ micro-CT technique

Bingyao Li,

Jingran Ge,

Zhenqiang Wu

et al.

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An Efficient Strength Evaluation Method Based on Shell-Fastener Model for Large Hybrid Joint Structures of C/SiC Composites

Fu,

Chen,

Wang

et al. 2024

Materials

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C/SiC composites are widely used in aerospace thermal structures. Due to the high manufacturing complexity and cost of C/SiC composites, numerous hybrid joints are required to replace large and complex components. The intricate contact behavior within these hybrid joints reduces the computational efficiency of damage analysis methods based on solid models, limiting their effectiveness in large-scale structural design. According to the structure characteristic, a fractal contact stiffness model considering bonded behaviors is established in this paper. By introducing this model, it is proved that the bonded layer can affect the interface strength between plates but not the bearing strength of the specimen for the bolt/bonded hybrid joint structure. Furthermore, by introducing the strength envelope method, this paper overcomes the problem wherein the shell-fastener model cannot accurately describe the complex stress field. Validation through experimental comparison confirms that this approach can accurately predict both the failure mode and strength of multi-row hybrid joint structures in C/SiC composites at a detailed level with an error of 5.4%, including the shear failure of bolts. This method offers a robust foundation for the design of large-scale C/SiC composite structures.

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An Efficient Strength Evaluation Method Based on Shell-Fastener Model for Large Hybrid Joint Structures of C/SiC Composites

Fu,

Chen,

Wang

et al. 2024

Materials

View full text Add to dashboard Cite

show abstract

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Damage evolution analysis of C/SiC screwed/bonded hybrid joints based on in-situ micro-CT technique

Cited by 1 publication

References 29 publications

An Efficient Strength Evaluation Method Based on Shell-Fastener Model for Large Hybrid Joint Structures of C/SiC Composites

An Efficient Strength Evaluation Method Based on Shell-Fastener Model for Large Hybrid Joint Structures of C/SiC Composites

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