Non-Fourier heat conduction induced thermal shock fracture behavior of multi-crack auxetic honeycomb structures  

作　　者：Junsong HU Baoling WANG Yang YANG Dong XIE 

机构地区：[1]School of Civil Engineering,University of South China,Hengyang 421001,Hunan Province,China [2]Key Lab of Hunan for the Technologies of Energy Conservation in Prefabricated Buildings,Hengyang 421001,Hunan Province,China [3]School of Science,Harbin Institute of Technology,Shenzhen,Shenzhen 518055,Guangdong Province,China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2024年第12期2093-2112,共20页应用数学和力学（英文版）

基　　金：Project supported by the Basic and Applied Research Project from the National Natural Science Foundation of Guangdong Province of China (No. 2023A1515012641)。

摘　　要：The investigation of non-Fourier thermal shock fracture behavior in multicrack auxetic honeycomb structures(HSs) is presented. By employing a non-Fourier heat conduction model, the corresponding temperature and thermal stress fields are established. Subsequently, a thermal stress intensity factor(TSIF) model for the auxetic HSs,accounting for multi-crack interactions, is developed. Finally, using the fracture-based failure criterion, the non-Fourier multi-crack critical temperature of the auxetic HSs is determined. This investigation thoroughly examines the effects of the non-Fourier effect(NFE), auxetic property, crack spacing, and crack location on the thermal shock fracture behavior of the auxetic HSs. Results indicate that a stronger NFE leads to weaker thermal shock resistance in auxetic HSs. Regardless of the presence of the NFE, the auxetic property consistently increases the multi-crack critical temperature of the HSs.Additionally, the interaction of multi-crack inhibits thermal shock crack propagation in HSs.

关 键 词：non-Fourier effect(NFE) auxetic honeycomb structure(HS) multi-crack thermal shock fracture 

分 类 号：O343[理学—固体力学]