Effects of Geometrical Characteristics of Suture on Fracture Resistance of Walnut Shell
作者机构：Key Laboratory of Biomechanics and Mechanobiology(Beihang University)Ministry of EducationBeijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijing100083China School of Engineering MedicineBeihang UniversityBeijing100083China
出 版 物：《Journal of Bionic Engineering》 (仿生工程学报（英文版）)
年 卷 期：2023年第20卷第6期
页 面：2732-2741页
核心收录：
学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 08[工学] 09[农学] 0901[农学-作物学] 0836[工学-生物工程] 090102[农学-作物遗传育种]
基 金：This work was supported by the National Natural Science Foundation of China[U2241273,12172034,U20A20390,11827803,11822201] Beijing Municipal Natural Science Foundation the 111 project[B13003] the Fundamental Research Funds for the Central Universities
主 题：Fracture resistance Walnut Suture Bonding strength Numerical simulations Biomechanics
摘 要：Nut shells have good impact and fracture resistance,but many kinds of nut shells have suture structures with low bonding ***,the mechanism of impact and fracture resistance of nut shells as a whole is important to study,particularly given that sutures maintain low bonding *** this study,we investigated the effect of the geometrical characteristics of sutures(morphology,thickness,and number)on the overall fracture resistance of walnuts,based on mechanical tests of C-ring samples,microstructure analysis after cracking,quantitative analysis of suture geometric model,and numerical *** found that the cracking of walnuts was mainly caused by tensile stress,and the bonding strength was approximately 2.48±0.64 *** discovered that the thickness of the suture was 1.55±0.32 times thicker than the shell,which improved the fracture resistance ability by more than 28.4%.The undulating and inclined morphology of the walnut suture also increased the fracture ***,an appropriate suture number reduced the cracking of *** conclusion,our study sheds light on the physiological function of walnut sutures from a biomechanical perspective and provides useful references for designing fracture resistance measures in thin shell structures.
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