Multilevel Micro Structures of the Clam Make the Sealing Even Tighter  

作　　者：Daobing Chen Xiaolong Zhang Junqiu Zhang Zhiwu Han Ruteng Wang Zhen Lin Yifeng Lei Longjian Xue Sheng Liu 

机构地区：[1]The Institute of Technological Science,Wuhan University,Wuhan,430072,China [2]School of Power and Mechanical Engineering,Wuhan University,Wuhan,430072,China [3]The Key Laboratory of Bionic Engineering(Ministry of Education),Jilin University,Changchun,130022,China [4]Institute of Structured and Architected Materials,Liaoning Academy of Materials,Shenyang,110167,China

出　　处：《Journal of Bionic Engineering》2024年第3期1442-1452,共11页仿生工程学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(52105296,51973165 and 62161160311);the Fundamental Research Funds for the Central Universities(2042022kf1220);Open Fund of Hubei Key Laboratory of Electronic Manufacturing and Packaging Integration(Wuhan University)(EMPI2023020);Large-scale Instrument And Equipment Sharing Foundation of Wuhan University.

摘　　要：Excellent fluid sealing performance is crucial to ensuring the safety of important equipment,especially in aerospace field,such as space capsule and fuel chamber.The frequently opening and closing of the sealing devices is particularly important.Driven by this background,clams(Mactra chinensis)which can open and close their double shells with superior sealing performance,are studied in this work.Here,we show that the clam’s sealing ability is the result of its unique multilevel intermeshing microstructures,including hinge teeth and micro-blocks.These microstructures,which resemble gear teeth,engage with each other when the shell closes,forming a tight structure that prevents the infiltration of water from the outside.Furthermore,the presence of micron blocks prevents the penetration of finer liquids.The simulation results of the bionic end seal components show that the multilevel microstructure has a superior sealing effect.This research is expected to be applied to undersea vehicles that require frequent door opening and closing.

关 键 词：Multilevel micro structures Opening and closing components CLAM SEALING BIONIC 

分 类 号：Q811[生物学—生物工程]