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Design and additive manufacturing of bionic hybrid structure inspired by cuttlebone to achieve superior mechanical properties and shape memory function

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International Journal of Extreme Manufacturing 2024年第5期6卷 189-206页

作者： Luhao Yuan Dongdong Gu Xin Liu Keyu Shi Kaijie Lin He Liu Han Zhang Donghua Dai Jianfeng Sun Wenxin Chen Jie Wang Jiangsu Provincial Research Center for Laser Additive Manufacturing of High-Performance Components College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsYudao Street 29Nanjing 210016People’s Republic of China

Lightweight porous materials with high load-bearing,damage tolerance and energy absorption(EA)as well as intelligence of shape recovery after material deformation are beneficial and critical for many applications,***,automobiles,electronics,*** produced in the cuttlefish has evolved vertical walls with the optimal corrugation gradient,enabling stress homogenization,significant load bearing,and damage tolerance to protect the organism from high external pressures in the deep *** work illustrated that the complex hybrid wave shape in cuttlebone walls,becoming more tortuous from bottom to top,creates a lightweight,load-bearing structure with progressive *** mimicking the cuttlebone,a novel bionic hybrid structure(BHS)was proposed,and as a comparison,a regular corrugated structure and a straight wall structure were *** types of designed structures have been successfully manufactured by laser powder bed fusion(LPBF)with NiTi *** LPBF-processed BHS exhibited a total porosity of 0.042% and a good dimensional accuracy with a peak deviation of 17.4μ*** analysis indicated that the LPBF-processed BHS had a strong(001)crystallographic orientation and an average size of 9.85μ*** analysis revealed the LPBF-processed BHS could withstand over 25000 times its weight without significant deformation and had the highest specific EA value(5.32 J·g^(−1))due to the absence of stress concentration and progressive wall failure during *** compression testing showed that LPBF-processed BHS possessed superior viscoelastic and elasticity energy dissipation ***,the uniform reversible phase transition from martensite to austenite in the walls enables the structure to largely recover its pre-deformation shape when heated(over 99% recovery rate).These design strategies can serve as valuable references for the development of intelligent components that possess high mechanical efficiency and shap

关键词： additive manufacturing laser powder bed fusion bionic structure cuttlebone mechanical properties shape memory function

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A novel snail-inspired bionic design of titanium with strontium-substituted hydroxyapatite coating for promoting osseointegration

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Journal of Materials Science & Technology 2021年第20期79卷 35-45页

作者： Zhen Geng Xueping Li Luli Ji Zhaoyang Li Zhenduo Cui Jing Wang Jingyuan Cui Xianjin Yang Changsheng Liu Key Laboratory for Ultrafine Materials of Ministry of Education East China University of Science and TechnologyShanghai200237China Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and EngineeringTianjin UniversityTianjin300350China Engineering Research Center for Biomedical Materials of the Ministry of Education East China University of Science and TechnologyShanghai200237China The State Key Laboratory of Bioreactor Engineering East China University of Science and TechnologyShanghai200237China Frontiers Science Center for Materiobiology and Dynamic Chemistry East China University of Science and TechnologyShanghai200237China

As the population ages,more and more people are suffering from osteoarthritis(OA),resulting in an increasing requirement for joint *** modification to improve the topology and composition of the implants has been proved to be an effective way to improve the primary stability and long-term success rate of joint *** this work,a bionic micro/nano-structure accompanied with a strontium-substituted hydroxyapatite(SrHA)coating was fabricated on titanium(Ti)surface via electrochemical corrosion,ultrasonic treatment,and hydrothermal deposition *** vitro study demonstrated that the bionic structure and the bioactive apatite could synergistically increase the expressions of integrin-related gene(ITGα5β1)and osteoblastic genes(Col-I and OCN),and thus promote osteoblast *** addition,owing to the anti-bone resorption property of Sr^(2+),the coating could effectively inhibit osteoclast differentiation and *** a word,the prepared samples not only promoted osteogenesis but also inhibited *** in vivo experiment via a rabbit model found that the bionic structured surface provided the pore for new bone ingrowth,which was beneficial to the mechanical interlocking between the implant and ***,the bionic structure and bioactive SrHA coating had a synergistic effect on promoting bone formation,osseointegration,and bone-implant bonding *** study therefore presented a new strategy to fabricate bio-functionalized Ti-based implants for potential application in orthopedics field.

关键词： bionic structure Bioactive apatite Osteoclast activity Osseointegration Bone-implant bonding strength

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Nonlinear Vibration Isolation of Spacecraft System by a bionic Variable-Stiffness Device Enhanced by Electromagnetic Component

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Acta Mechanica Solida Sinica 2023年第6期36卷 921-932页

作者： Zeyu Chai Xuyuan Song Jian Zang Yewei Zhang College of Aerospace Engineering Shenyang Aerospace UniversityShenyang 110136China

This study addresses the modified bionic vibration isolation technology by introducing the electromagnetic system to simulate biological damping *** has been proven effective in improving the vibration *** assuming the spacecraft-adapter system as a two-degree-of-freedom system,an excellent simplified model can be *** novel bionic vibration isolation device(ABVS-EMVI),which combines an active bionic variable-stiffness device(ABVSVI)with the electromagnetic system,is proposed for the purpose of isolating vibration and harvesting energy at the same *** dynamic equations of the spacecraft-adapter system with ABVS-EMVI are obtained using the Taylor expansion within the framework of the Lagrange equation,and the harmonic balance method is introduced to acquire the amplitude and voltage response of the *** results indicate that the electromagnetic system can enhance the vibration isolation performance and provide energy harvesting *** confirming the ability of ABVS-EMVI to deal with different forms and amplitudes of excitation,the performance of vibration isolation and energy harvesting is investigated in terms of various parameters,and several new conclusions have been drawn.

关键词： bionic structure Electromagnetic system Vibration isolation Energy harvesting

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Preparation of bionic TiO2 structure Using Aquatic Plants as Template

Preparation of Bionic TiO2 Structure Using Aquatic Plants as...

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中国材料大会2012

作者： Zhigang Chen Chengbao Liu Junchao Qian Feng Chen Cheng Gu Juanning Ma Ping Li Jiangsu Key Laboratory for Environment Functional Materials Suzhou University of Science and Technology Department of Chemistry and Bioengineering Suzhou University of Science and Technology Jiangsu Key Laboratory of Material Tribology Jiangsu University

ISBN: (纸本)9783037856062;3037856068

The bionic structure nanoporous TiO2 materials were prepared using aquatic plants as biological templates. The X-ray diffraction （XRD）, field emission scanning electron microscopy （FESEM）, high resolution transmission electron microscopy （HRTEM）, nitrogen adsorption method and ultraviolet-visible light spectrometer were employed to characterize the structure of samples and the degradation performance of methylene blue solution under the visible light. The results showed that TiO2 sample inherited the porous structure of original template. Such bionic material was composed of ultra-thin piece layers which were full of TiO2 nano-particles with size of about 10 nm. The product was studded with piled pores which had a few to dozens of nano aperture. The material was doped with a small number of bionic legacy elements which can enhance the absorption of 400-800 nm range of the visible light, thus the bionic nanoporous TiO2 materials had better photocatalytic degradation effects of methylene blue solution in the sun.

关键词： Titania Biological mineralization bionic structure Nanoporous Degradation performance.

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A large-area bionic skin for high-temperature energy harvesting applications

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Nano Research 2023年第7期16卷 10245-10255页

作者： Zhaojun Liu Bian Tian Yao Li Jiaming Lei Zhongkai Zhang Jiangjiang Liu Qijing Lin Chengkuo Lee Zhuangde Jiang State Key Laboratory for Mechanical Manufacturing Systems Engineering School of Mechanical EngineeringXi’an Jiaotong UniversityXi’an 710049China Department of Electrical&Computer Engineering National University of SingaporeSingapore 117576Singapore Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing Yantai 265503China

For the large amount of waste heat wasted in daily life and industrial production,we propose a new type of flexible thermoelectric generators(F-TEGs)which can be used as a large area bionic skin to achieve energy harvesting of thermal *** reference to biological structures such as pinecone,succulent,and feathers,we have designed and fabricated a biomimetic flexible TEG that can be applied in a wide temperature range which has the highest temperature energy harvesting capability *** laminated free structure of the bionic F-TEG dramatically increases the efficiency and density of energy *** F-TEGs(single TEG only 101.2 mg in weight),without an additional heat sink,demonstrates the highest output voltage density of 286.1 mV/cm^(2)and the maximum power density is 66.5 mW/m^(2) at a temperature difference of nearly 1000℃.The flexible characteristics of F-TEGs make it possible to collect the diffused thermal energy by flexible attachment to the outer walls of high-temperature pipes and vessels of different diameters and *** work shows a new design and application concept for flexible thermal energy collectors,which fills the gap of flexible energy harvesting in high-temperature environment.

关键词： bionic structure high-temperature flexible thermoelectric generators(TEGs)

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The Lightweight Design of Low RCS Pylon Based on Structural bionics

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Journal of bionic Engineering 2010年第2期7卷 182-190页

作者： Hongjie Jiao,Yidu Zhang,Wuyi Chen Mechanical Engineering Design Centre,Beihang University,Beijing 100191,P.R.China [a] Mechanical Engineering Design Centre Beihang University Beijing 100191 P. R. China

A concept of Specific structure Efficiency (SSE) was proposed that can be used in the lightweight effect evaluation *** main procedures of bionic structure design were introduced *** parameter relationship betweenhollow stem of plant and the minimum weight was deduced in *** order to improve SSE of pylons, the structural characteristicsof hollow stem were investigated and *** pylon was designed based on analogous biological *** finite element method based simulation, the displacements and stresses in the bionic pylon were comparedwith those of the conventional *** show that the SSE of bionic pylon is improved ***, dynamic andelectromagnetism tests were carried out on conventional and bionic *** weight, stress, displacement and Radar CrossSection (RCS) of both pylons were *** results illustrate that the SSE of bionic pylon is markedly improvedthat specific strength efficiency and specific stiffness efficiency of bionic pylon are increased by 52.9% and 43.6% *** RCS of bionic pylon is reduced significantly.

关键词： lightweight design specific structure efficiency low RCS pylon bionic structure

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Bio-inspired Attachment Mechanism of Dynastes Hercules:Vertical Climbing for On-Orbit Assembly Legged Robots

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Journal of bionic Engineering 2024年第1期21卷 137-148页

作者： Yuetian Shi Xuyan Hou Zhonglai Na Jie Zhou Nan Yu Song Liu Linbo Xin Guowei Gao Yuhui Liu School of Mechatronics Engineering Harbin Institute of TechnologyHarbin 150001China

With the increasing size of space facilities,on-orbit assembly requires robots to move on different heights of *** paper proposes a bio-inspired attachment mechanism for robot feet to enable climbing on different heights of *** by the attachment and grasping abilities of Dynastes Hercules,we utilize its foot microstructures,such as microhooks and setae,to achieve efficient contact and firm grip with the *** morphology and arrangement of these structures can inspire the design of robot feet to improve their grasping and stability *** study the biological structure of Dynastes Hercules,design and optimize the bio-inspired structure,analyze the influence of various factors from theoretical and experimental perspectives,and verify the feasibility of the scheme through *** propose an ideal climbing strategy that provides useful reference for robot applications in ***,the influence laws of various factors in this paper can be applied to robot foot design to improve their operation ability and stability performance in the space *** bio-inspired mechanism can improve robot working range and efficiency,which is critical for on-orbit assemblyin space.

关键词： Space assembly robot Truss climbing bionic structure Dynastes Hercules tarsus

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Finite Element Simulation Analysis of a Novel 3D-FRSPA for Crawling Locomotion

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Computer Modeling in Engineering & Sciences 2024年第5期139卷 1401-1425页

作者： Bingzhu Wang Xiangrui Ye College of Mechanics and Materials Hohai UniversityNanjing211100China Department of Fundamental Ma’anshan UniversityMa’anshan243100China

A novel three-dimensional-fiber reinforced soft pneumatic actuator(3D-FRSPA)inspired by crab claw and human hand structure that can bend and deform independently in each segment is *** has an omni-directional bending configuration,and the fibers twined symmetrically on both sides to improve the bending performance of *** this paper,the static and kinematic analysis of 3D-FRSPA are carried out in *** effects of fiber,pneumatic chamber and segment length,and circular air chamber radius of 3D-FRSPA on the mechanical performance of the actuator are discussed,*** soft mobile robot composed of 3D-FRSPA has the ability to ***,the crawling processes of the soft mobile robot on different road conditions are studied,respectively,and the motion mechanism of the mobile actuator is *** numerical results show that the soft mobile robots have a good comprehensive performance,which verifies the correctness of the *** work shows that the proposed structures have great potential in complex road conditions,unknown space detection and other operations.

关键词： 3D-FRSPA bionic structure theoretical modeling crawling application obstacle avoidance analysis numerical investigation

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Crashworthiness Design and Multi-Objective Optimization for Bio-Inspired Hierarchical Thin-Walled structures

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Computer Modeling in Engineering & Sciences 2022年第5期131卷 929-947页

作者： Shaoqiang Xu Weiwei Li Lin Li Tao Li Chicheng Ma School of Transportation and Vehicle Engineering Shandong University of TechnologyZibo255049China School of Mathematics and Statistics Shandong University of TechnologyZibo255049China

Thin-walled structures have been used in many fields due to their superior mechanical *** this paper,two types of hierarchical multi-cell tubes,inspired by the self-similarity of Pinus sylvestris,are proposed to enhance structural energy absorption *** finite element models of the hierarchical structures are established to validate the crashworthiness performance under axial dynamic *** theoreticalmodel of themean crushing force is also derived based on the simplified super folded element *** finite element results demonstrate that the energy absorption characteristics and deformation mode of the bionic hierarchical thin-walled tubes are further improved with the increase of hierarchical *** can be also obtained that the energy absorption performance of corner self-similar tubes is better than edge self-similar ***,multiobjective optimization of the hierarchical tubes is constructed by employing the response surface method and genetic algorithm,and the corresponding Pareto front diagram is *** research provides a new idea for the crashworthiness design of thin-walled structures.

关键词： bionic structure crashworthiness design hierarchical tube multi-objective optimization

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Drag reduction capacity of multi-scale and multi-level riblet in turbulent flow

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Biosurface and Biotribology 2024年第1期10卷 7-15页

作者： Dengke Chen Wenhao Li Yichen Zhao Jinhai Liu Xianxian Cui Zehui Zhao Xiaolin Liu Huawei Chen College of Transportation Ludong UniversityYantaiShandongChina School of Mechanical Engineering and Automation Beihang UniversityBeijingChina Advanced Innovation Center for Biomedical Engineering Beihang UniversityBeijingChina

For high-speed moving objects,drag reduction has been a prolonged major *** address this problem,passive and negative strategies have been proposed in the preceding *** integration of creatures and nature has been continuously perfected during biological *** structure characteristics,material properties,and special functions of marine organisms can provide inexhaustible inspirations to solve this intractable problem of drag ***,a simple and low-cost laser ablation method was proposed.A multi-scale and multi-level riblet(MSLR)surface inspired by the denticles of the sharkskin was fabricated by controlling the density of the laser path and ablation *** morphology and topographic features were characterised using an electron microscope and a scanning white-light interfering ***,the drag reduction capacity of the bionic riblet surface was measured in a circulating water ***,the mechanism of drag reduction was analysed by the computational fluid dynamics(CFD)*** results show that the MSLR surface has a stable drag reduction capacity with an increase in Reynold(Re)number which was contributed by high-low velocity stripes formed on the MSLR *** study can provide a reference for fabricating spatial riblets with efficient drag reduction at different values of Re and improving marine antifouling.

关键词： BIOMIMICS bionic structure DRAG REDUCTION

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