Article
Mechanics
Xinye Cao, Bin Ji, Yiling Lin, Hualin Fan
Summary: This paper presents the design, fabrication, testing, and analysis of a large-scale additively manufactured (AM) metal matrix composite (MMC) lattice truss sandwich cylinder (LTSC). An elastoplastic multi-failure analyzing method is proposed to predict the failure load and pattern of the LTSC. The results provide insights into the practical application of large-scale AM LTSCs in aerospace engineering compared to widely studied carbon fiber reinforced composite LTSCs.
COMPOSITE STRUCTURES
(2023)
Article
Nanoscience & Nanotechnology
Xin Yang, Wenjun Ma, Zhaoyang Zhang, Shifeng Liu, Huiping Tang
Summary: This article utilizes selective laser melting (SLM) to manufacture Ti6Al4V lattice structures with different aspect ratios, and investigates their performance. The results show that the additively manufactured Ti6Al4V lattice material has an ultra-high specific strength, mainly due to high density dislocations and structural optimization.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Qiqi Li, Xichang Li, Liuyu Zhan, Tiefang Zou, Xiaomin Chen, Xianzheng Lu
Summary: A hollow auxetic cylinder lattice structure with tapered three-dimensional reentrant cells and connecting plates is proposed. The compressive performance of the structure is studied using finite element analysis and compression test, revealing excellent energy absorption, negative Poisson's ratio properties, and unique rotational deformation mode during compression. The influences of structural parameters are further investigated, with the maximum rotation angle and minimum negative Poisson's ratio found to be 37.32 degrees and -0.653, respectively. The structure exhibits various functional properties and holds great potential for applications.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Engineering, Mechanical
Dalia Mahmoud, Kassim S. Al-Rubaie, Mohamed A. Elbestawi
Summary: The study tested the manufacturability of gyroids and found that geometric errors and internal defects during the manufacturing process can affect the mechanical properties of metallic lattice structures. Designs with graded porosity showed higher elastic modulus and compressive strength, but lower fatigue strength.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Engineering, Civil
Zhi-jia Zhang, Yong-jing Wang, Lei Huang, Yue Fu, Zi-qiang Zhang, Xin Wei, Ya-guang Sui, Qian-cheng Zhang, Feng Jin
Summary: Quasi-static axial compression performance and failure modes of brazed sandwich cylinders with square honeycomb cores were investigated using a combined approach of experimentally measurement, analytical modeling and numerical simulation. Several analytical models were proposed to estimate the axial compressive properties of sandwich cylinders, and failure maps were constructed accordingly. The theoretical predictions were in agreement with the numerical simulation and experimental results. Additionally, the effects of key geometrical parameters on the performance of sandwich cylinders were systematically explored.
THIN-WALLED STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Ruochen Ding, Jun Yao, Baorui Du, Kailun Li, Maohua Pan, Lu Zhao, Yumeng Guo
Summary: Lattice structure, with characteristics of low density, high specific strength, and high specific stiffness, is suitable for applications in secondary load-bearing components. Research shows that ARCH lattice structure exhibits better flexural properties under Y loading direction, and the relative density has a significant influence on its flexural properties. The Gibson-Ashby equation is established to estimate the flexural properties of lattice structures with different relative densities, providing a theoretical basis and reference for engineering applications.
ADVANCED ENGINEERING MATERIALS
(2021)
Article
Mechanics
Jun Yan, Cuncun Jiang, Zhirui Fan, Qi Xu, Hongze Du, Wei Sun, Guangyuan Wang, Bin Niu
Summary: This study systematically investigates the failure mode of additive manufactured multi-layer lattice sandwich structures under quasi-static compression, revealing a complex failure mechanism. The results provide helpful guidance for the design of multi-layer lattice sandwich structures in practical applications.
INTERNATIONAL JOURNAL OF APPLIED MECHANICS
(2021)
Article
Mechanics
Michelle Tillotson Rudd, David J. Eberlein, W. Allen Waters, Nathaniel W. Gardner, Marc R. Schultz, Chiara Bisagni
Summary: Developing a validated finite element modeling methodology is important for the design and analysis of composite launch-vehicle shell structures. This can be achieved by correlating numerical models with test data and considering as-built features. Understanding the parameters and details required to accurately predict buckling behavior is crucial, especially for critical shells.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Civil
Wen-Tao Qiao, Jun-Jie Zhang, Hai-Ying Zhang, Qian Wang
Summary: This paper presents a new modular structure called dense-steel-column sandwich wall and investigates its axial compression behavior through eight axial compression tests. The results show that the bearing capacity of the wall can be improved by setting diagonal brace or increasing the column width. Finite element analysis models based on the test results are established and the numerical simulation closely matches the test results, demonstrating the correctness of the finite element model. The research findings provide a reference for the engineering application of the dense-steel-column sandwich wall.
Article
Nanoscience & Nanotechnology
Abdulaziz Kurdi, A. K. Basak
Summary: The mechanical properties and deformation behaviour of SLMed Ti6Al4V alloy are influenced by the microstructure and loading direction, resulting in anisotropy. The alloy exhibits higher yield and ultimate compressive strength compared to mill-annealed alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Coatings & Films
Ying Chen, Changmeng Liu, Huaiying Yan, Yongtian Fan, Jiachen Wang, Yinan Cui
Summary: This study demonstrates the capability of nitriding to improve the overall mechanical performance of the 316L stainless steel lattice structure. The effective elastic modulus, compressive proof strength, and energy absorption capacity were found to be improved after conventional gas nitriding. A nitrided layer with a thickness of about 60um was formed on the surface of the nitrided parts, and the lattices with thinner struts were strengthened more due to the higher proportion of the nitrided layer. The embrittlement of the lattices after nitriding can be compensated by adjusting the lattice structure.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Mechanics
H. S. Bharath, Sunil Waddar, Siddappa I. Bekinal, P. Jeyaraj, Mrityunjay Doddamani
Summary: In this study, sandwiches are printed using high density polyethylene (HDPE) skins and syntactic foam core with glass microballoons (GMBs) embedded in HDPE. Increasing GMB content enhances load to buckle and frequency of the printed sandwiches. The natural frequency decreases with higher compressive loads and increases exponentially when the load exceeds critical buckling load.
COMPOSITE STRUCTURES
(2021)
Article
Nanoscience & Nanotechnology
Kai Peng, Gaoshen Cai, Biao Hu, Xina Huang
Summary: This study investigated the effect of pillar size on the mechanical properties of Ti6Al4V lattice fabricated by selective laser melting (SLM). It was found that with increasing pillar size, the difference between actual and designed porosity of the lattice structure first increased and then decreased. Additionally, larger pillar size led to improved plasticity, enabling the lattice structure to withstand higher cyclic loads and exhibit better fatigue performance.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Automation & Control Systems
Alcide Bertocco, Gianluca Iannitti, Antonio Caraviello, Luca Esposito
Summary: This paper investigates the influence of process parameters on the printability of lattice structures using selective laser melting. Different combinations of process parameters were used to print lattice structures made of stainless steel. The best parameter combination was evaluated based on the analysis of geometric, topological, and mechanical properties. The findings of this study are important for the development and application of additive manufacturing technology.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Ming-Wei Wu, Kai Ni, Yang Lei, Xin-Xing Xiong, Yi-Ting Chuang, Quiao-En Lin, Pei Wang, Parthiban Ramasamy, Juergen Eckert
Summary: Selective laser melting (SLM) was utilized to produce CuZrAl metallic glass (MG) scaffolds with combined lattice structures of body-centered cubic and face-centered cubic (F2BCC), and the effects of lattice structures on mechanical behavior were investigated. The results revealed that curved struts remarkably enhanced compressive ductility by 122% and energy absorption by 106%. The presence of curved struts effectively prevented catastrophic shear fracture and delayed fracture occurrence due to the release of strain concentrations. This study demonstrates the potential of improving the ductility and toughness of SLM MG components through appropriate lattice structure design.
Article
Engineering, Aerospace
Hao Wu, Changlian Lai, Fangfang Sun, Ming Li, Bin Li, Weiyi Wei, Debo Liu, Xi Zhang, Hualin Fan
Article
Engineering, Multidisciplinary
Wu Zhen, Ren Xiaohui, Ji Bin, Chen Wanji
INTERNATIONAL JOURNAL FOR MULTISCALE COMPUTATIONAL ENGINEERING
(2018)
Article
Materials Science, Multidisciplinary
Ge Qi, Bin Ji, Li Ma
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2019)
Article
Materials Science, Multidisciplinary
Ren Xiaohui, Wu Zhen, Ji Bin
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2020)
Article
Engineering, Civil
Antao Deng, Bin Ji, Xiang Zhou, Zhong You
THIN-WALLED STRUCTURES
(2020)
Article
Engineering, Multidisciplinary
Wanxin Li, Qing Zheng, Hualin Fan, Bin Ji
Article
Engineering, Mechanical
Bin Ji, Han Han, Renbang Lin, Hao Li
ACTA MECHANICA SINICA
(2020)
Article
Engineering, Mechanical
Antao Deng, Bin Ji, Xiang Zhou
Summary: A new geometric design method based on the generalized Resch patterns is proposed for foldcores, which allows bonding interfaces between the core and skins. A systematic numerical investigation on the mechanical properties of CFRP foldcores is performed using the finite element method, revealing relationships between mechanical properties and geometric parameters. The CFRP foldcores based on generalized Resch patterns outperform other types in terms of stability, compressive and shear stiffness, and energy absorption capacity.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2021)
Article
Engineering, Multidisciplinary
Xinye Cao, Bin Ji, Yongqiang Li, Xiyue An, Hualin Fan, Linda Ke
Summary: Innovative sandwich cylinders with pyramidal lattice truss-cores were designed, printed, tested, and analyzed using selective laser melting (SLM) additive manufacturing (AM) technique. Uniaxial compression tests of two groups of aluminum alloy sandwich cylinders showed failure at facesheet yielding, followed by post-plastic local buckling. A new multi-failure theory was proposed to predict plastic buckling load and provide a hierarchical failure map for optimal design of additively manufactured lattice-core sandwich cylinders.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Mechanics
Liang Cai, Wei Li, Tianyi Hu, Bin Ji, Yucheng Zhang, Tatsuo Sakai, Ping Wang
Summary: This study investigates the fatigue crack growth behaviors of three aluminum alloys under single overload using in-situ optical microscopy testing and in-situ SEM testing. The results show that the shape effect of overload-induced plastic zone leads to a larger crack growth retardation range than previously assumed. Additionally, the crack closure effect and the crack-front plasticity have significant influences on crack growth.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Materials Science, Multidisciplinary
Rui Sun, Wei Li, Yucheng Zhang, Ping Wang, Bin Ji, Tatsuo Sakai
Summary: This study found that crystallographic facets play a significant role in the interior failure mechanism of GH4169 superalloy under high cycle fatigue conditions. Factors such as slip activity in grains with high Schmidt factor, crack deflection, and the fracture of Laves phases were identified as key contributors to this mechanism.
Article
Engineering, Civil
Kailun Huang, Keyao Song, Xiang Zhou, Bin Ji, Hai Wang
Summary: Foldcore sandwich structures with kirigami-inspired folding pattern BCH have been studied for their mechanical properties using woven Kevlar fiber reinforced plastics (KFRP). The numerical and experimental results show that the BCH-based woven KFRP foldcores exhibit superior specific peak stress and stiffness under compression and shearing, with potential practical application.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Jie Zhou, Zhen Wu, Zhengliang Liu, Renbang Lin, Bin Ji, Lei Lei, Han Han
Summary: This paper proposes a new triangular composite shell element, which improves the accuracy of interlaminar stresses by enforcing continuity conditions of transverse shear stresses in advance. Several typical examples are analyzed and compared with other results, demonstrating the potential application value of the proposed shell element.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Manufacturing
Miao Zhao, Bin Ji, David Z. Zhang, Hao Li, Hailun Zhou
Summary: A parametric design approach was proposed for a novel functionally graded sheet-based BCC (FGSB) lattice structure, and the deformation behavior, mechanical properties, and energy absorption behavior of the FGSB lattice structures were investigated. The results showed that the FGSB lattice structures with the gradient perpendicular to the load direction exhibited the highest elastic modulus, yield strength, and compression strength, while the FGSB lattice structures with the gradient parallel to the load direction absorbed the largest amount of energy up to densification point.
ADDITIVE MANUFACTURING
(2022)
