Article
Engineering, Manufacturing
Jan-Hendrik Groth, Mirco Magnini, Christopher Tuck, Adam Clare
Summary: Current biomimetic designs lack the incorporation of natural variance, while the presented methodology allows for the introduction of randomness through the superimposition of Gaussian distribution on regular arrays of parametric unit cells, preventing overlaps and providing a template for more accurate mimicry of biological structures across multi-physics problems.
ADDITIVE MANUFACTURING
(2022)
Review
Chemistry, Multidisciplinary
Hannah Haag, Paul D. Dalton, Veerle Bloemen
Summary: The regeneration and repair of complex structures in natural tissues remains a challenge, but recent advances in additive manufacturing have allowed for the development of more biomimetic scaffold designs. This review explores scaffold-based and scaffold-free approaches, as well as the use of fabrication technologies to produce complex implants. It highlights advanced scaffold designs and pre-programmed assembly methods, and discusses the application of hybridized manufacturing processes in tissue engineering.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Biomedical
Joseph Deering, Kierdra I. Dowling, Liza-Anastasia DiCecco, Griffin D. McLean, Bosco Yu, Kathryn Grandfield
Summary: Porous scaffolds designed using selective Voronoi tessellation mimic the natural structure of trabecular bone, with preferential seeding creating a texture and orientation in the implant. Anisotropy and tunable architecture are increased in these biomimetic scaffolds, demonstrating an effective method for generating patient-specific bone geometries.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Engineering, Multidisciplinary
Felipe Fernandez, James P. Lewicki, Daniel A. Tortorelli
Summary: This study proposes an optimization method for toolpath trajectories of additively manufactured composite cylinders, utilizing parameterized level-set functions to optimize material properties and impose manufacturing constraints, in order to achieve printed composite structures that meet requirements.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Pierandrea Dal Fabbro, Stefano Rosso, Alessandro Ceruti, Diego Boscolo Bozza, Roberto Meneghello, Gianmaria Concheri, Gianpaolo Savio
Summary: This paper presents suitable methods for obtaining optimized conformal lattice structures and validating them efficiently. The NURBS-FFD modeling approach and the size optimization method are highlighted for their adaptability and reliability, while limitations of structural beam analysis in dealing with thick beams are noted. Additionally, the behavior of different types of lattices was investigated in the study.
APPLIED SCIENCES-BASEL
(2021)
Article
Materials Science, Multidisciplinary
Rossana R. Fernandes, Ali Y. Tamijani
Summary: This paper presents an experimentally validated framework for performing topology and orientation optimization of lattice structures subject to stress constraints. Effective stiffnesses and yield stresses of a unit cell are obtained using numerical homogenization and implemented via macrostructure topology optimization to improve lattice structure stiffness.
MATERIALS & DESIGN
(2021)
Review
Engineering, Multidisciplinary
Md Shahjahan Hossain, Hossein Ebrahimi, Ranajay Ghosh
Summary: Fish scale inspired materials and structures, which can provide advanced mechanical properties and functionalities, have been extensively studied in the past decade. These materials, resembling fish scales, can be tailored to have adjustable stiffness, penetration and fracture resistance, buckling prevention, nonlinear damping, hydrodynamic and camouflaging functions. The programmable behavior of these materials is achieved by leveraging their unique morphology and structure-property relationships. Advanced tools for characterization, manufacturing, modeling and computation have been used to understand and discover their behavior. With the advancement in additive manufacturing techniques and modeling and computational methods, efforts are being made to realize even more ambitious designs in this field.
BIOINSPIRATION & BIOMIMETICS
(2022)
Article
Materials Science, Multidisciplinary
Wenjun Wu, Pai Liu, Yiqiang Wang, Zhan Kang
Summary: This paper introduces a new design of bistable structures that achieve torsional bistability under uniaxial compression. The proposed structure is composed of two co-axis polygonal prisms connected by struts, and torsional bistability is achieved by opposite rotations of the prisms. An analytical model and numerical simulations demonstrate the need for a dual-material design for the inclined and connecting struts to induce bistability.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Chukwuzubelu Okenwa Ufodike, Hui Wang, Mohammad Faisal Ahmed, Grzegorz Dolzyk, Sungmoon Jung
Summary: The study introduces a biomorphic structure BBS inspired by the microstructure of bamboo, manufactured using FFF technology, which can efficiently absorb impact energy. This parametric design has the potential for large-scale manufacturing of energy-absorbing engineering structures.
MATERIALS & DESIGN
(2021)
Article
Engineering, Biomedical
Chukwuzubelu Okenwa Ufodike, Mohammad Faisal Ahmed, Grzegorz Dolzyk
Summary: This study investigated the mechanical behavior and energy absorption capabilities of novel Biomorphic Cellular Structures inspired by the microstructure of cedar, oak, and palm wood using Additive Manufacturing technology, experimental testing, and Finite Element Analysis. The results showed that cedar-bcs provided the best mechanical performance compared to the other two biomorphic cellular structures.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Tiffany Cheng, Marc Thielen, Simon Poppinga, Yasaman Tahouni, Dylan Wood, Thorsten Steinberg, Achim Menges, Thomas Speck
Summary: This study introduces a material programming approach based on biological role models for designing 4D-printed self-shaping material systems. Computational design methods and extrusion-based 3D printing are used to customize bio-inspired behaviors, transferring the principle of force generation by climbing plants to self-tightening splints. This approach allows for novel biomimetic design strategies to be applied to 4D-printed motion mechanisms, expanding the design possibilities for wearable assistive technologies.
Article
Mechanics
Miao Zhao, David Z. Zhang, Zhonghua Li, Tao Zhang, Hailun Zhou, Zhihao Ren
Summary: A novel parametric approach was proposed to improve the mechanical properties of lattice structures. The performance and deformation behavior of lattice structures with different taper struts were investigated through finite element analysis and experimental tests. The results show that tapered struts can reduce stress concentration and increase the elastic modulus of the structure.
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
Ali Radhi, Vincent Iacobellis, Kamran Behdinan
Summary: Additive Manufacturing (AM) is a disruptive production and prototyping technology, and topology optimization can generate complex structure designs suitable for AM. However, AM has its own limitations and stress factors, which, when not considered, require postprocessing and reduce the performance of optimized structures. Therefore, a stress-based optimization framework for AM is proposed to ensure designs meet the geometric constraints of AM.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Materials Science, Multidisciplinary
Jianxing Yang, Xiaohong Chen, Yuanxi Sun, Chen Feng, Zheng Yang, Amir A. Zadpoor, Mohammad J. Mirzaali, Long Bai
Summary: The advent of additive manufacturing has made it easier to design and fabricate hybrid lattice structures. These structures combine multiple distinct architectures into a single structure with exceptional performance. This study proposes a novel design approach inspired by grain boundaries in polycrystalline materials to address the challenge of establishing effective connections in strut-based lattices. Experimental observations confirm the efficacy of this approach and its potential impact on the development of designer materials with advanced functionalities.
MATERIALS & DESIGN
(2023)
Article
Polymer Science
Abdulsalam Abdulaziz Al-Tamimi, Mehdi Tlija, Mustufa Haider Abidi, Arfat Anis, Abd Elaty E. Abd Elgawad
Summary: Material extrusion (ME) is an additive manufacturing technique that requires further exploration in multi-material fabrication. This study investigates different conditions and designs to optimize PLA-ABS composite parts without pre- or post-processing procedures. The results show that it is possible to create composite structures with good mechanical properties and surface roughness values without costly post-processing procedures.
Article
Engineering, Multidisciplinary
Hongxu Wang, Dakshitha Weerasinghe, Paul J. Hazell, Damith Mohotti, Evgeny V. Morozov, Juan P. Escobedo-Diaz
Summary: This study investigates the impact behavior of UHMWPE textile composites under different matrix rigidities. Experimental and numerical methods were used to analyze the mechanical properties. It was found that the composites changed from membrane stretching mode to plate bending mode as the matrix rigidity and thickness increased. The flexible matrix composites had higher perforation resistance but larger deformation compared to the rigid matrix counterparts.
DEFENCE TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Matthew J. Donough, B. Gangadhara Prusty, Mitchell J. Van Donselaar, Evgeny V. Morozov, Hongxu Wang, Paul J. Hazell, Andrew W. Philips, Nigel A. St John
Summary: This work investigated the damage in thick glass-fibre/epoxy laminates caused by low velocity impacts. Experimental and numerical results showed that the impact damage was localized in the vicinity of the impactor contact area and included an interplay of various damage mechanisms. The highest impact damage resistance was obtained with the 0 degrees (in-plane) specimen due to the alignment of fibers to the impact loading direction.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Article
Engineering, Aerospace
Jian Jiang, Zhifang Zhang, Jiyang Fu, Hongxu Wang, Ching-Tai Ng
Summary: This paper proposes a damage constitutive model for composite laminates under impact loading that considers through-thickness compression failure. The study compares this model with those that do not consider through-thickness compression failure, aiming to improve impact response analysis and discuss the necessity of including such damage in simulations. The results show that the proposed constitutive model accurately predicts impact force, displacement, damage, and energy absorption of laminates, confirming the occurrence of through-thickness compression damage near the impact side. Longitudinal fiber and matrix tension damage primarily occur in the annular region around the impact center on the laminates' rear side.
AEROSPACE SCIENCE AND TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Yang Wang, Qiang Liu, Biao Zhang, Hongxu Wang, Paul J. Hazell, Bo Li, Tao Song, Ling Li, Futian Liu, Feng Ye
Summary: In this study, a new type of B4C/2024Al functionally gradient material (FGM) with eliminated sharp interfaces was constructed to reproduce the hierarchical and gradient structures of nacre. The FGMs demonstrated improved performance in resisting ballistic attacks and maintaining integrity compared to uniform structures. The nacre-like structure introduced multiple toughening mechanisms and increased energy-absorbing capability. The elimination of abrupt interfaces prolonged the projectile-target interaction period and strengthened the eroding effect on the projectile.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Engineering, Multidisciplinary
Shakib Hyder Siddique, Paul J. Hazell, Gerald G. Pereira, Hongxu Wang, Juan P. Escobedo, Ali A. H. Ameri
Summary: This paper investigates the stiffness and energy absorption capabilities of biomimetic structures based on the internal architecture of a cornstalk. The specimens were manufactured using 3D printing and a tough thermoplastic material. Compression tests were performed to extract various parameters, and a numerical model was developed to analyze the behavior of the structures. The results showed that the cornstalk-inspired biomimetic structure had a significantly higher specific energy absorption capability compared to other designs.
Article
Engineering, Manufacturing
Hari Bahadur Dura, Paul J. Hazell, Hongxu Wang, J. P. Escobedo-Diaz
Summary: A biomimetic protective beam inspired by curved elasmoid fish scales was studied using numerical and experimental approaches to investigate its bending stiffness properties. The results show that the bioinspired design has improved flexural stiffness compared to the baseline design, and scales with smaller radii exhibit greater structural resilience, which is suitable for the design of protective structures for low-velocity impact applications.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Review
Engineering, Manufacturing
Arcade Serubibi, Paul J. Hazell, Juan Pablo Escobedo, Hongxu Wang, Ebrahim Oromiehie, Gangadhara B. Prusty, Andrew W. Phillips, Nigel A. St John
Summary: Recent advances in automated manufacturing of composite structures have sparked renewed interest in fibre metal laminates (FMLs) across various engineering sectors. FML structures, which combine metal plates and composite laminates, are increasingly being utilized for their excellent mechanical properties and cost-effectiveness in withstanding impact and blast loading. This review paper consolidates recent publications to provide an overview of the behavior of FML structures under impact and blast loading, compares existing techniques for assessing failure mechanisms, discusses numerical modeling approaches applicable to heterogeneous structures, and presents innovative designs to enhance the energy absorption capability and damage tolerance of FML structures.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Nanoscience & Nanotechnology
Jianshen Wang, Daniel East, Evgeny V. Morozov, Hongxu Wang, Paul J. Hazell, Juan P. Escobedo-Diaz
Summary: This study investigated the mechanical response, microstructures, and failure mechanisms of additively manufactured Ti matrix composites with Ti2Ni and TiCx reinforcements under various loading rates. The results showed that the mechanical properties of the composites changed with the NCG fraction. The failure mechanisms involved tensile fracture of TiCx precipitates and shear of the Ti matrix. Composites with higher NCG content exhibited increased strength, reduced ductility, and lower strain rate sensitivity. The Ti-Ni-C composite showed enhanced strength without compromising ductility under high strain rate compression loading, making it a promising material for impact load applications.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Engineering, Environmental
Yuekai Xie, Hongxu Wang, Yingying Guo, Chenman Wang, Hanwen Cui, Jianfeng Xue
Summary: This study investigates the potential application of biochar-amended soils as landfill covers. The results indicate that biochar-amended soils as intermediate covers can increase the pH of leachate and decrease the accumulation of VFAs. Additionally, the application of biochar-amended soils as both intermediate and final covers can increase the biocompression ratios and settlement of municipal solid wastes.
Article
Construction & Building Technology
Mohammad Kaiser Ahamed, Hongxu Wang, Ali Ameri, Paul J. Hazell
Summary: This study investigates the flexural behavior of bio-inspired ECC beams under quasi-static and dynamic bending loads. The results reveal that the bio-inspired beams exhibit better ductility, larger deformation capacity, higher energy absorption, and stronger resistance to impact.
JOURNAL OF BUILDING ENGINEERING
(2023)
