Results 81 to 90 of about 5,461,887 (221)

Auxetic cell structure as an impact absorbing material in bio-composite aero helmet [PDF]

, 2016
This study is specifically concerned with the application of auxetic cell structures as an impact absorbing material. Despite the need of high energy absorption materials in safety application, limited research has been devoted to identify the potential ...
Yaakob, Mohd Saffuan
core   +1 more source

Investigating Three-Dimensional Auxetic Structural Responses to Impact Loading with the Generalized Interpolation Material Point Method

Buildings
Understanding three-dimensional (3D) auxetic structural responses to impact loading remains challenging due to large deformations involving failure evolution and the interaction between geometric and material instabilities. In this study, the Generalized
Xiatian Zhuang, Yu-Chen Su, Zhen Chen
doaj   +1 more source

Accelerating Musculoskeletal Robotics Through Parametric Design and 3D‐Printed Flexible Structures

Advanced Intelligent Systems, EarlyView.
Parametric design and flexible 3D printing create muscle‐, tendon‐, ligament‐, and cushion‐like robotic elements from a single thermoplastic polyurethane material. Tuning lattice patterns adjusts regional mechanical properties and enables coordinated multijoint motions in a life‐sized musculoskeletal leg under external suspension, with partial body ...
Shunnosuke Yoshimura, Kento Kawaharazuka, Kei Okada   +2 more
wiley   +1 more source

Mechanism-Driven Design and Validation of a Multi-Material Polymeric Auxetic for Deformation-Activated Sealing

Auxetic polymers offer a route to deformation-activated sealing by transforming axial deformation into lateral expansion, enabling controlled conformity and retention within perforated structures.
Albarakati, Rakan, Titchener-Hooker, Henry, Hassanin, Hany, Essa, Khamis; id_orcid   +3 more
core   +4 more sources

Sensors Based on Auxetic Materials and Structures: A Review

Materials, 2023
Auxetic materials exhibit a negative Poisson’s ratio under tension or compression, and such counter-intuitive behavior leads to enhanced mechanical properties such as shear resistance, impact resistance, and shape adaptability. Auxetic materials with these excellent properties show great potential applications in personal protection, medical health ...
Shanshan Dong, Hong Hu
openaire   +2 more sources

Programmable crack dynamics engineering enables flexible strain sensors with high linearity

FlexMat, EarlyView.
First‐decoupling theoretical framework of crack evolution elucidating the control methods, mechanistic insights, and structure‐activity relationships is established. Crack propagation from uncontrollable randomness systematically evolves into spatially ordered states.
Chunjin Wu, Shaolong Wang, Xu Wang, Heng Zhu, Yongliang Tian, Xinchen Jiang, Xin Rao, Yutong Han, Changrun Wang, Wen‐Yong Lai   +9 more
wiley   +1 more source

Recent advances in multifunctional soft robots: A materials–structures–systems co‐design perspective for synergistic integration

FlexMat, EarlyView.
Abstract Soft robots, engineered from highly compliant materials, offer superior adaptability and safety in unstructured environments compared to their rigid counterparts. Recent advancements, fueled by bio‐inspiration and material programmability, have led to the rapid co‐evolution of their core modules: actuation, sensing, protection, energy, and ...
Qiulei Liu, Zicao Peng, Chong Sun, Haitao Yang   +3 more
wiley   +1 more source

Structural design and 3D printing of flexible integrated electronic systems

FlexMat, EarlyView.
This review provides a comprehensive overview of design and integration strategies for individual components in flexible electronics, highlights the 3D‐printing fabrication techniques, and discusses recent advances in system‐level integration and their applications in real‐time monitoring and intelligent robotics.
Jiani Gong, Jiaying Wang, Changsong Shi, Chi Guo, Songze Fu, Jie Tao, Xiaolong Chen, Yunfei Chen, Zhiyang Lyu   +8 more
wiley   +1 more source

Constitutive memory equations for auxetic materials

Mathematical Modelling and Analysis
In this note we suggest a set of constitutive equations for anelastic materials whose internal structure can present anomalous variations resulting from external effects of tension/compression, as in auxetic media. For these problems we require of a new function related with the variation of internal structure, which allows us to define a threshold ...
Michele Caputo, Vittorio Ruggiero
openaire   +3 more sources

Homogenization of periodic auxetic materials

Procedia Engineering, 2011
AbstractMaterialspresentinganegativePoisson'sratio(auxetics)havedrawnattentionforthepasttwodecades,especiallyinthefieldoflightweightcompositestructuresandcellularmaterials.Studieshaveshownthatauxeticitymayresultinhighershearmodulus,fracturetoughnessandacousticdamping.Inthiswork,threeauxeticperiodiclatticesareconsidered ...
Dirrenberger, J., Forest, S., Jeulin, D., Colin, C.   +3 more
openaire   +1 more source