Results 81 to 90 of about 15,145,976 (243)

Study of mechanical properties and enhancing auxetic mechanism of composite auxetic structures

Engineering Reports, 2021
The auxetic structures attract much attention because of their good properties, such as enhanced energy absorption capacity and buckling resistance. It is an important topic to combine the auxetic structures with other materials or structures to improve ...
Zengqin Shi, Qing Wang, Yunfeng Li, Ning Wang, Lulu Lei, Xiaodong Li   +5 more
doaj   +1 more source

CORE-SHELL MODELLING OF AUXETIC INORGANIC MATERIALS

TASK Quarterly, 2014
This paper investigates the suitability of the General Utility Lattice Program (GULP) for studying auxetic materials at the molecular level. GULP is a force-field based molec- ular modelling package which incorporates the ‘core-shell’ model for simulating polarisability. A validation procedure was performed where the capability of GULP to reproduce the
Zammit, Victor, Gatt, Ruben, Attard, Daphne, Grima, Joseph N.   +3 more
openaire   +3 more sources

Review of Auxetic Materials for Sports Applications: Expanding Options in Comfort and Protection

Applied Sciences, 2018
Following high profile, life changing long term mental illnesses and fatalities in sports such as skiing, cricket and American football—sports injuries feature regularly in national and international news. A mismatch between equipment certification tests,
O. Duncan, Todd Shepherd, C. Moroney, L. Foster, Praburaj D. Venkatraman, K. Winwood, T. Allen, A. Alderson   +7 more
semanticscholar   +1 more source

Strain‐Activated Mechanical Metamaterial With Programmable Dual‐Phase Stiffness and Enhanced Energy Absorption

Advanced Materials Technologies, EarlyView.
A strain‐activated mechanical metamaterial is developed to achieve programmable dual‐phase stiffness through an intrinsic geometric locking mechanism. Finite element modeling and parametric analysis identify the key design parameters governing activation strain, stiffness transition, and energy absorption.
Ramin Yousefi‐Nooraie, Romain Lemoine, Mario Guagliano, Sara Bagherifard   +3 more
wiley   +1 more source

Strategic Design of Soft Actuators in Translational Medical Robotics for Human‐Centered Healthcare

Advanced Robotics Research, EarlyView.
Soft robotics enables biocompatible, compliant medical devices, but clinical translation requires design‐driven engineering beyond materials. This perspective reviews implantable, surgical, and wearable systems by actuation mechanism, highlighting how optimized architectures and integration improve mechanical interfacing, adaptability, and durability ...
Ho Jun Jin, Jimin Kim, Inho Kim, Bong Hoon Kim   +3 more
wiley   +1 more source

A Review on Auxetic Polymeric Materials: Synthetic Methodology, Characterization and their Applications

Journal of Polymer Materials
Over the last three decades, there has been considerable interest in the captivating mechanical properties displayed by auxetic materials, highlighting the advantages stemming from their distinct negative Poisson's ratio.
Neetu Tripathi
semanticscholar   +1 more source

Bistable Networks Enable Complex Shape Changes

Advanced Science, EarlyView.
Transition‐controlled metamaterials are networks of bistable mechanical memory that store local binary states and express them as global shape change. By decoupling low‐force programming from high‐force holding, a single lattice is reconfigured into distinct 2D profiles and 3D surfaces without continuous actuation, enabling reusable morphing materials ...
Sawyer Thomas, Jeffrey Lipton
wiley   +1 more source

The structure design and application of metamaterials with negative Poisson's ratio

EPJ Applied Metamaterials
Metamaterials with negative Poisson's ratio, also called auxetic metamaterials, are artificially engineered structures or materials that possess extraordinary auxetic effect, high shear modulus, excellent impact resistance, and remarkable energy ...
Han Xu, Tian Jiahong, Zhang Zijian, Gao Guili, Xu Xiao, Sun Kai, Fan Runhua   +6 more
doaj   +1 more source

Explaining the Origin of Negative Poisson's Ratio in Amorphous Networks With Machine Learning

Advanced Intelligent Discovery, EarlyView.
This review summarizes how machine learning (ML) breaks the “vicious cycle” in designing auxetic amorphous networks. By transitioning from traditional “black‐box” optimization to an interpretable “AI‐Physics” closed‐loop paradigm, ML is shown to not only discover highly optimized structures—such as all‐convex polygon networks—but also unveil hidden ...
Shengyu Lu, Xiangying Shen
wiley   +1 more source

Multi‐Purpose Auxetic Foam with Honeycomb Concave Micropattern for Sound and Shock Energy Absorbers

Advanced Materials Interfaces, 2023
Porous materials have been widely used for passive energy absorption in various applications including aerospace systems, automotive vehicles, and electronic products, due to high energy dissipation and sound absorbing mechanism in a wide frequency band.
Ji‐Seok Kim, Manmatha Mahato, Jung‐Hwan Oh, Il‐Kwon Oh   +3 more
doaj   +1 more source