Results 21 to 30 of about 8,884,430 (245)

Study on re-entrant hierarchical honeycombs in-plane impact

Scientific Reports, 2023
The introduction of hierarchical structure in cell materials can further improve their energy absorption effect, and negative Poisson's ratio materials have excellent energy absorption capacity and special deformation mode.
Jinming Lian, Lei Xu, Donggao Wu, Zhenqing Wang   +3 more
doaj   +1 more source

A concave four-arc honeycomb with enhanced stiffness and desirable negative Poisson’s effect

Scientific Reports, 2023
The conventional star-shaped honeycomb (CSSH) structure is inherently rich in mechanical properties. Based on the CSSH structure, the Poisson's ratio and Young’s modulus can be improved by adding the tip re-entrant angle (ISSH).
Ning Feng, Yuanhao Tie, Ronghui Guo, Qingwen Yuan, Fengling Xue, Cheng Li, Liwen Lv, Weibo Xie   +7 more
doaj   +1 more source

On the response of re-entrant auxetic structure under dynamic crushing

Mechanics & Industry, 2023
The present work focuses on the dynamic crushing response of 2D re-entrant auxetic honeycomb. The aim of this work is to propose analytic formulations to predict the crushing strength of the considered structure by including design parameters (specific ...
Petit Adeline, Beaujouan David, Delille Rémi, Chaari Fahmi, Langlet André   +4 more
doaj   +1 more source

Numerical study of a re-entrant diamond structure under dynamic compression

, 2021
Auxetic materials, due to its negative Poisson's ratio, shrink laterally when compressed axially and expand laterally when pulled axially. A re-entrant diamond structure was developed by replacing the vertical walls in a conventional re-entrant structure
KP Logakannan (19331224), J Rengaswamy (19331227), V Ramachandran (13672144), Dong Ruan (18926509)   +3 more
core   +1 more source

Mechanical properties of sandwich composites with 3d-printed auxetic and non-auxetic lattice cores under low velocity impact

Materials & Design, 2018
This work presents a comparative study on the reliability of auxetic (re-entrant honeycomb) and non-auxetic (diamond lattice and conventional honeycomb) lattice composites.
Shaoyu Hou, Tiantian Li, Zian Jia, Lifeng Wang   +3 more
doaj   +1 more source

Effect of Two-Dimensional Re-Entrant Honeycomb Configuration on Elastoplastic Performance of Perforated Steel Plate

Applied Sciences, 2020
Perforated steel plates with regularly shaped holes are already widely employed as steel dampers, which dissipate seismic energy through plastic deformation of steel.
Yiyi Zhou, Changfeng Zhou, Zhan Shu, Liang-Jiu Jia   +3 more
doaj   +1 more source

Piezoresistive sensing performance of multifunctional MWCNT/HDPE auxetic structures enabled by additive manufacturing

Polymer Testing, 2022
Herein, we report the mechanical and piezoresistive sensing performance of 3D printed auxetic nanocomposite structures composed of a high-density polyethylene (HDPE) matrix and multi-walled carbon nanotubes (MWCNTs).
Sara AlMahri, Johannes Schneider, Andreas Schiffer, S. Kumar   +3 more
doaj   +1 more source

Investigation of mechanical properties of re-entrant structure [PDF]

, 2019
Fen Bilimleri Enstitüsü, İnşaat Mühendisliği Ana Bilim DalıKonvansiyonel girintili (re-entrant) yapı düşük rijitliğe sahip bir hücre yapısıdır. Girintili yapının rijitliğinin ve mekanik özelliklerinin artırılması kullanım alanlarının genişlemesini ...
Öztürk, Mitat
core   +1 more source

The Effect of Orientation Angle of Center Facing Arm on Elongation of 3D-Printed Auxetic-Structure Textiles

Textiles
This study aimed to examine the effect of the orientation angle of center facing arms on the elongation and strength of 3D-printed textiles with two different re-entrant cellular auxetic structures.
Shahbaj Kabir, Yu Li, Young-A Lee
doaj   +1 more source

Experimental investigation of unsteady characteristics of ventilated cavitation flow around an under-water vehicle

Advances in Mechanical Engineering, 2016
The objective of this article is to investigate the flow structure of the ventilated cavitation around an under-water vehicle. In the experiments, a high-speed camera system is used to observe cavity evolution of the unsteady cavitation flow, the ...
Xiaoshi Zhang, Cong Wang, Yingjie Wei, Tiezhi Sun   +3 more
doaj   +1 more source