Опубликована: Янв. 1, 2024
Язык: Английский
Composite Structures, Год журнала: 2025, Номер unknown, С. 119166 - 119166
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
1
Thin-Walled Structures, Год журнала: 2023, Номер 193, С. 111247 - 111247
Опубликована: Окт. 2, 2023
Язык: Английский
Процитировано
20
Smart Materials and Structures, Год журнала: 2024, Номер 33(7), С. 075013 - 075013
Опубликована: Май 24, 2024
Abstract
Auxetic
metamaterials
have
shown
good
stability
and
uniform
deformation
capabilities
against
influences
(vibration,
temperature
change,
load
change),
making
them
significant
in
maintaining
adjusting
the
bandgap
of
phonon
crystals.
The
low-frequency
broadband
are
important
goals
For
most
traditional
re-entrant
honeycomb
structures
(T-RHS),
range
is
narrow
tunability
poor.
Here,
an
auxetic
hybrid
structure
with
tunable
acoustic
(AHS-T)
consisting
periodic
mass
inclusions
integrated
chiral
proposed.
Aiming
at
investigating
range.
Compared
T-RHS,
real-time
adjustment
wider
bandwidth
AHS-T
be
realized
during
compression
tension.
numerical
results
show
that
can
flexibly
tailored
by
reasonably
strain
geometrical
configurations
AHS-T.
increased
to
87.1%
when
bottom
diameter
Язык: Английский
Процитировано
6
Thin-Walled Structures, Год журнала: 2024, Номер unknown, С. 112504 - 112504
Опубликована: Окт. 1, 2024
Язык: Английский
Процитировано
4
Advanced Engineering Materials, Год журнала: 2024, Номер 26(5)
Опубликована: Янв. 22, 2024
Inspired by rotating rigid structures, an auxiliary triangular honeycomb structure (ARTH) is designed in this article. The has dual platform stress, which can reduce the initial peak stress generated during collisions, reducing injuries to pedestrians and vehicle occupants. accuracy of finite element numerical model verified experiments, a series researches are carried out. mechanical properties at different velocities studied classification diagram deformation modes obtained. Under low‐speed impact load, ARTH two stages plateau regions, second more than twice that first plateau. Then, theoretical based on plastic dissipation theory predicts under quasi‐static conditions. Parametric analysis shows increasing wall thickness t significantly improve energy absorption, but negative Poisson's ratio effect weakened. influence angle θ stage significant. These studies provide some references for design double‐platform reduction structures.
Язык: Английский
Процитировано
3
Polymer Composites, Год журнала: 2025, Номер unknown
Опубликована: Фев. 19, 2025
Abstract Carbon fiber reinforced polymer (CFRP) auxetic composite structures have attracted an increasing attention in recent years due to their lightweight and superior mechanical properties compared with traditional structures. However, most of the reported all‐CFRP are often accompanied cliff‐like stress drops during failure process, resulting lower energy absorption. This paper reports design, fabrication characterization a novel type petal‐like lightweight, high‐strength, good absorptive properties. Four uniform/gradient were first made different angle values continuous CFRP composites. Then, properties, Poisson's ratio mechanism under quasi‐static compression loading analyzed. Based on experimental results, gradient structure constructed cells varying angles was further selected study its dynamic response initial impact energies positions. The results show that composites can maintain even large deformation. Impressively, these exhibit plateau phase compression, indicative exceptional absorption capabilities. low velocity point tests also displacement peak number peaks load–displacement curves significantly influenced by changes position energy. research offers valuable insight into developing fabricating characteristics. Highlights Auxetic high EA capacity designed fabricated. Their static loads studied. significant performance. exhibits abundant forms.
Язык: Английский
Процитировано
0
Engineering Structures, Год журнала: 2025, Номер 335, С. 120258 - 120258
Опубликована: Апрель 18, 2025
Язык: Английский
Процитировано
0
Acta Mechanica, Год журнала: 2025, Номер unknown
Опубликована: Май 13, 2025
Язык: Английский
Процитировано
0
Engineering Structures, Год журнала: 2025, Номер 337, С. 120565 - 120565
Опубликована: Май 16, 2025
Язык: Английский
Процитировано
0
AI in Civil Engineering, Год журнала: 2024, Номер 3(1)
Опубликована: Май 14, 2024
Abstract Auxetic honeycomb sandwich structures (AHS) composed of a single material generally exhibit comparatively lower energy absorption (EA) and platform stress, as compared to traditional non-auxetic (TNS). To address this limitation, the present study examines use aluminum foam (AF) filling in re-entrant structure (RS). Filling AHS with AF greatly enhances both EA stress comparison TNS AF, while auxetic composite effectively addresses interface delamination observed structures. Subsequently, positive–negative Poisson’s ratio coupling designs are proposed strengthen mechanical features structure. The analysis results show that optimizes properties by leveraging high bearing capacity hexagonal great interaction between material. In contrast structures, demonstrate superior performance, suggesting their immense potential for utilization protective engineering.
Язык: Английский
Процитировано
2