Analytical and Finite Element Solution for Functionally Graded Pressure Vessels Subjected to Finite Strain Coupled Axial and Torsional Deformations DOI Open Access
Mohammad Shojaeifard,

Arash Valiollahi,

Davood Rahmatabadi

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(9), P. 2136 - 2136

Published: May 6, 2025

This study presents an analytical solution to examine the mechanical behavior of incompressible, functionally graded hyperelastic cylinder under combined extension and torsion. The exp-exp strain energy density function characterizes material, with parameters varying exponentially along radial direction. To validate solution, finite element simulations using a custom UHYPER in ABAQUS are performed. numerical results show strong agreement across different stretch twist levels. stress distribution maximum significantly influenced by exponential parameter governing material gradients. Unlike axial stretch, torsion induces more intricate longitudinal distribution, large twisting producing two extrema that shift toward cylinder’s center outer surface. Longitudinal primarily governs von Mises variations A critical is identified, below which torsion-induced force transitions compression, elongating during twisting. Beyond this shifts from tensile compressive increasing twist, causing initial shortening before further elongation.

Language: Английский

Optimizing the filler distribution to enhance the interlaminar shear strength and impact resistance of fiber reinforced epoxy composites DOI

M. Saravana Kumar,

Che‐Hua Yang,

M. Vignesh

et al.

Polymer Composites, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

Abstract In recent years, there has been a lot of interest in the use natural fibers as reinforcements and ceramic particles fillers polymer composites. However, unoptimized process parameters frequently result flaws such cavity development, non‐homogeneous distribution, poor wettability, particle agglomeration. By optimizing filler %, stirring duration, number fiber layers, this study seeks to improve homogeneous distribution matrix reinforcement. This was accomplished by employing L 27 orthogonal array disperse silicon carbide (SiC) bamboo fiber‐reinforced epoxy The included varying SiC percentage (5%, 11%, 17%), duration (5, 10, 15 min), layers (2, 3, 4). order identify ideal parameter settings compare experimental results with predictions, utility analysis, conjunction an artificial neural network, utilized analyze response parameters, including porosity, inter laminar shear stress (ILSS), impact strength. According results, using 11% SiC, for 10 min, adding four increases strength 62.3% interlaminar 60.9% while lowering porosity 1.19%. These findings emphasize how crucial it is precisely manage processing optimize produce high‐performance composites improved mechanical characteristics few flaws. Highlights A drastic change ILSS from 12 18 MPa witnessed. Porosity dramatically decreased 2.5% after min swirling. Elongated were observed interaction region. Four increase 62.3%.

Language: Английский

Citations

0
Review of plastic deformation mechanisms and crystal plasticity modelling of uranium DOI
Sheng Zhang, Fan Liu,

Dongli Zou

et al.

Materials Science and Engineering A, Journal Year: 2025, Volume and Issue: unknown, P. 148324 - 148324

Published: April 1, 2025

Language: Английский

Citations

0
Porosity prediction in LPBF of AISI 316L stainless steel: Refined volumetric energy density and FEM simulation approach DOI
Muhammad Arif Mahmood, Kashif Ishfaq, Mihai Oane

et al.

Optics & Laser Technology, Journal Year: 2025, Volume and Issue: 188, P. 113015 - 113015

Published: April 19, 2025

Language: Английский

Citations

0
Recent Progress in Energy Harvesting Technologies for Self‐Powered Wearable Devices: The Significance of Polymers DOI

Hana Afshar,

Farimah Kamran,

Farangis Shahi

et al.

Polymers for Advanced Technologies, Journal Year: 2025, Volume and Issue: 36(4)

Published: April 1, 2025

ABSTRACT The growing demand for self‐powered wearable electronic devices in healthcare, fitness, and entertainment has driven significant advancements energy harvesting technologies. This review explores the latest progress mechanisms that enable sustainable autonomous devices, with a particular emphasis on role of polymers their development. Polymers offer unique combination mechanical flexibility, biocompatibility, lightweight properties, making them ideal applications. systematically categorizes major technologies into three primary mechanisms: thermoelectric generators (TEGs), piezoelectric harvesters (PEHs), triboelectric nanogenerators (TENGs). Each section provides an in‐depth discussion working principles, material innovations, fabrication techniques, applications these systems. Beyond fundamental mechanisms, discusses hybrid systems integrate multiple sources to maximize power generation ensure continuous device operation. storage technologies, such as flexible supercapacitors micro‐batteries, is also highlighted address intermittency challenges ambient sources. Despite progress, remain improving conversion efficiency, enhancing durability, optimizing system integration real‐world identifies key research directions overcoming challenges, including advanced materials engineering, miniaturization artificial intelligence‐driven management strategies. findings presented this provide valuable insights development next‐generation paving way efficient electronics seamlessly daily life.

Language: Английский

Citations

0
Energy Dissipation Mechanisms in Topologically Interlocking Structures DOI

Yunjie Jing,

Ziqi Chen, Heran Wang

et al.

International Journal of Mechanical Sciences, Journal Year: 2025, Volume and Issue: unknown, P. 110317 - 110317

Published: May 1, 2025

Language: Английский

Citations

0
Analytical and Finite Element Solution for Functionally Graded Pressure Vessels Subjected to Finite Strain Coupled Axial and Torsional Deformations DOI Open Access
Mohammad Shojaeifard,

Arash Valiollahi,

Davood Rahmatabadi

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(9), P. 2136 - 2136

Published: May 6, 2025

This study presents an analytical solution to examine the mechanical behavior of incompressible, functionally graded hyperelastic cylinder under combined extension and torsion. The exp-exp strain energy density function characterizes material, with parameters varying exponentially along radial direction. To validate solution, finite element simulations using a custom UHYPER in ABAQUS are performed. numerical results show strong agreement across different stretch twist levels. stress distribution maximum significantly influenced by exponential parameter governing material gradients. Unlike axial stretch, torsion induces more intricate longitudinal distribution, large twisting producing two extrema that shift toward cylinder’s center outer surface. Longitudinal primarily governs von Mises variations A critical is identified, below which torsion-induced force transitions compression, elongating during twisting. Beyond this shifts from tensile compressive increasing twist, causing initial shortening before further elongation.

Language: Английский

Citations

0