Results 91 to 100 of about 997,975 (319)

Energy Dissipation in Nonlinearly Elastic Auxetic and Non‐Auxetic Mechanical Metamaterials with Friction and Material Damping

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a hyperelastic mechanical metamaterial for elastic energy dissipation. Energy is dissipated within its unit cells by friction assisted by material damping. Frictional contact is enhanced when using auxetic unit cells. The load–displacement plot for one compression cycle shows a pronounced hysteresis loop, indicating that a large ...
Eunhyeuk Jeong   +2 more
wiley   +1 more source

Mathematical modelling of platelet production

open access: yes, 2022
Hospitals sometimes experience shortages of donor blood platelet supplies, motivating research into in vitro production of platelets. We use mathematical modelling to study platelet production. First, we model the flow in a novel platelet bioreactor described by our collaborators in Shepherd et al.
openaire   +2 more sources

Toughness of Confined Auxetic Foams

open access: yesAdvanced Engineering Materials, EarlyView.
Auxetic (negative Poisson's ratio) materials offer benefits such as impact mitigation, thermal insulation, vibration damping, and reduced shear strain, although their fracture mechanics are largely unexplored. This study investigates damage initiation and propagation in confined re‐entrant auxetic foams from polyurethane via experimental ...
Adrianos E. F. Athanasiadis   +3 more
wiley   +1 more source

Some Exceptional Cases in Mathematics: Euler Characteristic, Division Algebras, Cross Vector Product and Fano Matroid [PDF]

open access: yes, 2011
We review remarkable results in several mathematical scenarios, including graph theory, division algebras, cross product formalism and matroid theory. Specifically, we mention the following subjects: (1) the Euler relation in graph theory, and its higher-
Nieto, J. A.
core  

A Simulative Evaluation of Triply Periodic Minimal Surface Structures in the Context of Elastocaloric Applications

open access: yesAdvanced Engineering Materials, EarlyView.
A simulative evaluation of triply periodic minimal surface (TPMS) structures for an elastocaloric application under compressive load is performed. For the evaluation of the structure's performance, surface/volume ratio, generated heat and invested mechanical work are taken into account and are compared to a tube as a reference specimen.
Michael Fries   +3 more
wiley   +1 more source

Pengembangan Modul Matematika Kontekstual Dan Penemuan Terbimbing Untuk Meningkatkan Eq Siswa Akselerasi

open access: yesNidhomul Haq, 2018
The aim of this study produces contextual and guided inquiry mathematics module to increase EQ of acceleration students and describe the quality of the developed product.
Yhasinta Agustyarini
doaj   +1 more source

Evaluation Strategies of Hil48 Yield Criterion in Application: Toward Sufficient and Necessary Conditions for Prediction of Plastic Anisotropy

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents a comprehensive analysis of the intrinsic relationships and applicability of Hill48 yield criterion. The applicability and error evaluation conditions for Hill48 are established based on specific experimental data. A parameter calibration strategy for N‐value based on error minimization is proposed, and the predictive accuracy is ...
Jinxin Wang   +9 more
wiley   +1 more source

Development and Preliminary In Vivo Study of 3D‐Printed Bioactive Glass Scaffolds with Trabecular Architecture

open access: yesAdvanced Engineering Materials, EarlyView.
This study reports the fabrication of trabecular bioactive glass scaffolds (composition “1d”: 46.1SiO2‐28.7CaO‐8.8MgO‐6.2P2O5‐5.7CaF2‐4.5Na2O wt%) through vat photopolymerization and the relevant results from mechanical testing and in vivo implantation procedures in rabbit femora, showing great promise for bone tissue engineering applications.
Dilshat Tulyaganov   +8 more
wiley   +1 more source

THE INTEGRATION MODEL OF SYSTEMS OF DISTANCE AND OF TRADITIONAL MATHEMATICS LEARNING OF SENIOR PUPILS

open access: yesSovremennye Issledovaniâ Socialʹnyh Problem, 2013
In this article the author dwells on the content and structure of the model of integration of system of distance learning to mathematics of senior pupils and traditional paradigm of education.
Игорь Николаевич Макарьев
doaj  

The Validity of Student Worksheets Based on ETHNO-STEM Material on Volume of Rotating Objects

open access: yesJournal of Medives: Journal of Mathematics Education IKIP Veteran Semarang
This research aims to produce a valid Ethno-STEM-based student worksheet product with a rotating object volume material so that it is suitable for use in learning.
Akhmad Nayazik
doaj   +1 more source

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