Results 31 to 40 of about 31,897 (265)

A Comparative Evaluation of Conveyor Belt Disc Brakes and Drum Brakes: Integrating Structural Topology Optimization and Weight Reduction

Technologies
Topology optimization is a well known and sophisticated method for designing structures. Through a finite element analysis, this method optimizes the design and material distribution to obtain an ideal strength-to-weight ratio and improved strain-to ...
Daniel Chelopo, Kapil Gupta
doaj   +1 more source

Complex eigenvalue analysis and parameters analysis to investigate the formation of railhead corrugation in sharp curves [PDF]

Wear, 2020
Abstract Rail corrugation, a quasi-sinusoidal irregularity of the rail head, is a common issue experienced throughout the railway networks worldwide. It generally leads to high wheel-rail dynamic loads, increased noise emission, and poor ride comfort. Most commonly, rail corrugation is likely to develop on sharp curves.
El Beshbichi O., Wan C., Bruni S., Kassa E.   +3 more
openaire   +2 more sources

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Eigenpath Following for Systems with Symmetric Complex-Valued Stiffness Matrices

Shock and Vibration, 2010
A vibration analysis of a structure with joints is performed. The simulation is conducted with finite element software capable of performing a numeric modal analysis with hysteretic damping assumption.
U. Miller, S. Bograd, A. Schmidt, L. Gaul   +3 more
doaj   +1 more source

Complex eigenvalue analysis of rotors by the transfer coefficient method.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1990
This paper proposes a new method for rotor dynamics calculations, called the transfer coefficient method, which is more convenient than the conventional transfer matrix method. By treating only the displacement as the independent variable, where both the displacement and the force are considered as independent variables in the transfer matrix method ...
Masao KOBAYASHI, Shinobu SAITO
openaire   +2 more sources

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

Friction influence on brake squeal in disc and drum brakes using complex eigenvalue analysis [PDF]

Revista Brasileira de Ensino de Física
Brake noise, is a complex issue in automotive and industrial systems caused by friction-induced vibrations between the brake pad and disc. This noise impacts vehicle performance, accelerates component wear, and diminishes consumer satisfaction.
Romulo do Nascimento Rodrigues, Anderson Luiz Dias, Camilo Augusto Santos Costa, Roberto de Araujo Bezerra   +3 more
doaj   +1 more source

Beyond the Edge: Charge‐Transfer Excitons in Organic Donor‐Acceptor Cocrystals

Advanced Functional Materials, EarlyView.
Complex excitonic landscapes in acene–perfluoroacene cocrystals are unveiled by polarization‐resolved optical spectroscopy and many‐body theory. This systematic study of a prototypical model system for weakly interacting donor–acceptor compounds challenges common views of charge‐transfer excitons, providing a refined conceptual framework for ...
Sebastian Anhäuser, Ana M. Valencia, Sergei I. Ivlev, Marc Zeplichal, Andreas Terfort, Caterina Cocchi, Gregor Witte   +6 more
wiley   +1 more source

Lumped mass acoustic and membrane eigenanalysis using the global collocation method

Cogent Engineering, 2014
The paper proposes a direct way to build lumped masses for performing eigenvalue analysis using the global collocation method in conjunction with tensor product Lagrange polynomials.
Christopher Provatidis
doaj   +1 more source

Moment-based analysis of pinning synchronization in complex networks with sign inner-coupling configurations

Frontiers in Physics, 2023
In this paper, pinning synchronization of complex networks with sign inner-coupling configurations is investigated from a moment-based analysis approach.
Yanying Yu, Linying Xiang, Bo Liu, Chengyi Xia   +3 more
doaj   +1 more source