Results 71 to 80 of about 149,089 (310)

Molecular Dynamics Studies of Shape Memory Polymers: From Bead–Spring Models to Atomistic Simulations

Advanced Engineering Materials, EarlyView.
Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley   +1 more source

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

Advanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca, Patrick Villechaise, Malik Durand, Arnaud Longuet, Florent Coudon, Loïc Signor, Julien De Jaeger, Dominique Eyidi, Nathalie Bozzolo, Jonathan Cormier   +9 more
wiley   +1 more source

Assessing the Role of Longitudinal Variability of Vertical Track Stiffness in the Long-Term Deterioration

, 2016
The performance of the railway system in terms of dynamic loading is depending mainly on the track support conditions. Usually, the track stiffness is used as the main parameter to describe the support conditions and is defined as the ratio of the load ...
Grossoni, I., Andrade, A. R., Ramos Andrade, Antonio, Grossoni, Ilaria, Bezin, Y., Bezin, Yann   +5 more
core  

Influence of Geometric Design on Mechanical Performance of Auxetic Metastructure

Advanced Engineering Materials, EarlyView.
Strategic geometric reinforcement transforms auxetic performance. This study evaluates 3D‐printed arrowhead metastructures, revealing that a modified design with local ring reinforcement suppresses premature failure to achieve superior energy absorption and structural efficiency.
Muhammad Gulzari, Supharoek Sornsomrit, Muhammad Ayaz Akbar, Stephan Rudykh   +3 more
wiley   +1 more source

Geometry and stiffness optimization for switches and crossings, and simulation of material degradation

, 2010
A methodology for simulating wear, rolling contact fatigue, and plastic deformation for a mixed traffic situation in switches and crossings (S&C) has been developed.
Kassa, Elias,, Ekh, Magnus,, Nicklisch, Dirk,, Iwnicki, Simon,, M Ekh, Ekh, Magnus, Ekh, M., Nicklisch, D., J Nielsen, Nielsen, J., E Kassa, S Iwnicki, Iwnicki, S.,, Gebretsadik, Elias Kassa,, Nielsen, Jens,, Nielsen, Jens C. O., Nielsen, Jens, Kassa, Elias, D Nicklisch, Kassa, E., Nicklisch, D.,, Iwnicki, S.   +21 more
core   +1 more source

Design and dynamic stiffness evaluation of magnetorheological elastomer bushing using FEMM and dynamic testing machine [PDF]

, 2023
This research presents a simulation study on electromagnetic behaviour of magnetic flux density distribution in a magnetorheological elastomer (MRE) bushing. The design concept of MRE bushing is based on the design of the bushing used in the conventional
Abd Fatah, Abdul Yasser, Saiful Amri, Mazlan, Ubaidillah, U., Mohamad Ihsan, Abdul Hamid, Imaduddin, Fitrian, Izwan, Ismail, Nur Azmah, Nordin   +6 more
core  

Mayfly–Deep Learning Fusion for High-Dimensional Parameter Identification and Reinforcement of Historical Buildings

Buildings
Structural health assessment of historic buildings frequently relies on finite element (FE) model updating, yet high-dimensional parameter identification under sparse, noise-contaminated modal data can reduce robustness and lead to prohibitive ...
Zhong Peng, Bin Cheng, Shanjun Zhang, Zhiyong Li, Wei Li   +4 more
doaj   +1 more source

Comparison of Triply Periodic Minimal Surface Energy Absorbers Under Uniaxial Compressive Loading

Advanced Engineering Materials, EarlyView.
This study investigates LCD 3D printed Triply Periodic Minimal Surface (TPMS) structures as mechanical energy absorbers. By comparing various base designs and layered combinations under uniaxial compression, it identifies that a Diamond‐Gyroid sandwich structure offers superior performance.
Sergej Grednev, Noah‐Lean Roschlaub, Anne Jung   +2 more
wiley   +1 more source

Nonlinear vibration isolators with asymmetric stiffness

, 2012
A vibration source is commonly coupled to a receiving structure by a vibration isolator. A key trade-off in the choice of vibration isolator is the requirement for a wide frequency range of isolation without excessive static deflection.
Abolfathi, A.
core  

RESEARCH ON DYNAMICS CHARACTERISTICS OF SPUR GEAR BASED ON DYNAMIC MSEH STIFFNESS

Jixie qiangdu
The rotational speed of gear system directly affects the dynamic characteristies of gear system, but this important factor was often ignored by many scholars in the caleulation of mesh stiffness.
DAI ZhanSheng, LIU GuiMian
doaj