Results 111 to 120 of about 73,080 (285)

Dynamic comparison of different types of slab track and ballasted track using a flexible track model

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2011
The dynamic performance of a ballasted track and three types of slab track is analysed and compared by means of a comprehensive dynamic model of the train–track system, generated using two commercial analysis software packages: the commercial multibody system (MBS) analysis software SIMPACK and the finite element method (FEM) analysis software NASTRAN.
Blanco-Lorenzo, Julio, Santamaría Manrique, Javier, García Vadillo, Ernesto, Oyarzabal de Celis, Olatz   +3 more
openaire   +2 more sources

Cobalt‐Free Single‐Crystal Cathodes for Next‐Generation Lithium‐Ion Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Cobalt‐free single‐crystal cathodes enhance lithium‐ion battery stability by mitigating fracture, degradation, and phase transitions. This review highlights Ni‐rich layered, Li‐Mn‐rich, spinel, and olivine frameworks, synthesis strategies enabling morphology and defect control, and structural tuning via doping and coatings, offering pathways toward ...
Srinivasan Alagar, Rakesh Saroha, Jun Kim, Hyung Do Kim, Jung Sang Cho, Sang Mun Jeong   +5 more
wiley   +1 more source

Influence of Vibration Isolator Failure on Vehicle Operation Performance and Floating Slab Track Structure Vibration Reduction Effectiveness

Shock and Vibration, 2019
At present, steel-spring floating slabs have been widely used in urban rail transit to reduce the influence of ground vibration caused by vehicle operation on the surrounding environment. As a core part of vibration reduction for floating slab track, the
Caiyou Zhao, Dongya Liu, Xiaoming Zhang, Qiang Yi, Liuchong Wang, Ping Wang   +5 more
doaj   +1 more source

Nonlinear damping of slab modes and cosmic ray transport

, 2007
By applying recent results for the slab correlation time scale onto cosmic ray scattering theory, we compute cosmic ray parallel mean free paths within the quasilinear limit. By employing these results onto charged particle transport in the solar system,
A. Lazarian, A. Shalchi, Bavassano, Bieber, Bruno, Cho, Earl, Farmer, Gloeckler, Goldreich, Hasselmann, Jokipii, Lazarian, Melrose, Michalek, Möbius, Palmer, Qin, R. Schlickeiser, Schlickeiser, Schlickeiser, Shalchi, Shalchi, Shalchi, Shalchi, Shalchi, Teufel, Yan   +27 more
core   +1 more source

Slab tracks in the context of railway track reconstruction

, 2004
U radu se ukazuje na specifičnost projekta rekonstrukcije u odnosu na projekat nove pruge. Definiše se osnovna hijerarhijska šema za donošenje odluke o rekonstrukciji i obavezne faze izrade projektne dokumentacije. Posebno se obrazlažu specifični zahtevi rekonstrukcije gornjeg stroja.
Popović, Zdenka, Ilić, Čedomir
openaire   +1 more source

Synergistic Engineering of Oxygen Vacancies and Topological Surface States in Bi2Te3/TiO2‐X Heterostructures for Highly Efficient Photothermal‐Driven CO2 Photoreduction

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Integrating the topological insulator Bi2Te3 with oxygen‐deficient TiO2‐X creates a synergistic platform for full‐spectrum CO2 reduction, achieving high‐selectivity C2+ production via enhanced photothermal catalysis and tailored charge dynamics.
Bingke Zhang, Chenchen Zhao, Jing Qiao, Changcun Li, Yang Wang, Xingshuo Liu, Dongbo Wang, Gang Liu, Zhao Qian, Rajeev Ahuja, Jinzhong Wang, Degang Zhao   +11 more
wiley   +1 more source

Multi-Objective Vibration Control of a Vehicle-Track-Bridge Coupled System Using Tuned Inerter Dampers Based on the FE-SEA Hybrid Method

Applied Sciences
To address the adverse effects of Tuned Inertia Dampers (TIDs) on track slab vibrations while controlling high-frequency rail vibrations, a hybrid Finite Element-Statistical Energy Analysis (FE-SEA) method is developed for modeling the vehicle-track ...
Xingxing Hu, Qingsong Feng, Min Yang, Jian Liu   +3 more
doaj   +1 more source

Great Lakes all-weather ice information system [PDF]

A system is described which utilizes an X-band Side-Looking-Airborne-Radar (SLAR) for determining type, location, and aerial distribution of the ice cover in the Great Lakes and an airborne, S-band, short pulse radar for obtaining ice thickness. The SLAR
Cooper, D. W., Gedney, R. T., Heighway, J. E., Holmes, A. D., Jirberg, R. J., Mark, H., Mueller, R. A., Schertler, R. J.   +7 more
core   +1 more source

Evaluation of Modeling Assumptions for Predicting Structural Damage and Train Derailment Under Earthquake Loading

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT The rapid development of new railway networks and the aging of existing infrastructure in seismic‐prone regions continue to motivate the need for efficient methods to simulate the dynamic behavior of coupled train track structure systems. While detailed train–structure interaction (TSI) models can capture complex mechanisms, they are often too
Miguel A. Gomez, Matthew J. DeJong
wiley   +1 more source

Shape of the ocean surface and implications for the Earth's interior: GEOS-3 results [PDF]

A new set of 1 deg x 1 deg mean free air anomalies was used to construct a gravimetric geoid by Stokes' formula for the Indian Ocean. Utilizing such 1 deg x 1 deg geoid comparisons were made with GEOS-3 radar altimeter estimates of geoid height.
Bodine, J. H., Chapman, M. E., Kahle, H., Talwani, M.   +3 more
core   +1 more source