Results 101 to 110 of about 73,038 (292)

Study on the dynamic contact relationship between layers under temperature gradients in CRTSⅢ ballastless track

open access: yesHigh-Speed Railway
In areas with large temperature differences, the uneven distribution of temperatures in the CRTS III ballastless track slab due to daytime sunlight can cause warpage deformation, leading to periodic rail irregularities that increase the wheel-rail impact
Lei Zhao   +4 more
doaj   +1 more source

Research related to vibrations from high speed railway traffic

open access: yes, 2008
We discuss here recent results from several research programmes related to dynamic aspects and vibrations induced by high speed railway traffic, developed at the computational mechanics group, within the “Escuela de Ingenieros de Caminos” of the ...
Gabaldón Castillo, Felipe   +1 more
core  

Nonlinear damping of slab modes and cosmic ray transport

open access: yes, 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   +27 more
core   +1 more source

Mechanical property variation mechanisms of granite subjected to real‐time high temperatures and subsequent cooling treatment

open access: yesDeep Underground Science and Engineering, EarlyView.
This study investigates the coupled thermo‐mechanical behavior of granite during heating and cooling through a combination of laboratory tests and finite element analysis. The thermal conductivity, mineral composition, mass loss rate, micro‐crack observation, and thermal fracture characteristics of granite under various temperature conditions are ...
Rui Pang   +8 more
wiley   +1 more source

Strengthening urban resilience in China through underground infrastructures management: Addressing global climate challenges with technological solutions

open access: yesDeep Underground Science and Engineering, EarlyView.
This paper explores how climate‐resilient technologies, such as smart grids, digital twins, and self‐healing materials, can enhance urban resilience. It highlights the urgent need for proactive planning, public‐private collaboration, and data‐driven innovation to future‐proof underground infrastructure amid accelerating climate and urban pressures ...
Kai Chen Goh   +12 more
wiley   +1 more source

Phanerozoic Large Igneous Province, Petroleum System, and Source Rock Links

open access: yesGeophysical Monograph Series, Page 191-228., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Steven C. Bergman   +2 more
wiley  

+1 more source

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

open access: yesShock 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   +5 more
doaj   +1 more source

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

open access: yesProceedings 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   +3 more
openaire   +2 more sources

Entropy‐Driven Design of Stable High‐Performance Sodium‐Ion Battery Cathodes

open access: yesEcoEnergy, EarlyView.
This review explores high‐entropy strategies for advanced sodium‐ion battery cathodes, focusing on LTMOs and PBAs. It details how entropy engineering mitigates challenges: phase transitions, interface degradation, and air instability in LTMOs; vacancy defects and crystalline water in PBAs.
Feng Zhan   +8 more
wiley   +1 more source

Research on Stresses of Narrow Joints Caused by Construction Process of CRTSIISlab Track

open access: yesMATEC Web of Conferences, 2018
A separate finite element model of 1/4 unit track slab of CRTS IIslab track was established for the analysis of the influence of construction process on stresses of narrow joints.
Zhu Yongjian
doaj   +1 more source

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