Results 21 to 30 of about 3,249,194 (167)

Load Transfer Efficiency Based on Structural Deflection Assessment of the Precast Floating Track

Applied Sciences, 2020
In Korea, a precast floating track with anti-vibration isolators was recently developed to reduce the vibration and noise in urban railway stations, without disrupting train operations.
Linh Vu, Yun Suk Kang
doaj   +1 more source

Dynamic modeling of a metro vehicle considering the motor–gearbox transmission system under traction conditions [PDF]

Mechanical Sciences, 2022
As a vital means of transportation to alleviate urban traffic congestion, the metro vehicle has been developing rapidly in China during recent years. For the violent vibration and shock under the frequent switches between traction and braking conditions,
T. Zhang, T. Zhang, T. Jin, Z. Zhou, Z. Chen, K. Wang   +5 more
doaj   +1 more source

Stair‐Climbing Wheelchairs for Enhanced Mobility: A Comprehensive Review of Fundamental Mechanisms, Design Concepts, and Performance Analysis

Journal of Field Robotics, EarlyView.
ABSTRACT People with physical disabilities face significant mobility challenges while climbing uneven surfaces and staircases. In these circumstances, traditional wheelchairs do not provide stable, safely controlled mobility, underscoring the importance of building superior stair‐climbing wheelchairs for both medical and infrastructure purposes.
Gopisetti Manikanta, S. M. Abhinandan, Anand Reddy, G. Chandana, Divya, P. Anil Kumar, Ch. Venkata Rao, Ashish Garg, Ravi C. Soni, Jogendra Kumar, Bhargav Akkinepally   +10 more
wiley   +1 more source

Crosswind stability and critical safe speed of medium-duty box trucks on expressways under strong-wind conditions

Frontiers in Future Transportation
IntroductionCrosswind-induced rollover is a major safety concern for medium-duty box trucks operating on expressways in high–wind regions. Existing crosswind studies have substantially improved the understanding of aerodynamic loading and vehicle dynamic
Shasha Jiang, Wuping Ran, Yuan Ling, Long Cheng, Weihao Xie, Jiayi Niu, Jingjin Wang, Zhibobo Xing   +7 more
doaj   +1 more source

ADAPT: An Autonomous Forklift for Construction Site Operation

Journal of Field Robotics, EarlyView.
ABSTRACT Efficient material logistics are critical in controlling costs and schedules in the construction industry. However, manual material handling remains prone to inefficiencies, delays, and safety risks. Autonomous forklifts offer a solution to streamline on‐site logistics, reducing reliance on human operators and mitigating labor shortages.
Johannes Huemer, Markus Murschitz, Matthias Schörghuber, Lukas Reisinger, Thomas Kadiofsky, Christoph Weidinger, Mario Niedermeyer, Benedikt Widy, Marcel Zeilinger, Csaba Beleznai, Tobias Glück, Andreas Kugi, Patrik Zips   +12 more
wiley   +1 more source

DDPG-Based Decision-Making Strategy of Adaptive Cruising for Heavy Vehicles Considering Stability

IEEE Access, 2020
The decision-making system of intelligent vehicles is the core component of an advanced driving system for both passenger vehicles and commercial vehicles. Finding ways to improve decision-making strategies to suit the complex and unfamiliar environments
Ming Sun, Weiqiang Zhao, Guanghao Song, Zhigen Nie, Xiaojian Han, Yang Liu   +5 more
doaj   +1 more source

Study of instability mechanisms of trucks turning right at long downhill T-junctions based on Trucksim simulation.

PLoS ONE, 2023
The aim of this study was to investigate the influence of road factors on the safety speed threshold of a lorry turning right around a corner at a the bottom of a long downhill T-junction.
Shibo Zhang, Yishan Liu, Pingfei Li, Li Wang, Xixi Zhou, Yi Li, Yong Luo   +6 more
doaj   +1 more source

Evaluation of Sustainable Urban Design With a Focus on Spatial Organization and Climatic Analysis

Sustainable Development, EarlyView.
ABSTRACT The urban heat island (UHI) effect increases with the growth of cities and population. This situation triggers global climate change, and cities are negatively affected by this situation. In this study, five provinces (Antalya, Gaziantep, Bursa, Kayseri, and Erzurum) located in different climate zones in Turkey were selected as samples ...
Ahmet Salih Günaydın, Murat Yücekaya
wiley   +1 more source

Effect of journal arrangement on load-bearing capacity of high-speed train axles

机车电传动, 2022
Theoretical models, finite element models and vehicle system dynamics models of both inside and outside journal high- speed train axles were established for the load-bearing capacity analysis, then the load-bearing states, stress distribution ...
GUO Feng, LIU Jianxin, WU Shengchuan, CAI Jiufeng   +3 more
doaj  

Press Hardening for Sustainable Lightweight Chassis Design in Heavy‐Duty Vehicles: A Material Performance and Life Cycle Assessment Approach

steel research international, EarlyView.
The article explores how high‐strength steels and press hardening revolutionize lightweight chassis design for heavy‐duty vehicles. It reveals that press hardened steels combined with shot peening can cut weight by up to 34% and reduce environmental impact by 21%–32%.
Violeta Vargas‐Parra, Sergi Parareda, Jose Jorge Espí‐Gallart, Jaume Pujante, Gustaf Gustafsson, Henrik Sieurin, David Frómeta, Daniel Casellas   +7 more
wiley   +1 more source