Results 21 to 30 of about 9,443,546 (299)

Posture and Dynamics Analysis of Hydraulic Support with Joint Clearance under Impact Load

Machines, 2023
A hydraulic support is one of the key pieces of equipment in a fully mechanized coal-mining face. The shaft is seriously worn due to repeated support shifting in coal-mining operations, and the hydraulic support bears a large amount of impact load in the
Qingliang Zeng, Penghui Xu, Zhaosheng Meng, Chen Ma, Xiaowan Lei   +4 more
doaj   +1 more source

Evaluation of Steel Frame Equipped with the Replaceable Shear Link Made of Shape Memory Alloy under the Impact Load [PDF]

Journal of Rehabilitation in Civil Engineering
Despite their low stiffness, moment frames (MFs) are considered conventional lateral strength systems for low- and moderate-rise structures due to their ability to absorb energy and provide suitable ductility, along with architectural considerations.
Reza Kamgar, Seyed Ali Mahmoudy, Roham Zakavi   +2 more
doaj   +1 more source

Experimental study on anchoring crack-resistance effects of prestressed anchor under impact loads

Yantu gongcheng xuebao, 2023
Under the action of mining stresses and impact dynamic loads, the development, expansion and instability of the primary fissures in the surrounding rock of deep roadways are an important cause for the dynamic disasters of the deep surrounding rock, and ...
ZU Guoli 1, WANG Jun 1, 2, NING Jianguo 1, PU Zhiqiang 2, YAN Liheng 3, REN Zhiwei 1, HU Hao 4
doaj   +1 more source

Experimental Research on the Impact Resistance of Partially Precast Concrete Beams Strengthened with Bonded Steel Plates

Applied Sciences, 2023
A structure may be exposed to a range of unexpected loads throughout its full life cycle. Partially precast concrete (PC) beams refer to the process of manufacturing concrete beams in which one part of the component is pre−fabricated in a factory and the
Xueyuan Yan, Tianxiao Zheng, Cihang Lin, Guoguan Lan, Huimin Mao   +4 more
doaj   +1 more source

Experimental research on influence of wave environment on high-speed water entry load and trajectory characteristics

Xibei Gongye Daxue Xuebao, 2021
Wave environment is a common fact happened when objects enter water under real conditions, which changes the morphology of the free interface when entering water.
Yang Xiaoguang, Dang Jianjun, Wang Peng, Wang Yadong, Han Yingjun, Chen Cheng, Li Deying   +6 more
doaj   +1 more source

Effect of Impact Load on Splice Length of Reinforcing Bars

International Journal of Concrete Structures and Materials, 2020
Impact loading damage of reinforced concrete (RC) members deteriorates bond strength of reinforcing bars. To understand the effect of strain rate on the bond strength of reinforcing bars in RC beams under impact load, drop hammer test was performed on ...
Hyeon-Jong Hwang, Fan Yang, Li Zang, Jang-Woon Baek, Gao Ma   +4 more
doaj   +1 more source

Charpy Impact Properties of Hydrogen-Exposed 316L Stainless Steel at Ambient and Cryogenic Temperatures

Metals, 2019
316L stainless steel is a promising material candidate for a hydrogen containment system. However, when in contact with hydrogen, the material could be degraded by hydrogen embrittlement (HE).
Le Thanh Hung Nguyen, Jae-Sik Hwang, Myung-Sung Kim, Jeong-Hyeon Kim, Seul-Kee Kim, Jae-Myung Lee   +5 more
doaj   +1 more source

Investigation of the Impact Strength of the Epoxy-Polyester Material for Using in Aggressive Environments in the Water Transport

Communications, 2021
The influence of the aggressive environments of river water, seawater, oil, petrol and sodium hydroxide on the impact strength of epoxy-polyester composite was investigated. Testing was conducted by two different methods.
Serhii Yakushchenko, Mykola Brailo, Andriy Buketov, Anna Sapronova, Oleksandr Sapronov, Abdellah Menou   +5 more
doaj   +1 more source

A load forecasting method for steel industry based on ICEEMDAN

Zhejiang dianli
In response to the challenge of low accuracy in load forecasting for the steel industry， a load forecasting approach is introduced based on ICEEMDAN （improved complete ensemble empirical mode decomposition with adaptive noise）.
ZHANG Si, LI Yang, WANG Bo, ZHU Geng, HE Xu   +4 more
doaj   +1 more source

Bridging the Loneliness Gap: Depression, Connectivity, and Isolation in Pediatric Oncology Patients and Their Peers

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Loneliness is associated with adverse physical and mental health outcomes and remains understudied in children and adolescents undergoing cancer therapy. Pediatric oncology patients may be at increased risk due to medical isolation and disruption of social networks.
Charlotte N. Stahlfeld, Scott H. Maurer, Michelle D. Watkinson, John Nury, Elise Barberis, Molly C. Mack   +5 more
wiley   +1 more source