Results 11 to 20 of about 31,292 (255)

Deformation constitutive model of subgrade soil under intermittent cyclic loading [PDF]

Scientific Reports, 2023
During the actual operation of subways, high-speed railway, and other infrastructure, subgrade soil will be subjected to periodic vibration and intermittent loading, i.e., intermittent cyclic load.
Bolang Zhang, Kaisheng Chen, Xing Hu, Xingwei Zhang, Guofu Luo, Rongya Chen   +5 more
doaj   +4 more sources

Evolution of the Damping Ratio Considering Cyclic Confining Pressure Under Intermittent Cyclic Loading

Buildings
The damping ratio is essential to conducting dynamic analysis for underground engineering under traffic loading. Variations in the damping ratio are usually studied using cyclic triaxial tests with continuous cyclic loading; however, intermittent loading
Juehao Huang, Chao Meng, Yongqiang Zhou, Jian Chen, Xiaodong Fu, Mingyi Wang   +5 more
doaj   +4 more sources

INFLUENCE OF INTERMITTENT CYCLIC LOADING ON REINFORCED CONCRETE RESISTANCE MODEL [PDF]

e-GFOS, 2017
This article describes the study of reinforced concrete span bending structures under conditions of high-level cyclic loading. Previous studies on the development of physical models of bending reinforced concrete element fatigue resistance, cyclic effect
Vasyl Karpiuk, Anatoliy Kostiuk, Oksana Maistrenko, Yulia Somina   +3 more
doaj   +2 more sources

A time-dependent reliability model for spatial intermittent motion mechanisms via constant-amplitude alternating fatigue load equivalent method [PDF]

Scientific Reports
Spatial intermittent motion mechanisms encompass non-continuously operating mechanisms in spacecraft, such as rotary tables, Solar Array Drive Assemblies (SADA), and spaceborne camera focusing mechanisms.
Penghui Cheng, Tianhe Zhang, Yongsheng Zhu   +2 more
doaj   +2 more sources

A bioreactor-based platform for investigating the early response of human periodontal ligament stem cells to intermittent mechanical stretching [PDF]

Frontiers in Bioengineering and Biotechnology
During development and daily activities, biological tissues are frequently exposed to mechanical stimuli, which are crucial for tissue maintenance and regeneration. The periodontal ligament (PDL), which connects the tooth root to the alveolar bone of the
Giovanni Putame, Giovanni Putame, Beatrice Masante, Beatrice Masante, Beatrice Masante, Marta Tosini, Marta Tosini, Andrea T. Lugas, Andrea T. Lugas, Ilaria Roato, Mara Terzini, Mara Terzini, Alberto L. Audenino, Alberto L. Audenino, Federico Mussano, Diana Massai, Diana Massai   +16 more
doaj   +2 more sources

Damage and Deterioration Characteristics of Sandstone Under Multi-Stage Equal-Amplitude Intermittent Cyclic Loading and Unloading

Buildings
The surrounding rocks of roadways are typically subjected to cyclic loading–unloading stress states in underground engineering. In addition, cyclic loads are discontinuous under real working conditions, usually while loading rock mass in a cycle ...
Ning Jiang, Yangyang Zhang, Zhiyou Gao, Genwang Zhang, Quanlin Feng, Chao Gong   +5 more
doaj   +2 more sources

Shear behaviors of intermittent joints subjected to shearing cycles under constant normal stiffness conditions: Effects of loading parameters

Journal of Rock Mechanics and Geotechnical Engineering
A conceptual model of intermittent joints is introduced to the cyclic shear test in the laboratory to explore the effects of loading parameters on its shear behavior under cyclic shear loading. The results show that the loading parameters (initial normal
Bin Wang, Yujing Jiang, Qiangyong Zhang, Hongbin Chen   +3 more
doaj   +3 more sources

Intermittent cyclic load testing of polymer railway sleepers [PDF]

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2021
Before a new type of railway sleeper can be used in track, standardised laboratory tests must be carried out to determine its suitability. In addition to static load tests, assessments usually include cyclic load tests consisting of millions of load cycles, representing passing trains during the sleeper’s service life.
Aran van Belkom, Matthias Pittrich, Vit Lojda   +2 more
openaire   +3 more sources

Effects of intermittent cyclic loading with cyclic confining pressure on deformation behaviors of saturated clay

Yantu gongcheng xuebao, 2023
Traffic loading is composed of cyclic loading and intermittent periods, in which the influences of intermittent period on the dynamic characteristics of soil cannot be ignored.
HUANG Juehao 1, 2, WANG Hongchao 3, CHEN Jian 1, 2, FU Xiaodong 1, 2, YAN Xiaoling 4, 1, MA Chao 1
doaj   +1 more source

Research on the Accumulated Pore Pressure of Expansive Soil under Subway Loading

Buildings, 2023
Taking the expansive soil near Hefei Xinqiao International Airport as the research subject, indoor dynamic triaxial tests were conducted to investigate the influence of different loading methods on the dynamic pore pressure of saturated remolded ...
Lin Qing, Lei Zhu, Ying Guo, Gan Cheng
doaj   +1 more source