Results 51 to 60 of about 860,624 (236)

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

Experimental and Dynamic Study of the Piston Rod Lateral Friction for the Twin-Tube Hydraulic Shock Absorber

Shock and Vibration, 2003
In this paper, dynamic loads acting on a twin-tube hydraulic shock absorber are derived out both in wheel and axle planes by modeling mechanically car rear suspensions, and internal and external forces that yield lateral surface damage and wear-out of ...
Yanqing Liu, Jianwu Zhang, Xiaoming Cheng   +2 more
doaj   +1 more source

Exponentially‐constrained Gaussian mixture model for quantifying vertical development of water‐conducting fracture zones in lithologically stratified mining roofs

Deep Underground Science and Engineering, EarlyView.
This study proposes an exponentially‐constrained Gaussian mixture model (EcGMM) to quantify vertical fracture heterogeneity in stratified roof strata. The model integrates a piecewise exponential decay term capturing global stress dissipation with Gaussian components representing localized fracture intensification at lithological interfaces.
Huiqing Yuan, Zhimin Xu, Weixiao Chen, Chenghang Zhang, Shijie Xiong, Yajun Sun   +5 more
wiley   +1 more source

Дегазация рабочей жидкости гидравлического амортизатора

Вестник СибАДИ, 2017
The analysis of the reasons causing reduction of effectiveness of the hydraulic suspension shock absorbers of the car which developed the new technology of their production.
Oleg L'vovich Malomyzhev, Alexandr Georgievich Semenov, Vitaly Viktorovich Skutelinik   +2 more
doaj  

Glazing Effects on Dynamic‐Insulation TSC Façades: A CFD‐Supported Experimental Study of Flow, Heat Transfer, and Ventilation Preheating

Energy Science &Engineering, EarlyView.
Glazed transpired solar collectors achieve 48–75% efficiency and 11% more seasonal heat than unglazed designs by cutting convective losses, while both offer complementary benefits for ventilation preheating and dynamic wall insulation, with paybacks of 5.5–6.8 years.
Mohammad Fawaier, Nabeel Abushaban, Omar Alharasees, Safwan Al‐Qawabah, Ahmad Al Aboushi, Haitham A. Al Hasanat, Mohammad K. S. Ma'aitah, Laith Al‐Hyari   +7 more
wiley   +1 more source

Shock isolation using switchable stiffness

, 2008
This study investigates a novel stiffness control strategy applied to the problem of shock isolation. This is based on the principle that the stiffness and mass are the principal physical properties that control the passive system shock response.
Ledezma Ramirez, Diego Francisco
core   +1 more source

Suspension parameter design of underframe equipment considering series stiffness of shock absorber

Advances in Mechanical Engineering, 2020
In this article, a vertical rigid–flexible coupling model between the vehicle and the equipment is established. Considering the series stiffness of hydraulic shock absorbers, the underframe equipment is like a three-element-type Maxwell model dynamic ...
Jie Chen, Yangjun Wu, Xiaolong He, Limin Zhang, Shijie Dong   +4 more
doaj   +1 more source

Fracture Development Mechanism of Water‐Isolating Soil Layers During Downward Mining of Shallow‐Buried Coal Seam Groups

Energy Science &Engineering, EarlyView.
This study systematically investigates the fracture development mechanisms of water‐isolating soil layers under the coupled effects of repeated mining and groundwater seepage during the downward mining of shallow‐buried coal seams. The findings provide a theoretical basis for evaluating stratum stability and preventing roof water inrush.
Tao Yang, Shuqi Zhang, Jie Zhang, Haifei Lin, Dong Liu, Hui Liu, Yiming Zhang, Jianping Sun   +7 more
wiley   +1 more source

WORKING CHART AND THE FEATURES OF THE HYDRAULIC RELAXATION SHORK ABSORBER [PDF]

Avtomobilʹnyj Transport (Harʹkov), 2014
A study on the calculation of working diagrams and features of the hydraulic relaxation shock absorber with enhanced mechanical structure, which represents a fundamentally new design is presented in this paper.
I. Sidorenko, S. Robu, V. Volkov
doaj  

Reducing aeration and cavitation effect in shock absorbers using uid-structure interaction simulation

Computer Assisted Methods in Engineering and Science, 2017
This paper presents a fluid-structure interaction simulation applicable for evaluating and optimizing hydraulic valve designs. A special emphasis is placed on shim stack valve commonly used in automotive and railway shock absorbers.
Piotr Czop, Jacek Gniłka
doaj   +1 more source