Results 21 to 30 of about 5,548,205 (246)

Study on the influence of the seafloor soft soil layer on seismic ground motion [PDF]

Natural Hazards and Earth System Sciences, 2021
In the complex medium system of the sea area, the overlying seawater and the surface soft soil have a significant impact on the seafloor ground motion, which brings great seismic risk to the safety of offshore-engineering structures.
J. Lan, J. Liu, X. Song
doaj   +1 more source

The Optimization of Aircraft Acceleration Response and EDR Estimation Based on Linear Turbulence Field Approximation

Atmosphere, 2021
The estimation of aircraft vertical acceleration response to atmospheric turbulence is fundamental to acceleration-based eddy dissipation rate (EDR) estimation.
Debao Wang, Zhenxing Gao, Hongbin Gu, Xinyu Guan   +3 more
doaj   +1 more source

Effects and mechanisms of ground vibration randomness on peak surface acceleration

Yantu gongcheng xuebao, 2023
The randomness of artificial seismic vibration has important influences on the peak value of ground acceleration. Based on the results of soil layer shear wave velocity and soil body nonlinear statistics, three soil layer seismic response models are ...
QI Wenhao 1, 2, CHEN Fangxiao 1, 2, LI Linfang 1, 2, ZHANG Xiankai 1, 2
doaj   +1 more source

An Investigation into the Application of Acceleration Responses’ Trendline for Bridge Damage Detection Using Quadratic Regression

Sensors
It has been proven that structural damage can be successfully identified using trendlines of structural acceleration responses. In previous numerical and experimental studies, the Savitzky–Golay filter and moving average filter were adjusted to determine
Hadi Kordestani, Chunwei Zhang, Ali Arab
doaj   +1 more source

Acceleration in turbulent channel flow

, 2010
We use Direct Numerical Simulations of turbulent channel flow to study the acceleration A corresponding to the full fluid velocity u and the acceleration a corresponding to the fluctuating velocity u? ? u?hui where hui is the mean flow.
S. W. Coleman, Z. Hu, Chen, L., Vassilicos, J.C., L. Chen, Hu, Zhiwei, Coleman, S.W., J. C. Vassilicos   +7 more
core   +1 more source

Photon acceleration by laser produced wakefields on Astra [PDF]

, 2004
This chapter looks at photon acceleration by laser produced wakefields on ...
Thomas, A.G.R., Trines, Raoul M. G. M., Mangles, S.P.D., Norreys, P.A., Bingham, Robert, Divall, E.J., Najmudin, Z, Foster, P.S., Langley, A.J., Collier, J.L., Hooker, C.J., Viskup, Richard, Jaroszynski, Dino, Reitsma, Albert, Gallacher, J. G., Krushelnick, K., Murphy, C.D., Smith, J,M.   +17 more
core   +4 more sources

Inertial Subrange Optimization in Eddy Dissipation Rate Estimation and Aircraft-Dependent Bumpiness Estimation

Aerospace
Atmospheric turbulence leads to aircraft bumpiness. In current vertical wind-based eddy dissipation rate (EDR) estimation algorithms based on flight data, the inertial subrange is determined empirically.
Zhenxing Gao, Qilin Zhang, Kai Qi
doaj   +1 more source

Study on the Seismic Response of a Water-Conveyance Tunnel Considering Non-Uniform Longitudinal Subsurface Geometry and Obliquely Incident SV-Waves

Applied Sciences
The longitudinal seismic response characteristics of a shallow-buried water-conveyance tunnel under non-uniform longitudinal subsurface geometry and obliquely incident SV-waves was studied using the numerical method, where the effect of the non-uniform ...
Erlei Yao, Yu Rao, Meishan Liu, Zhifang Liu, Ang Cao   +4 more
doaj   +1 more source

Hydromechanical coupling analysis of dynamic response of seepage slope under earthquake

Shuili Shuiyun Gongcheng Xuebao, 2017
A 3D model for a rock bedded slope considering groundwater fluctuation is established by the finite difference software FLAC3D. Firstly, the hydromechanical coupling effect is considered on the basis of the dynamic response and a dynamic pore-pressure ...
LIANG Chao, ZHANG Jinliang, LIAN Jijian
doaj   +1 more source

Generation of quasi-monoenergetic protons from thin multi-ion foils by a combination of laser radiation pressure acceleration and shielded Coulomb repulsion [PDF]

, 2013
We study theoretically and numerically the acceleration of protons by a combination of laser radiation pressure acceleration and Coulomb repulsion of carbon ions in a multi-ion thin foil made of carbon and hydrogen.
He, Minqing, Wang, Jyhpung, Liu, Tung-Chang, Shao, Xi, Chen, Shih-Hung, Liu, Chuan-Sheng, Su, Jao-Jang, Eliasson, Bengt, Tripathi, Vipin   +8 more
core   +4 more sources