Results 61 to 70 of about 531 (135)

Vibration of a Cylindrical Tunnel under a Centric Point-Source Explosion

Shock and Vibration, 2017
Underground tunnels are vulnerable to terrorists’ bombing attacks, which calls for studies on tunnel’s response to internal explosive loading. In this paper, the dynamic response of a cylindrical tunnel to an ideal centric point explosion was treated as ...
Yuetang Zhao, Cheng Chu, Anastasios Vafeidis, Jie Li   +3 more
doaj   +1 more source

Seismic Analysis of Wood-Stone Structures with Three Degree of Freedom Systems

BioResources
Wood and stone have different damping ratios. The seismic analysis of wood-stone structures is important. The vertical wood-stone structure is regarded as a three degree of freedom system.
Gangzhu Sun, Guosen Zhou, Panxu Sun
doaj  

The nonlinear transient thermoelastic analysis of functionally graded sandwich plates rested on partially elastic foundations

Engineering Science and Technology, an International Journal
This paper presents a nonlinear transient thermoelastic analysis of functionally graded sandwich (FGSW) plates with a metal core and FGM skin layers resting on partially elastic foundations (p-EF).
Ngoc-Tu Do, Trung Thanh Tran, Quoc Hoa Pham, Vu Khac Trai   +3 more
doaj   +1 more source

Analysis of rotor vibration characteristics of surface mounted permanent magnet synchronous motor under air gap eccentricity fault

Journal of Low Frequency Noise, Vibration and Active Control
Taking a permanent magnet synchronous motor as the research object, the effect of air gap eccentricity fault on the vibration response characteristics of the motor rotor is analyzed through theoretical calculations, numerical simulation and finite ...
Rui Zhu, Tianzhen Jiang, Xin Tong, Qingpeng Han, Keyuan He, Siyu Xu, Mingxin Wang   +6 more
doaj   +1 more source

PARAMETER STABILITY AND VIBRATION CHARACTERISTICS ANALYSIS OF GEAR TRANSMISSION SYSTEM

Jixie qiangdu, 2019
Considering the time-varying meshing stiffness and gear backlash, a dynamic model of gear transmission system is established. The Floquet theory is used to obtain the approximate analytic solution and the stability boundary curve of the transmission ...
WAN ZhiGuo, LI SuoBin, DOU YiHua, ZHANG MingQuan   +3 more
doaj  

An explicit time-domain method for non-stationary random analysis of nonlinear frame structures with plastic hinges. [PDF]

Sci Rep, 2022
Huang H, Li Y, Li W, Tang G, Lv Y.
europepmc   +1 more source

Analysis of Train-Track-Bridge Coupling Vibration Characteristics for Heavy-Haul Railway Based on Virtual Work Principle. [PDF]

Sensors (Basel), 2023
Wu N, Yang H, Afsar H, Wang B, Fan J.
europepmc   +1 more source

Impact-Rubbing Dynamics of Rotor with Hollow Shaft and Offset Discs Based on MDOF Timoshenko Beam Theory

Shock and Vibration
The impact-rubbing dynamic characteristics of the power turbine rotor with the hollow shaft and offset discs for aircraft engine are investigated, and the impact-rubbing analytical method for the complex rotor based on MDOP Timoshenko beam theory is ...
Guofang Nan, Xia Yao, Jingya Yao, Chao Wang   +3 more
doaj   +1 more source

Nonlinear dynamic characteristics induced by inter-shaft rub-impact in a counter-rotational dual-rotor system of aeroengine

Journal of Low Frequency Noise, Vibration and Active Control
The influence and mechanism of inter-shaft rub-impact have not been given a wide attention in exciting literature. This paper aims to insight into the coupled bending-torsional analysis of a counter-rotational dual-rotor system nonlinear vibration ...
Zhidong Wu, Long Hao, Wei Zhao, Kun Wu, Binglong Zhang, Qingjun Zhao   +5 more
doaj   +1 more source

Online engagement, resilience, and loneliness among older people during the COVID-19 pandemic. [PDF]

Soc Sci Med, 2023
Zhang K, Burr JA, Mutchler JE, Lu J.
europepmc   +1 more source