Results 31 to 40 of about 80,175 (200)

Tailoring Plate Thickness of a Helmholtz Resonator for Improved Sound Attenuation [PDF]

, 2016
A Helmholtz resonator with flexible plate attenuates noise in exhaust ducts, and the transmission loss function quantifies the amount of filtered noise at a desired frequency.
Duncan, Scott, Nudehi, Shahin
core   +2 more sources

Dynamic Analysis of Gear Systems with Dynamic Mesh Stiffness and Time- Varying Bearing Stiffness

Nonlinear Dynamics
Abstract In this study, a novel analytical model for dynamic mesh stiffness of spur gears is developed using variable cross-section beam theory, explicitly accounting for driving speed effects. The dynamic mesh stiffness is determined by applying the modal superposition method to analytical model equations, and subsequently validated using both
Lili Zhang, Dayi Qu, Hanjun Jiang, Fuhao Liu, Meng Rao, Chao Ye, Baogang Li, Hao Wu, Delong Shao   +8 more
openaire   +1 more source

Effective Width of Floor Systems for Application in Seismic Analysis [PDF]

, 1980
Effective width coefficients for floor systems have been developed for use in the analysis of frames subjected to lateral seismic loads. The results cover a wide range of the governing nondimensional parameters, and are applicable to floor slabs with ...
Coctran, F.S., Hall, W.J.
core  

Time-varying mesh stiffness of gears under interfacial characteristic effects

Advances in Engineering Research Possibilities and Challenges
To investigate the variation characteristics of gear time-varying mesh stiffness under asperity-dominated contact, utilizing the geometric relationship formula for double-tooth engagement and surface topography, the fractal theory was employed to describe the gear profile.
Hao Wu, Hanjun Jiang, Delong Shao
openaire   +1 more source

Consideration of the restriction of lateral contraction in the elastic behaviour of cohesive zone models

, 2015
Cohesive zone models do not consider the lateral contraction of adhesive layers under tensile loads. The constraint of the lateral contraction by the adherents which depends on the geometry of the adhesive layer has a major influence on the normal ...
Hesebeck, Olaf
core   +1 more source

NONLINEAR DYNAMIC RESPONSES OF LOCOMOTIVE EXCITED BY RAIL CORRUGATION AND GEAR TIME-VARYING MESH STIFFNESS

Transport, 2022
Rail corrugation is usually generated in modern railway transportations, such as high-speed railway, urban railway, and heavy-haul railway. It is one of the major excitations to the wheel–rail dynamic interaction, which will cause extra vibration and noise, failures, or even risk of derailment to the vehicle and its components.
Chen, Zaigang, Zhang, Jie, Wang, Kaiyun, Liu, Pengfei   +3 more
openaire   +3 more sources

Calculation of AGARD Wing 445.6 Flutter Using Navier-Stokes Aerodynamics [PDF]

, 1993
An unsteady, 3D, implicit upwind Euler/Navier-Stokes algorithm is here used to compute the flutter characteristics of Wing 445.6, the AGARD standard aeroelastic configuration for dynamic response, with a view to the discrepancy between Euler ...
Anderson W. K., Anderson W. K., Baldwin B., Batina J. T., Bennett R.M., Cunningham H. J., Desmarais R. N., Edwards J. W., Equations, Johnson D., Lee-Rausch E. M., Mohr R. W., Obayashi S., Rausch D., Rausch R. D., Rausch R.D., Robinson B. A., Seidel D. A., Wings, Yang T. Y., Yates E. C., Yates E. C., Jr.   +21 more
core   +3 more sources

A method for static and dynamic load analysis of standard and modified spur gears [PDF]

, 1983
The mesh stiffness and dynamic load characteristics for several cases of the Normal Contract Ratio and High Contact ratio gearing. The considered contact ratios were grouped in the general range of 1.7,2.0, and 2.3.
Kasuba, R.
core   +1 more source

Helical gear wear monitoring: Modelling and experimental validation [PDF]

, 2017
Gear tooth surface wear is a common failure mode. It occurs over relatively long periods of service nonetheless, it degrades operating efficiency and leads to other major failures such as excessive tooth removal and catastrophic breakage.
Ball, Andrew D., Brethee, Khaldoon F., Gu, Fengshou, Zhen, Dong   +3 more
core   +1 more source

Investigation on the Stationary Response of Gear Time-varying System Under Stochastic Excitation

Jixie chuandong, 2021
The study on stationary dynamic response of a gear transmission system with time-varying mesh stiffness subjected to stationary stochastic external excitation is carried out.
Junwei Shen, Heng Cheng
doaj