Zobrazeno 1 - 10
of 55
pro vyhledávání: '"M. Ben Tahar"'
Extrusion dies are typically produced by hot work steels with a great diffusion of AISI H-11 (1.2343) and AISI H-13 (1.2344) steels. Nevertheless different steels for hot working application are available on the market and several new steel grades ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______4094::a4b670bc1ba47e59fc0d93ce0fe2ba67
http://hdl.handle.net/11585/698921
http://hdl.handle.net/11585/698921
Publikováno v:
Journal of Sound and Vibration. 429:45-62
Railway rolling noise is the main source of noise from trains at speeds below about 300 km/h. At the wheel–rail contact area, the track and the wheel are dynamically excited and vibrate together to emit the well-known rolling noise. The rail lies o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5e6ae428cd0634f13737289489422c4
https://doi.org/10.1016/j.jsv.2018.05.011
https://doi.org/10.1016/j.jsv.2018.05.011
In the present research, an innovative testing method, specifically developed to characterize the tool steels under creep-fatigue conditions, was carried out on a TQ1 (X36CrMoV5-2) hot-work tool steel in cooperation with Constellium R&D center. The e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98c8ddd4fa2252f073d4436865ead83e
https://hdl.handle.net/11380/1155152
https://hdl.handle.net/11380/1155152
Publikováno v:
Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72e217c1e491940089c484cb44cf79ac
https://doi.org/10.4203/ccp.110.181
https://doi.org/10.4203/ccp.110.181
Publikováno v:
International Journal for Numerical Methods in Engineering. 63:974-987
This is the second of two articles that focus on the dispersion properties of finite element models for acoustic propagation on mean flows. We consider finite element methods based on linear potential theory in which the acoustic disturbance is model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ad6d3f90d1eb619062172b0c612c2d9
https://doi.org/10.1002/nme.1319
https://doi.org/10.1002/nme.1319
Publikováno v:
International Journal for Numerical Methods in Engineering. 63:947-973
The dispersion properties of finite element models for aeroacoustic propagation based on the convected scalar Helmholtz equation and on the Galbrun equation are examined. The current study focusses on the effect of the mean flow on the dispersion and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::965b855ba39ef7f0e07617b3af354592
https://doi.org/10.1002/nme.1308
https://doi.org/10.1002/nme.1308
Publikováno v:
The Journal of the Acoustical Society of America. 105:2557-2564
The boundary element method is used to model two-dimensional acoustic radiation and scattering from a body of arbitrary shape above an infinite plane of flat surface and homogeneous impedance. The particularity of the study is the use of an indirect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::215a71103be134a31556c3ae6e59c7c1
https://doi.org/10.1121/1.426865
https://doi.org/10.1121/1.426865
Autor:
Chafik Karra, M. Ben Tahar
Publikováno v:
Flow, Turbulence and Combustion. 61:179-187
This paper presents a variational formulation for the study of the acoustic propagation and radiation of a vibrating membrane coupled to a cavity filled with a visco-thermal fluid. This formulation is obtained by combining a variational formulation b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0332fc0db7c458aadafdc4a3061213be
https://doi.org/10.1023/a:1026446021667
https://doi.org/10.1023/a:1026446021667
An integral equation formulation for boundary element analysis of propagation in viscothermal fluids
Autor:
M. Ben Tahar, Chafik Karra
Publikováno v:
The Journal of the Acoustical Society of America. 102:1311-1318
A new variational formulation using integral equations for the resolution of a propagation problem in a viscous and thermally conducting fluid is investigated. Numerical techniques are applied to a geometry of revolution. Results are compared to an a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2acee8ba21a45035be5427435df7e7b0
https://doi.org/10.1121/1.420050
https://doi.org/10.1121/1.420050
Publikováno v:
The Journal of the Acoustical Society of America. 100:166-177
A method for predicting acoustic pressure radiated by a duct opening with internal axial flow, based upon mixed experimental and numerical tools, is presented. It is applied to a six‐bladed/one stator configuration axial fan cowled by a cylindrical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bea5c4fc3fc07cc2b3f421202bf1664d
https://doi.org/10.1121/1.415920
https://doi.org/10.1121/1.415920