نتایج جستجو برای: thermal and mechanical loads

تعداد نتایج: 16914589  

Journal: :Vietnam Journal of Mechanics 2023

Despite the extensive use of thin-walled structures, studies on their behaviours when exposed to extreme thermal environment are relatively scarce. Therefore, this paper aims present buckling analysis composite I-beams under thermo-mechanical loads. The effects investigated for case studied beams undergoing a uniform temperature rise through thickness. theory is based first-order shear deformat...

H. Ashuri,

Loading conditions and complex geometry have led the cylinder heads to become the most challenging parts of diesel engines. One of the most important durability problems in diesel engines is due to the cracks valves bridge area. The purpose of this study is a thermo-mechanical analysis of cylinder heads of diesel engines using a two-layer viscoelasticity model. The results of the thermo-mechani...

ژورنال: Journal of Railway Research 2014
Farrahi, G.H., Masoudi Nejad, R., Salehi, S.M,

This paper presents the prediction of fatigue life and crack propagation in the railway wheel due to the stress field caused by mechanical loads and press fitting process of a railway wheel. A 3-D nonlinear stress analysis model has been applied to estimate stress fields of the railway wheel in press fitting process. Finite element analysis model is presented applying the elastic–plastic fin...

In this paper, a novel real time pricing design is presented for Demand Response (DR) programs. A Load Serving Entity (LSE) is responsible to provide energy for flexible loads, inflexible loads and thermal loads. The LSE consider operation conditions of system and uncertainty of renewable energy resources and it designs a Real Time Price (RTP) demand response. The inflexible and thermal loads c...

M. Kalantar and G. Fantozzi,

Dense Silicon nitride was investigated to determine the effect of its microstructural parameters and densification on thermo-mechanical properties and thermal stress resistance to fracture initiation during a hot or cold mechanical and thermal shock testing. The different materials and microstructures were obtained by changing the parameters such as the type of the powder, additive, forming p...

Journal: :Production Engineering 2013
C. Eichenseer I. Wittmann C. Hartig G. A. Schneider N. Schell W. Hintze

To completely understand wear mechanisms of mixed ceramic cutting tools (Al 2 O 3-TiC), residual stress states and the superposition of external loads during hard turning should be investigated. This can be done via X-ray diffraction using high-energy synchrotron radiation to determine lattice strains in the material. For this reason, in first model tests, strain states in mixed ceramics were d...

M. Kalantar and G. Fantozzi,

Dense Silicon nitride was investigated to determine the effect of its microstructural parameters and densification on thermo-mechanical properties and thermal stress resistance to fracture initiation during a hot or cold mechanical and thermal shock testing. The different materials and microstructures were obtained by changing the parameters such as the type of the powder, additive, forming p...

2013
Zuguang Bian Jizhou Song R. Chad Webb Andrew P. Bonifas John A. Rogers Yonggang Huang

Recent work establishes that ultrathin, stretchable sensors can enable high precision thermal characterization of the skin, with capabilities for spatial mapping, in forms that avoid irritation, thermal or mechanical loads on natural behaviors, or motion artifacts. The results have potential for use in cardiovascular screening, skin hydration sensing, and local skin heating and thermal therapy....

Journal: :نشریه بازیافت آب 0
سید سجاد زارع دانشگاه تهران، پردیس دانشکده های فنی، دانشکدة مهندسی عمران سارا نظیف دانشگاه تهران، پردیس دانشکده های فنی، دانشکدة مهندسی عمران ناصر مهردادی دانشگاه تهران، دانشکدة محیط زیست، گروه مهندسی محیط زیست

osa (oxic settling anoxic) process is one of the sludge reduction methods. in this method an anaerobic reactor is placed in activated sludge recycling line for sludge reduction purpose. this method is getting popular because of possibility of its application in currently operating waste water treatment plants. in this research, the performance of osa process in sludge reduction in sbr was impro...

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