Autor: Das, D. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Hydrodynamic forces on a submerged horizontal circular cylinder in uniform finite depth ice covered water
Autorzy:: Sahu, M.
Das, D.
Powiązania:: https://bibliotekanauki.pl/articles/1839795.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: fala powierzchniowa
elektrodynamika
dyfrakcja fal
wave scattering
hydrodynamic forces
submerged cylinder
ice-covered water
Opis:: Hydrodynamic forces on a submerged cylinder in uniform finite depth ice-covered water is formulated by using the method of multipoles, the ice-cover being modelled as an elastic plate of very small thickness. The forces (vertical and horizontal) are obtained analytically as well as numerically and depicted graphically for various values of flexural rigidity of the ice-cover to show the effect of its presence. When the flexural rigidity and surface density of the ice-cover are taken to be zero, then the curves for the forces almost coincide with the curves for the case of uniform finite depth water with free surface.
Źródło:: International Journal of Applied Mechanics and Engineering; 2020, 25, 3; 219-227
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Parametric studies of failure mechanisms in thermal barrier coatings during thermal cycling using FEM
Autorzy:: Srivathsa, B.
Das, D. K.
Powiązania:: https://bibliotekanauki.pl/articles/266255.pdf
Data publikacji:: 2015
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: thermal barrier coatings
residual stress
failure mechanisms
modeling and simulation
naprężenia szczątkowe
mechanizm uszkodzenia
modelowanie
symulacja
Opis:: Thermal barrier coatings (TBCs) are widely used on different hot components of gas turbine engines such as blades and vanes. Although, several mechanisms for the failure of the TBCs have been suggested, it is largely accepted that the durability of these coatings is primarily determined by the residual stresses that are developed during the thermal cycling. In the present study, the residual stress build-up in an electron beam physical vapour deposition (EB-PVD) based TBCs on a coupon during thermal cycling has been studied by varying three parameters such as the cooling rate, TBC thickness and substrate thickness. A two-dimensional thermomechanical generalized plane strain finite element simulations have been performed for thousand cycles. It was observed that these variations change the stress profile significantly and the stress severity factor increases non-linearly. Overall, the predictions of the model agree with reported experimental results and help in predicting the failure mechanisms.
Źródło:: International Journal of Applied Mechanics and Engineering; 2015, 20, 4; 899-915
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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