Autor: Ahmadi, M. T. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Physical properties of psyllium seed
Autorzy:: Ahmadi, R.
Kalbasi-Ashtari, A.
Gharibzahedi, S.M.T.
Powiązania:: https://bibliotekanauki.pl/articles/24892.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: physical property
psyllium
seed
postharvest technology
Plantago ovata
India
plant cultivation
Opis:: Physical properties ie dimensions, volume, surface area, sphericity, true density, porosity, angle of repose, terminal velocity, static and dynamic friction coefficients on plywood, stainless steel, glass and galvanized iron sheet, force required for initiating seed rupture in horizontal and vertical orientations of psylliumseed at amoisture content of 7.2%(w.b.)were determined.
Źródło:: International Agrophysics; 2012, 26, 1
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Earthquake analysis of arch dams including the effects of foundation discontinuities and proper boundary conditions
Autorzy:: Ferdousi, A.
Mostafa Gharabaghi, A. R.
Ahmadi, M. T.
Chenaghlou, M. R.
Emami Tabrizi, M.
Powiązania:: https://bibliotekanauki.pl/articles/279306.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: concrete arch dam
non-homogeneous and discontinuous rock foundation
nonlinear dynamic analysis
boundary conditions
Opis:: The interaction between dam foundation and rocks plays a significant role in the design and analysis of concrete arch dams. In the current study, comprehensive dynamic analysis of the dam-reservoir-foundation system is performed by developing a non-linear finite element program. The objective of this paper is to study the seismic behavior of a concrete arch dam taking into account the effects of foundation discontinuities and foundation inhomogeneity on the stability. Proper modeling truncated boundary conditions at the far-end of the foundation and reservoir fluid domain as well as to correctly apply the in-situ stresses for the foundation rock represents field conditions in the model more realistically. In this paper, the nonlinear seismic response of the dam-reservoir-foundation system includes dam-canyon interaction, dam body contraction joint opening, discontinuities (possible sliding planes) of the foundation rock and the failure of the joined rock and concrete materials. The results for the Karun 4 dam as a case study revealed the substantial effect of modeling discontinuities and boundary conditions of the rock foundation under seismic excitation that needs to be considered in the design of new dams and can be applied to seismic safety evaluation of the existing dams.
Źródło:: Journal of Theoretical and Applied Mechanics; 2014, 52, 3; 579-594
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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