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41.
Laviniu Haller Boumedienne Nedjar Ziad Moumni Ioan Vedinaş Eugen Trană 《Continuum Mechanics and Thermodynamics》2016,28(4):957-975
Shape memory alloys (SMA) comport an interesting behavior. They can undertake large strains and then recover their undeformed shape by heating. In this context, one of the aspects that challenged many researchers was the development of a mathematical model to predict the behavior of a known SMA under real-life conditions, or finite strain. This paper is aimed at working out a finite strain mathematical model for a Ni–Ti SMA, under the superelastic experiment conditions and under uniaxial mechanical loading, based on the Zaki–Moumni 3D mathematical model developed under the small perturbations assumption. Within the current article, a comparison between experimental findings and calculated results is also investigated. The proposed finite strain mathematical model shows good agreement with experimental data. 相似文献
42.
Dr. Sumit Kumar Panja Dr. Boumediene Haddad Dr. Mansour Debdab Prof. Dr. Johannes Kiefer Dr. Yassine Chaker Dr. Serge Bresson Dr. Annalisa Paolone 《Chemphyschem》2019,20(7):936-940
Several recent studies of hydroxyl-functionalized ionic liquids (ILs) have shown that cation-cation interactions can be dominating these materials at the molecular level when the anion involved is weakly interacting. The hydrogen bonds between the like ions led to the formation of interesting chain-like, ring-like, or distinct dimeric (i. e. two ion pairs) supermolecular clusters. In the present work, vibrational spectroscopy (ATR-IR and Raman) and density functional theory (DFT) calculations of the hydroxyl-functionalized imidazolium ionic liquid C2OHmimCl indicate that anion-cation hydrogen bonding interactions are dominating, leading to the formation of distinct dimeric ion pair clusters. In this arrangement, the Cl− anions function as a bridge between the cations by establishing bifurcated hydrogen bonds with the OH group of one cation and the C(2)-H of another cation. Cation–cation interactions, on the other hand, do not play a significant role in the observed clusters. 相似文献
43.
Boumediene?AbdellaouiEmail author Ireneo?PeralEmail author 《Annali di Matematica Pura ed Applicata》2003,182(3):247-270
This paper deals with the existence and nonexistence results for quasilinear elliptic equations of the form -pu=f(x, u), where p:=div(|u|p-2u), p>1, and the solutions are understood in the sense of renormalized or, equivalently, entropy solutions. In particular we prove nonexistence results in the case f(x,u)=up|x|-p, that is related to a classical Hardy inequality. Mathematics Subject Classification (2000) 35D05, 35D10, 35J20, 35J25, 35J70 相似文献