Results 151 to 160 of about 6,692,173 (358)
Maximum principles for elliptic systems
Journal of Mathematical Analysis and Applications, 1991 A generalized maximum principle is established for a weakly coupled second-order elliptic system of the type \(Lu+Cu=0\) in \(D\subset\mathbb{R}^ n\), where \(L\) is a second order real elliptic operator and the matrix \(C=C(x)\) is such that \(C^*(x)B+BC(x)\leq 0\) in \(D\), where \(B>0\) is a complex constant matrix.
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Advanced Engineering Materials, EarlyView.A laboratory‐scale procedure is developed to evaluate the efficiency of melt‐cleaning and drossing fluxes during aluminium alloy recycling, studying their effects on melt cleanliness and tensile properties of secondary foundry alloys. This work provides a practical tool for foundries and aluminium refiners to assess the efficiency of salt fluxes in ...
Veronica Milani, Giulio Timelli
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A parameter-free smoothness indicator for high-resolution finite element schemes
Open Mathematics, 2013 Kuzmin Dmitri, Schieweck Friedhelm
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The maximum principle and biharmonic functions
Journal of Mathematical Analysis and Applications, 1961 AbstractThis note concerns the maximum principle which applies to solutions of partial differential equations of elliptic type. This principle asserts that the maximum of a solution occurs on the boundary of a region. Consideration of the ratio of solutions of an elliptic equation shows that the ratio satisfies the same maximum principle.
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Advanced Engineering Materials, EarlyView.Rotary friction welding of steel E355 and the aluminum alloy EN AW‐6082 can lead to the formation of brittle intermetallic phases. The primary process parameters are varied in order to determine their influence on this intermetallic phase formation and the resulting mechanical properties.
Laura Huber +4 more
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Journal of Inequalities and Applications, 2009 We obtain the maximum principles for the first-order neutral functional differential equation where , and are linear continuous operators, and are positive operators, is the space of continuous functions, and is the space of essentially ...
Domoshnitsky Alexander +2 more
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Advanced Engineering Materials, EarlyView.This study identifies 12 wt% indium (In) as the optimal composition for Sn0.5Ag0.7Cu5Bi solder joints, achieving 87% ductile fracture and 81% suppression of intermetallic compound (IMC) growth versus 4 wt% In. High‐In alloys (15–17 wt%) show abnormal IMC thickening due to thermal activation.
Liuwei Wang +11 more
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Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2004 The aim of the paper is to give strong maximum principles for implicit non-linear parabolic functional-differential problems together with initial inequalities in relatively arbitrary $(n+1)$-dimensional time - space sets more general than cylindrical ...
Ludwik Byszewski
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Maximum principles for fourth order ordinary differential inequalities
, 1981 D. R. Dunninger
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Advanced Engineering Materials, EarlyView.Steel samples are investigated using complementary simulations and measurements. Transmission electron microscopy in bright‐field mode, combined with energy‐dispersive X‐ray spectroscopy maps for titanium and niobium, reveals distinct particle populations. Simulations reproduce these in size and composition.
Marc Laub +3 more
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