This paper presents a methodology to obtain transitional objects’ shapes by a physics-based simulation. Given two 2D/3D images of different objects or of the same object at different instants, using the Finite Element Method two models are built, and the Lagrange’s equation is solved to simulate the involved deformation. We used and compared two different finite elements to build each objects’ ...

cussed how cyclic voltammetry could be used to achieve a qualitative understanding of electrochemical mechanisms, particularly those that involve chemical reactions coupled to the electron transfer reaction(s). However, since the effects of mass transport, electron transfer kinetics and the kinetics of coupled chemical reactions on a cyclic voltammogram cannot generally be separated, the extrac...

We present a volumetric iso-geometric finite element analysis based on Catmull-Clark solids. This concept allows one to use the same representation for the modeling, the physical simulation, and the visualization, which optimizes the design process and narrows the gap between CAD and CAE. In our method the boundary of the solid model is a Catmull-Clark surface with optional corners and creases ...

the liquid metal flow and the solidification behaviours in a multi-cavity casting mould of two automotive cast parts were simulated in three dimensions. the commercial code, flow-3d® was used because it can track the front of the molten metal by a volume of fluid (vof) method and allows complicated parts to be modeled by the fractional area/volume obstacle representation (favor) method. the gre...

This paper presents a system for design and simulation of supporting tube structure. We model each freeform tube component as a swept surface, and employ boundary control and skeletal control to manipulate its cross-sections and its embedding respectively. With the parametrization of the swept surface, a quadrilateral mesh consisting of nine-node general shell elements is automatically generate...

Different simulation methods are most effective at different length scales, which motivate efforts to simulate overall multi-scale systems by linking multiple simulation codes created by experts at each scale. There are numerous examples where length and time scales are coupled in a serial fashion, where the results from a simulation code are used in another simulation code [1-7]. For example, ...

We present an alternative approach to standard geometric shape editing using physically-based simulation. With our technique, the user can deform complex objects in real-time. The enabling technology of this approach is a fast and accurate finite element implementation of an elasto-plastic material model, specifically designed for interactive shape manipulation. Using quadratic shape functions,...

Acoustic simulation of sound propagation inside the vocal tract is a key element speech research, especially for articulatory synthesis, which allows one to relate physics production other fields science, such as perception. Usual methods, transmission line method, have very low computational cost and perform relatively good up 4-5 kHz, but are not satisfying above. Fully numerical 3D methods f...

let g be a group. a subset x of g is a set of pairwise noncommuting elements if xy ̸= yx for any two distinct elements x and y in x. if |x| ≥ |y | for any other set of pairwise non-commuting elements y in g, then x is said to be a maximal subset of pairwise non-commuting elements. in this paper we determine the cardinality of a maximal subset of pairwise non-commuting elements in any non-abelian...