نتایج جستجو برای: geometric modeling

تعداد نتایج: 471233  

Journal: :APPLIED GEOMETRY AND ENGINEERING GRAPHICS 2020

2013
André Dietrich Sebastian Zug Jörg Kaiser

Flexible system configurations and adaptability to changing environments and environmental conditions are key concerns for autonomous systems in future applications, either in industrial production processes, building automation, or health-care scenarios. New technologies for instrumented and smart environments support the distribution and acquisition of a diversity of information, but the orga...

2004
CHRISTOPH M. HOFFMANN

Simplicial Complexes and Geometric Realization Since we de ned simplices as convex combinations of points, it is conceivable that this de nition is too narrow. That is, when constructing a simplicial complex, can we obtain more complicated structures using simplices that are only homeomorphic to convex combinations? From a topological point of view, the answer is no, and is justi ed as follows....

2004
Chandrajit L. Bajaj

Piecewise polynomials of some xed degree and continuously di erentiable upto some order are known as splines or nite elements. Splines are used in applications ranging from image processing, computer aided design, to the solution of partial di erential equations via nite element analysis. The spline tting problem of constructing a mesh of nite elements that interpolate or approximate multivaria...

2010
Chandrajit Bajaj Andrew Gillette

2 Smoothing Polyhedra 13 2.1 C1 Continuity and Compatibility Conditions . . . . . . . . . . . . . . . . . . . . . . 13 2.1.1 Necessary and Sufficiency Conditions . . . . . . . . . . . . . . . . . . . . . . . 14 2.1.2 Compatibility and Non-Singularity Constraints . . . . . . . . . . . . . . . . . 14 2.2 Polyhedra Smoothing Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2....

2004
Stefanie Hahmann Gershon Elber

Freeform curves, surface and solids are generally represented in B-spline basis. Various geometric quantities, such as control points, knots and weights have to be specified. Controlling the shape of an object under complex deformations by manipulating the control points directly is often difficult. The movement of control points gives an indication of the resulting deformation, but being extra...

Journal: :journal of applied and computational mechanics 2014
ali akbar ansarifard abdolrahman jaamialahmadi

this paper presents the effects of geometric tolerances on the rotating shafts natural frequencies. due to modeling the tolerances, a code is written in matlab 2013 software that produces deviated points. deviated points are controlled by different geometric tolerances, including cylindricity, total run-out and coaxiality tolerances. final surfaces and models passing through the points are crea...

2003
JUNTA DOI YOHEI MIYAMOTO SHINGO ANDO TETSUO MIYAKE

A new and versatile method of geometric modeling is proposed. Methods of geometric modeling for the object shape approximation proposed so far are “modeling-after-measurement,” but this proposal is “measurement-after-modeling.” A three-dimensional geometric model is transferred to another geometric model, by modifying the geometry of each mesh point, based on multi-directional images of the new...

Journal: :Des. Codes Cryptography 2008
Andrea Blunck Hans Havlicek Corrado Zanella

The generalized chain geometry over the local ring K(ε;σ) of twisted dual numbers, where K is a finite field, is interpreted as a divisible design obtained from an imprimitive group action. Its combinatorial properties as well as a geometric model in 4-space are investigated. Mathematics Subject Classification (2000): 51E05, 51B15, 51E20, 51E25, 51A45.

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