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Stabilization and projection methods for multibody dynamics

In recent years, there has been growing interest in stabilized index reduction techniques for differential-algebraic equations (DAE) of multibody dynamics. A number of the proposals which incorporate the idea of a projection onto the constraint manifold are discussed. The methods are divided into classes based on whether the projection is performed on the residuals of the discretized DAE or on the

Danska, skånska, svenska: före och efter 1658

Scania became part of Sweden after the peace treaty in Roskilde 1658. The article discusses the linguistic effects of the change in political status. The official written language in the province took over the differentiating features from the Swedish written language quite soon (after 50 years or so) and probably also the spoken urban language was to some extent influenced by Swedish. The dialect

A Parametric Analysis of the Gear Surface Roughness After Hobbing

Hobbing is a common manufacturing method when producing helical, involute gears. In order to give the manufactured gear a controlled surface smoothness, a method to, very accurately, determine the achieved surface geometry is needed. In this report, the cutting surfaces of the tool, of which the cutting edges are the boundaries, are assumed to be plane in arbitrary directions. They are mathematica