Titlebook: Rigid Finite Element Method in Analysis of Dynamics of Offshore Structures; Edmund Wittbrodt,Marek Szczotka,Stanisław Wojciech Book 2013 S

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Introduction,assembly works and specialized devices for laying pipes which transport oil and gas. A characteristic feature of their working conditions is sea waves causing significant movement of the base on which offshore structures are installed. This is a phenomenon which must be taken into consideration in design of such machines.

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Overview of Selected Problems in Offshore Technology, important elements of the infrastructure necessary for extracting oil and gas and methods of installation of offshore pipelines. Specific conditions pertaining to offshore cranes’ operation and their basic typology are presented.

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The Rigid Finite Element Method,ga Y., 1994], [Arteaga M. A., 1998], [Zienkiewicz O. C., Taylor R. L., 2000], [Berzeri M., et al., 2001], [Adamiec-Wójcik I., 2003], [Wittbrodt E., et al., 2006]. Chapter 9 introduces models of offshore cranes (a column one and an A-frame) which enable taking into account the flexibility of the supporting structure.

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Applications of Models of Offshore Structures,uctures designed. In the present chapter, dynamic models of the following are presented: a gantry suited for relocating sets of BOP valves on an extraction platform, a column crane and a device for laying pipes on the seabed. The formulation of models thereof leverages the methods described in earlier chapters.

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Homogeneous Transformations and Joint Coordinates in the Description of Geometry of Multibody Systesition to another is treated as a superposition of two motions: translation and rotation. As a consequence, if a position vector of a point in the movable coordinate system attached to the body is given, and a position vector of this point in the reference system is to be determined, two mathematica

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Selected Applications Related to Control of Offshore Structures,on,.■ minimization of the influence of sea waves on the device’s dynamics..The present chapter describes the basics of the method of selecting the drive functions based on dynamic optimization. Control of the drum of a winch of an A-frame type crane allowing it to compensate for vertical movements o

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Summary,when designing a given machine, companies also need quick and rough simulations, e.g. when preparing an offer (during initial negotiations with a counterparty). Calculations performed at the design stage are not significantly constrained by allowed duration of the simulation. On the other hand, cont

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Edmund Wittbrodt,Marek Szczotka,Andrzej Maczyński,Stanisław Wojciech

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