Object-oriented mathematical modelling—Applied to machine elements

Fritzson, Dag; Fritzson, Peter; Viklund, Lars; Herber, Johan

doi:10.1016/0045-7949(94)90332-8

Cited by 8 publications

(3 citation statements)

References 7 publications

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“…Fully object oriented modeling languages with inheritance were developed later, e.g. in the Omola language [3,32] and the Ob-jectMath language which also introduced generic model classes with type parameters [12,15,13]. Later versions of Dymola [6] also include inheritance.…”

Section: A Modelica-based Design Simulation and 3d Visualization Enmentioning

confidence: 99%

Thesis Overview

2014

Parliamentary Representation of Citizens Preferences

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Section: A Modelica-based Design Simulation and 3d Visualization Enmentioning

confidence: 99%

Thesis Overview

2014

Parliamentary Representation of Citizens Preferences

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“…In the context discussed here, REIS should be interpreted primarily as an object-oriented data management system that focuses specificaNy on the requirements of a particular application area (e.g., analogous to the system described by Fritzson to support mechanical engineering activity [6]), rather than as a truely general purpose object-oriented support system or objectoriented database management system.…”

Section: Constraintsmentioning

confidence: 99%

Using the Linda distribution paradigm to address a variety of computational balancing concerns

Cummings

Ford

1992

Proceedings of the 1992 ACM/SIGAPP Symposium on Applied Computing: Technological Challenges of the 1990's

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The design and efficient operation of a distributed information system to support scientific modeling is subject to a variety of balancing concerns, such as conlputation, data, and communication) load and constraints on the use of restricted-license third-party software conlpoIlents, special purpose 1/0 devices, and large data resources. The Regional Ecosystem Information System (REIS described here uses object-oriented principles to separate abstract system objects from site-specific, representation dependeut data files and executable. REIS is implemcmtcd using an object, manager that provides the translation between abstract accesses and accesses to physically distributed system elements, and a distribution manager based on a version of the Linda distribution paradigm that supports actual access to physically distributed objects. Au overview of REIS design is presented, along with preliminary results on some basic performance attributes of this approach to distribution and balancing. OverviewThe design of a modern networked inforlnation system requires consideration of a number of conflicting factors related to system performance, cost, and configuration. C,enerally the system designer must "balance" these factors to determine how a configuration can be built to provide acceptable performance at a reasonable price. There is extensive computing literature related to balancing compution load and message traffic in a distributed system in the execution of a particular algorithm or "nlix" of processes. However, a system designer typically has to address much more severe a pr-Jor~con-figuration constraints before the system evcu begins to Permission to copy without fee all or part of this material ia granted provided that the copies are not made or distributed for direct commercial edvantage, the ACM copyright notice and the title of the publication and its date appear, and notice is given that copying ia by permission of the Association for Computing Machinery. To copy otherwise, or to republish, requires a fee and/or specific permission. Q 1992 ACM O-89791 -502 -X/92 /0002 /0767... S 1.50 function, such as what resources will exist, where they will be located, and how they can be used before tlIe traditional balancing approactles can even I)e corlsidered.Our application is one with these sort of complex configuration balancing factors. It involves potentially lengthy computations, large cumulative data storage requirements and large individllal data objects, interfaces with expeusivr specialized input/output devices. and interfaces with expensive third-party software subsystems, [n such an ellvironmerrt the rr prlon" /JalanCln~de-cisions inhere)]t i]] the selm-t ion of particular peripheral configurations, mapping of (Iata ot~jects to physical data storage, an(i software licensing arrangement is likely to have much more impact 011 system pcrforrtlanre than any subsequent attempt to (Distribute t be rolllputatiolõ r message loa~l across tile n,sourcrs. Giv(>n the importance of these configuration dt'cisions and t...

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“…Scientific literature regarding bearings is particularly rich: hundreds or even thousands of books, thousands of patents, (tens of) thousands of articles published in specialized magazines and bulletins of professional conferences. Relatively few of them [4] [5] [6] [7] addresses to mathematical models to study bearings either in their entirety or on certain issues. Special mention must be given to doctoral theses in the field; major scientific papers have a higher consistency and originality.…”

Section: Introductionmentioning

confidence: 99%

Heavy Bearings Exploitation Energy and Reduction Methods

Szekely

Cioară

2016

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The global trend of resource conservation so as "not to compromise the ability of future generation's development" is the fundamental basis of the concept of sustainable development. Concordant with this, the energy efficiency of products is increasingly discussed and frequently taken into account in the design stage. In more cases a product is more appreciated and more attractive as the energy consumption and its associated materials are lower. In the production stage, said consumption advantages primarily the manufacturer, particularly through low consumption thereof. In the operational phase, low energy and materials consumption represents an user advantage and it's a major argument in the decision to purchase and use a particular product. Heavy bearings are frequent products used in wind turbines that are producing non-conventional "clean" energy, as windmills. An enhanced energy efficiency bearing contributes to the enhancement of the overall efficiency of the wind turbines. Based on a suitable mathematical model, this paper identifies and recommends courses of action to reduce the operating energy of heavy bearing through the "cage" -which is the subject of a much larger research -with the highest priority. The identified actions may constitute from a set of requirements for the design stage of the heavy bearing predominantly oriented towards innovation-invention.

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Object-oriented mathematical modelling—Applied to machine elements

Cited by 8 publications

References 7 publications

Thesis Overview

Thesis Overview

Using the Linda distribution paradigm to address a variety of computational balancing concerns

Heavy Bearings Exploitation Energy and Reduction Methods

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