Computer Aided Design

Encarnação, José L.; Schlechtendahl, E. G.

doi:10.1007/978-3-642-96710-8

Cited by 43 publications

(4 citation statements)

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“…In the field of electronic CAD, the concept of CAD framework was introduced with the goal of reducing the time and cost needed to develop or modify a CAD system according to the needs of its users and to support the interoperation of dissimilar systems [114]. At the end of this second phase, the specific focus (geometry induced algorithms, methods and tools), the mainstream activities, and the application domains of computer aided design have been identified [115].…”

Section: Consolidation and Diversificationmentioning

confidence: 99%

Ubiquitous computer aided design: A broken promise or a Sleeping Beauty?

Horváth

Vroom

2015

Computer-Aided Design

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Section: Consolidation and Diversificationmentioning

confidence: 99%

Ubiquitous computer aided design: A broken promise or a Sleeping Beauty?

Horváth

Vroom

2015

Computer-Aided Design

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“…The environment we describe in this paper has a structure analogous to the structure of the REGENT (Encarnacao and Schlechtendahl 1983) integrated system for computer aided design in mechanical engineering (Figure i). Figure 2 shows how this would be adapted to the situation of simulation modeling in CAD for manufacturing systems engineering.…”

Section: Introductionmentioning

confidence: 99%

Object oriented toolkits for simulation program generators

Ülgen

Thomasma

Mao

1989

Proceedings of the 21st Conference on Winter Simulation - WSC '89

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Simulation Program Generators (SPGs) developed using object-oriented environments may be designed to have a number of capabilities not available in traditional SPGs.One such capability is the description of an object's behavior from scratch without any programming when such behavior does not exist in the knowledgebase of the SPG.SmarterSim is an SPG that is currently being developed to provide the user a number of objectoriented tools including libraries of elemental operations, actions/requests, states, and rules and a number of function block templates to create new behavior using the existing primitive elements.The behavior of objects in a robotic manufacturing cell is described using SmarterSim.Like its predecessor SmartSim, SmarterSim supports a hierarchical, modular modeling for building of subsystems (coupled models) from model objects (atomic models) using subsystem management features. The paper also discusses the use of object oriented environments for traditional SPGs and simulation programming languages.

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“…However, the correctness of the construction process can be evaluated only on the basis of visual criteria of the user, i.e., from the mapping of geometric images on the screen with no way of using the knowledge base and system of logical inference, and no way of avoiding contradictions or automating the system of geometric proofs and constructions. What has just been said holds also in regard to the most widely used foreign software for computer-aided design, such as AutoCAD, CADPlan, EUCLID [7], etc.One of the central problems of constructive geometry is the optimization of the inramachine representations of complicated geometric objects (binary trees representing expressions over primitives in an algebra with signature f~ = {N*, t.J*, \* }, and also optimization of ring list structures representing the surfaces of complicated geometric objects) and algorithms over these representations. In particular the paper [9] already mentioned is devoted to these problems; in this paper quite efficient algorithms are proposed for minimizing binary trees.…”

mentioning

confidence: 95%

Technique and software for implementing interactive intelligent modules in geometric modeling systems

Perekhod¹,

Moseichuk²,

Popov³

1996

J Math Sci

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We consider methods of constructing intelligent systems of geometric modeling and propose a technique and software for implementing these methods. The results obtained can be used in computer-aided design.The construction of high-efficiency systems for computer-aided design (CAD) is a problem of current interest. The efficiency of such systems can be greatly elevated by using the modern achievements of computational and constructive geometry [9], methods of intelligent automated interactive programming [3], intelligent knowledge base systems, expert systems, decision-making systems, and methods of multi-criterial optimization.The general situation in the area under investigation can be characterized by the level attained in these areas of theoretical and applied science. The most important particular problems of computational and constructive geometry are: the algorithmic aspects of geometry, data structures for representing geometric objects, optimization of geometric data structures, synthesis of solid geometric objects, visualization of geometric objects, the finite element method, optimal triangulation algorithms, representation of geometric knowledge, elimination of contradictions, and automation of geometric proofs and constructions.Among the Russian publications in the area of constructive geometry one may note [1, 2], which are devoted to the axiomatization of the problem of synthesizing 3-dimensional objects. On the basis of these investigations, in particular, an interactive graphical system has been constructed for synthesizing an intramachine model of a 3-dimensional object via instructions for the positioning of the base elements (primitives) in space and prescribing geometric operations. However, the correctness of the construction process can be evaluated only on the basis of visual criteria of the user, i.e., from the mapping of geometric images on the screen with no way of using the knowledge base and system of logical inference, and no way of avoiding contradictions or automating the system of geometric proofs and constructions. What has just been said holds also in regard to the most widely used foreign software for computer-aided design, such as AutoCAD, CADPlan, EUCLID [7], etc.One of the central problems of constructive geometry is the optimization of the inramachine representations of complicated geometric objects (binary trees representing expressions over primitives in an algebra with signature f~ = {N*, t.J*, \* }, and also optimization of ring list structures representing the surfaces of complicated geometric objects) and algorithms over these representations. In particular the paper [9] already mentioned is devoted to these problems; in this paper quite efficient algorithms are proposed for minimizing binary trees. Also devoted to this topic is [8], in which a rapid algorithm is proposed for carrying out refined set-theoretic operations over constructively defined geometric objects. However questions as to the correctness of data structures (inconsistency and completeness of descriptio...

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Computer Aided Design

Cited by 43 publications

References 0 publications

Ubiquitous computer aided design: A broken promise or a Sleeping Beauty?

Ubiquitous computer aided design: A broken promise or a Sleeping Beauty?

Object oriented toolkits for simulation program generators

Technique and software for implementing interactive intelligent modules in geometric modeling systems

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