Showing papers on "Conceptual design published in 1970"

Conceptual design of a 150 kWe out-of-core nuclear thermionic converter system

Abstract: Nuclear thermionic systems conceptual design with converters outside reactor to reduce weight

Prototype-based Conceptual Design: The SECS System

Abstract: The paper investigates the problem of design synthesis with prototypes i.e., exemplary solutions in a given field which are obtained by generalization from a set of specific design cases. A framework for organizing prototypical knowledge using multiple models at different abstraction and generalization levels is described. Design synthesis with prototypes is modelled as a recoursive cycle consisting of recalling relevant prototypes, selecting most promising ones and adapting them to current situation. The approach is experimented using SECS a prototype-based system developed for supporting electronic engineers in the high level task of conceptual design of electronic circuits.

A fundamental approach to aircraft manufacturing cost estimating in the conceptual design phase

Abstract: Aircraft manufacturing cost estimation in conceptual design phase, using structural synthesis program for cost buildup simulation

Application Of The BEM In ConceptualMechanical Design

Abstract: The engineer working on conceptual design of engineering components is restricted by the precise requirements of most analysis methods. The development of a design can be greatly enhanced by the use of an analysis technique which allows a sketched geometric definition, automated development of the corresponding analysis model and rapid re-analysis given a design perturbation. This combination of features allows designers to experiment with radically different designs and to control an intuitive design optimisation based on their own experience but guided by the analysis results. The Boundary Element Method (BEM) is particularly well suited in this area because of the increased speed and reliability of automatically modified meshing. This paper describes the implementation of an Object-Oriented BEM system which fulfils this need.

An Active Information Systems Approach ToIndustrial Planning

Abstract: Industrial planning involves an in-depth understanding and continual consideration of all phases in the product lifecycle, and the interdependences of sub-tasks, from conceptual design to implementation and beyond. In some engineering disciplines; for example construction, the problem is compounded by the number and types of disparate disciplines involved in the lifecycle, and in the case of major projects, the final results are all too often characterised by budget deficits and project timescale overruns. This paper describes an approach to industrial planning which relies on a centralised symbolic model of the proposed project in terms of a fusion of three distinct relational models; component, action and resource. The paper describes the philosophy of modelbased planning and its application in the industrial context. 1.0 The problems of industrial planning Planning is not a trivial process, and conventional computer-based tools have satisfied only a small fraction of the needs of industrial users. The process involves an in-depth consideration of the entire lifecycle, and this can only be achieved through a thorough and up-to-date understanding, not only of the various sub-tasks in the process, but also an appreciation of their sometimescomplex interdependences. 'Conventional' tools are very efficient when used to present such information, and the best of them are designed to facilitate a good deal of project manipulation and experimentation through powerful userinteraction tools. However, the user of such systems has the responsibility of initially specifying the task-level project, based on personal understanding and expertise. It would assist greatly if the computer-based planning tool itself were able to automatically generate initial plans, based on specifications or product designs, and in addition were able to give advice on implications of design, production or specification/constraint changes. This paper describes two pieces of highly-related research and development in the area of model-based planning. The first deals with the problems of industrial design as a configuration problem, and the second is an example of planning subsequent to detailed