By Christopher Tong (Eds.)
Read or Download Artificial Intelligence in Engineering Design. Models of Innovative Design, Reasoning about Physical Systems, and Reasoning about Geometry PDF
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Additional info for Artificial Intelligence in Engineering Design. Models of Innovative Design, Reasoning about Physical Systems, and Reasoning about Geometry
Much has been learned regard ing qualitatively reasoning about physical systems in general. We have initial answers to such questions as: how to qualitatively simulate certain classes of physical systems; how to derive aggregate system behavior from the behavior of the parts; how to determine the function of the system given its aggregate be havior and a description of the system’s context; etc. Much also has learned about (qualitatively) reasoning about the geometry of physical objects in general: how to satisfy placement and sizing constraints; how to satisfy con straints involving forces being applied at various points in space; how to satisfy kinematic constraints on how physical structures can move; how to analyze stresses based on shape; and how to simulate a mechanism’s movement through space.
One reason is that the most naturally acquirable knowledge might not necessarily be in a directly ap plicable form. This is often so in case-based reasoning; old designs and design process traces can be stored away fairly easily (if stored verbatim) in a case database, but then this leaves the problem of how to use these old cases to help solve a new design problem. ). , the generalized knowledge is not quite operational and must be made so at run-time; the (overly) generalized knowledge is not quite correct in all the circumstances to which it appears to be applicable; etc.
Geometry-based analysis. That designed artifacts have geometric features means that some of the analysis processes performed during design will involve geometric reasoning, including: static and dynamic analysis of stresses (based on shape), and kinematic simulation of mechanisms. The conventional approach to analyzing stress is finite element analysis. However, this method requires a grid as an input, and which grid is best varies with the problem. , a plate without a hole in it). These known cases have as sociated (pre-computed) stress analyses, which are then used as part of the stress analysis data for the overall object.