CASASP: COMPUTER-AIDED SIMULATION AND ANALYSIS OF SCULPTURED PARTS IN 3-DIMENSION (DESIGN)

MICHAEL JAMES RIDER, Purdue University

Abstract

When introduced nearly two decades ago, Computer Aided Design (CAD) systems were prohibitively expensive for all but the major shipbuilding, automotive, and aircraft industries. With the advent of minicomputers and the inexpensive integrated circuit chip, CAD systems have become practical for even small design departments and engineering firms. The current trend is toward a more sophisticated CAD system than has been known in the past. This research is an attempt to produce a sophisticated, yet highly interactive CAD system and to use this system to assist in the design of a complex machine, for example, an industrial sewing mechanism. CASASP (Computer Aided Simulation and Analysis of Sculptured Parts) is the result of this research. It allows the designer to create sculptured parts by inputting plain cross-sections through a digitizing tablet. The equations of motion can be attached to each part so a simulation can be displayed on a graphics output device. The simulation can be interrupted to perform analysis and output graphical data. Parts may be edited then archived by the user. This design has proven successful enough to justify continued development beyond the scope of this thesis. Future extensions will include N/C program preparation to automatically produce machine parts, and part silhouette generation for optical comparator use. The ability to produce a catalog of both perspective and orthographic views of each part may also be added.

Degree

Ph.D.

Subject Area

Mechanical engineering

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