Thomas A. Grandine, Ph.D.
Tom Grandine is a specialist in geometric modeling and numerical analysis in the
Mathematics and Engineering Analysis group in Phantom Works. His areas of
expertise include curve and surface modeling, numerical approximation, splines, and
multidisciplinary design optimization. He has extensive experience in computationalmethods for both design and manufacturing applications.
Applications of Contouring
In the early 1990’s, Boeing developed an accurate, robust, numerical contouring code for solving surface intersection problems. Since then, many additional and unexpected uses for that code have been found. This talk reviews the essential of the numerical method, and outlines how it has been used to solve surface intersection and curve projection problems, to generate horizon lines on surfaces, and to create fillet surfaces and envelope curves, as well as additional applications that have arisen at Boeing in manufacturing, engineering, and machining.
One Day in the Life of Splines at Boeing
This talk highlights some of the ways that spline functions have influenced the design and manufacture of air and space vehicles at Boeing during the past 30 years. The two main uses have been as a means of representing design geometry and a method for constructing models of engineering analysis and test data. This has occurred across four different types of engineering applications: Geometric modeling, analysis and simulation, manufacturing, and embedded systems.
Geometric Knowledge Capture for Engineering Design and Analysis
Over the past 25 years, Boeing has made considerable beneficial use of scriptable geometry systems, including AGPS and ICAD. Such systems have the advantage that design knowledge and rules can be captured in the form of executable scripts which can be transferred between engineering groups and reused over and over again. The strategy has proven to be very effective, and it promises to continue to be useful for a very long time. This talk explores the attributes of such systems in the context of currently available knowledge capture technology and discuss the benefits and shortcomings of the approach. The talk also describes the GEODUCK project, a Boeing effort begun in 2007 intended to standardize this technology inside the company and capitalize on all that has been learned so far about scriptable geometry systems.