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This paper explores the capabilities within Thermal Desktop and Nastran to evaluate thermal stress and distortion in fabricated metal components subject to large temperature gradients. A comparison is made of the different construction methods and modeling techniques. Results are included on the time required for constructing, executing, and reporting on this type of analysis along with the author's suggestions for optimum use of time. The presented analysis considers a pipe loop used to, thermally, condition a small cold plate. Different methods of attaching the pipe loop and different material combinations for the plate and pipe loop determine the thermal stresses and the plate distortion that will occur.

Audio systems in automobiles are under intense development to improve volume and clarity of sound. With the advent of high performance rare earth magnets, the magnetic properties of the mating components becomes a significant factor in loudspeaker performance. This paper describes the initial testing of various P/M irons for use in the design of shellpots.