Ray tracing from finite element results

Victor L. Genberg

doi:10.1117/12.156632

16 September 1993 Ray tracing from finite element results

Victor L. Genberg

Proceedings Volume 1998, Optomechanical Design; (1993) https://doi.org/10.1117/12.156632
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

A finite element program such as NASTRAN provides displacements and rotations at grid points only. When ray tracing on a deformed surface, it is necessary to accurately determine the displacement and slope at all ray intersections which seldom occur at grid points. This paper describes a general purpose post-processing program to accurately interpolate over a model, using element shape functions. The user may specify a choice of linear interpolation or cubic interpolation for plate and shell models.

Citation Download Citation

Victor L. Genberg "Ray tracing from finite element results", Proc. SPIE 1998, Optomechanical Design, (16 September 1993); https://doi.org/10.1117/12.156632

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