The structural optimization models in this directory are based on various equivalent formulations of the minimum compliance structural optimization problem as described in in "Optimization methods for truss geometry and topology design", Bendsoe, Ben-Tal, and Zowe, Structural Optimization, 141-159, 7, 1994.
The output file, thickenss.wrl, produced by
structure4.mod was used to produced the
3-D vrml model that you can view by clicking on the image below.