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. Author manuscript; available in PMC: 2009 Dec 1.
Published in final edited form as: J Biomech Eng. 2008 Dec;130(6):061010. doi: 10.1115/1.2979866

Figure 4.

Figure 4

Wrapping of a flat sheet into a partial cylinder. Surfaces are shown with respect to the global (X,Y,Z) coordinate system. (A,B) Estimated principal Eulerian strains using a dense, regular, marker array (1300 markers/unit area); (C,D) Estimated principal Eulerian strains using a less dense marker array (200 randomly distributed markers; 40 markers/unit area; see marker locations in upper panels). Differences between calculated and actual principal strains were on the order of 10−14 for the dense marker array and 10−2 for the sparse marker array (Table 1). Grey regions in the strain plots indicate regions where strain was not calculated due to insufficient marker density.