volume 34, issue 10, P857-864 1994
DOI: 10.1002/pen.760341011
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Abstract: Amherst. Massachusetts 01 003Two-dimensional indenters (flat plate and cylinder) were used to compress rectangular and trapezoidal foam energy absorbers as a function of polymer, foam density, and thickness. An increased deformation volume formed when the indenter contact area was less than the foam absorber area, resulting in both increased energy absorption and stress transmitted to the indenter (i.e., "load spreading"). The deformation volume was trapezoidal, not prismatic, and was characterized by the ind…

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