Holographic Evaluation of Warp in the Torsion of a Bar of Cellular Solid
Holographic Evaluation of Warp in the Torsion of a Bar of Cellular Solid
复制标题
多孔固体棒扭转翘曲的全息评估
DOI：
10.1177/0262489319951401001
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发表时间：
1995
影响因子：
1.6
通讯作者：
Mark C. Smith
中科院分区：
文献类型：
--
作者：
W. Anderson;R. Lakes;Mark C. Smith
全息方法被用来检查在蜂窝状固体，聚甲基丙烯酰胺闭孔泡沫的变形。一个正方形截面的杆件承受静态扭转变形。观察到泡沫条的翘曲变形小于用作对照的均质聚合物条。均匀杆服从经典弹性力学的预言。泡沫条的行为与Cosserat弹性一致。在Cosserat实体中，连续体中的点旋转和平移，并且材料支撑每单位面积的耦合以及每单位面积的力。Cosserat效应很重要，因为它们可以增强韧性
Holographic methods are utilized to examine deformations in a cellular solid, polymethacrylamide closed cell foam. A square cross section bar is subjected to static torsional deformation. The warp deformation is observed to be less in a foam bar than in a homogeneous polymeric bar used as a control. The homogeneous bar obeys the predictions of classical elasticity. Behaviour of the foam bar is consistent with Cosserat elasticity. In a Cosserat solid, points in the continuum rotate as well as translate, and the material supports couple per unit area as well as force per unit area. Cosserat effects are important since they can lead to enhanced toughness