Why is nacre strong? Elastic theory and fracture mechanics for biocomposites with stratified structures

被引：183

作者：

Okumura, K

de Gennes, PG

机构：

[1] Coll France, F-75231 Paris 05, France

[2] Inst Mol Sci, Aichi 4448585, Japan

[3] Ochanomizu Univ, Fac Sci, Dept Phys, Bunkyo Ku, Tokyo 1128610, Japan

来源：

EUROPEAN PHYSICAL JOURNAL E | 2001年 / 4卷 / 01期

关键词：

D O I：

10.1007/s101890170150

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nacre, stratified ceramic layers surrounded by organic matrix, is a tough material found inside certain seashells. We construct a coarse-grained elastic energy for such an anisotropic system and present an analytic solution for a notch crack normal to the stratified sheets. This analysis proves the reduction in stress concentration which was announced in our earlier work (P. G. de Gennes and K. Okumura, C. R. Acad. Sci. Paris 1, Ser. IV, 257 (2000)) and the related increase in toughness.

引用

页码：121 / 127

页数：7

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