The mechanical behaviour of some molluscan hard tissues
The mechanical behaviour of some molluscan hard tissues
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DOI：
10.1111/j.1469-7998.1974.tb04122.x
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发表时间：
2009-08
影响因子：
2
通讯作者：
J. Currey;John D. Taylor
中科院分区：
文献类型：
--
作者：
J. Currey;John D. Taylor
本文对19种具有不同显微结构的软体动物的贝壳进行了拉伸强度、弯曲弹性模量和断裂模量的测定。在拉伸强度大多数壳与交叉叶状，叶状，均匀和交叉层状结构不超过60 MNm 2，但棱柱和nacrylate结构往往超过这个值。在断裂模量试验中，Nacalloy结构一般上级所有其他结构; Turbo的断裂模量约等于骨。结构间弹性模量值更均匀。每种动物的力学性能、微观结构和生活方式之间存在着普遍的关系。非常坚固但不广泛使用的珍珠层结构，显然比不太坚固但广泛使用的交叉层状结构进化得更早。
Pieces of shell from 19 species of molluscs exhibiting various microstructures were tested for tensile strength, modulus of elasticity in bending and modulus of rupture. In tensile strength most shells with cross-foliated, foliated, homogeneous and crossed-lamellar structures did not exceed 60 MNm 2 but prismatic and nacreous structures often exceeded this value. Nacreous structure was generally superior to all others in modulus of rupture tests; that of Turbo being about equal to bone. Values of modulus of elasticity were more uniform between structures. There is a general relation between mechanical properties, microstructure and the life style of each animal. Nacreous structure, which is very strong but not widely used, apparently evolved earlier than the less strong but widely used crossed-lamellar structure.