Aspects of modulus measurement
Aspects of modulus measurement
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模量测量的方面
DOI：
10.1007/978-94-011-1264-2_8
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
R. Morrell
中科院分区：
文献类型：
--
作者：
G. Dean;M. Loveday;P. M. Cooper;B. E. Read;B. Roebuck;R. Morrell
材料模量的值可以由施加在材料上的应力场的任何分量与产生的应变场的任何分量之比来定义。对于各向同性弹性材料，两个模量足以表征其线弹性特性。因此，知道任意两个模量就意味着可以计算出任何应力场下应变场的所有分量。对于各向异性材料，如含有某些晶体区域排列的结晶固体或定向纤维复合材料，其弹性行为不是各向同性的，需要两个以上的模量来关联任意应力和应变分量（Read和Dean， 1978，第1章）。
A value for a modulus of a material may be defined by the ratio of any component of a stress field applied to the material to any component of the resulting strain field. For an isotropic elastic material, two modulus values are sufficient to characterize its linear elastic behaviour. A knowledge of any two moduli therefore means that all components of the strain field may be calculated for any applied stress field. For anisotropic materials, such as crystalline solids containing some alignment of the crystal regions or oriented fibre composites, the elastic behaviour is not isotropic and more than two moduli are needed to relate arbitrary stress and strain components (Read and Dean, 1978, Chapter 1).