具有二重对称轴的弹性各向异性晶体的范性问题

本文首先说明晶体的弹性性质对其范性性质的重要作用,然后利用富氏变换方法推导出具有二重对称轴的晶体内由于集中作用力和位错所引起的应力分布。最后,利用本文中的公式讨论了Zn晶体的孪晶问题,指出孪晶的晶体可以使弹性能降低约35％左右。这就更进一步的证明了A.B.斯捷潘诺夫认为晶体的孪晶是由于弹性稳定性丧失的理论。

PLASTICAL PROBLEMS OF A CRYSTAL THAT HAS A TWO-HOLD SYMMETRICAL AXIS

In this paper, the Fourier transtorm method is used to solve the plane problems of an elastically anisotropical crystal thai has a two-hold symmetriceal axis. The stress distribution formulas of a crystal produced by the aetion of a point force are derived. Using these formulas the stress field of a, dislocation in the crystal is obtained. As an example, it is ealculated that the twined Zn crystal can lower its elastical energy about 35 per cent.