Steketee's paradox
Steketee's paradox
复制标题
斯泰克蒂悖论
DOI：
--
复制
发表时间：
1969
影响因子：
3
通讯作者：
J. C. Savage
中科院分区：
文献类型：
--
作者：
J. C. Savage
Steketee注意到，在边界处受恒定应力作用的介质中，位错表面的引入总是会增加介质的应变能。这被误解为在这种情况下引入位错表面不能代表断裂，因为断裂一定是一个释放能量的过程。这里表明，如果考虑整个系统，位错表面的引入确实会导致机械能的下降。证明是用内部应变来表示的，当然，这是对地震问题的适当表述。
Abstract Steketee noted that in a medium subject to invariable stresses at its boundaries, the introduction of a dislocation surface would always increase the strain energy of the medium. This has been misunderstood to imply that the introduction of a dislocation surface in that situation cannot represent rupture since rupture must be an energy-releasing process. It is shown here that the introduction of a dislocation surface can indeed cause a drop in mechanical energy if the entire system is considered. The proof is formulated in terms of internal strain which, of course, is the appropriate formulation of the earthquake problem.