抄録
A stress distribution of pressure media in a high pressure apparatus, the flat belt type, was estimated by the rigid plastic method. Since it was so difficult to estimate the stress distribution of that primarily, because of the complicated inner structure of the pressure media, we tried to estimate stress distribution in a diamond anvil cell that had a simple structure. Various kinds of pressure media, copper, pyrophyllite and salt, were used to study the effect of friction factors. The estimated stress distribution of copper in a diamond anvil cell was quite similar to the observed one, when the friction factor was supposed to be a constant at any inner pressure. On the other hand, the estimated stress distribution of pyrophyllite became equal to the observed one, when the friction factor was supposed to be proportional to the 3rd power of an inner pressure. Finally, the estimated stress distribution of the pressure media in the high pressure apparatus could be equal to the observed one using the supposition of the friction factor being proportional to the 3rd power of an inner pressure.
