| Calculation of coordinate and equivalent stress distribution in volume and on the surface of an anvil is realized at first time at three general states of high pressure apparatus (HPA) for sintering nanomaterials: "assembly", "loading" and "unloading" by finite element analysis. Zones of extreme stresses demanding modernization of the geometrical profile of an anvil at their places are revealed. It allows decrease unevenness of stress distribution and thereby to increase a service time of the apparatus. Maximal disruptive stresses are concentrated at the edge of recess bottom. It is shown that maximal stresses are arisen in an anvil under pressure relief in the apparatus. Real picture of anvil destruction during a working process of the HPA and the character of calculated stress distribution are in accordance with each other. |
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