Ultrasonic Measurement of Elastic Anisotropy Change due to Plastic Compression.

Anisotropy in Elastic Properties of Porous 316L Stainless Steel Due to the Shape and Regular Cell Distribution

In this study, two-dimensional finite element modeling was used to study the simultaneous effect of the cell shape and regular cell distribution on the anisotropy of the elastic properties of 316L stainless steel foam. In this way, the uniaxial compressive stress-strain curve was predicted using a geometric model and fully solid 316L stainless steel. The results showed that the elastic tangent ...

Universal elastic anisotropy index.

Practically all elastic single crystals are anisotropic, which calls for an appropriate universal measure to quantify the extent of anisotropy. A review of the existing anisotropy measures in the literature leads to a conclusion that they lack universality in the sense that they are non-unique and ignore contributions from the bulk part of the elastic stiffness (or compliance) tensor. Proceedin...

Concerning the state - change due to the measurement process

The statistical transformation theory contains procedures for the computation of measurement probabilities, but requires for its completion a statement about the state-change due to the measurement process. An ansatz suggested for this by J. von Neumann is discussed and rejected. An ansatz is proposed for the state-change which is essentially identical to the " reduction of the wave function. "...

Strain Elastic-plastic Theories

In a unified approach, the virtual work equations in rate form and in incremental forms are derived rigorously for elastic-plastic continuum subjected to large strains. T h e finite element p r d u r e s for the analyses of clastic-plastic solid b a d on Lee’s theory and the Green-Naghdi theory arc presented. Also, i t i s shown that transformations can be performed among the Eulerian, the Tota...

Dynamic Response in an Elastic-plastic Projectile Due to Normal Impact