46 citations · 51 across the 7 of their papers we have counts for
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The Armstrong-Frederick cyclic hardening plasticity model with Cosserat effects
Krzysztof Chelminski, Patrizio Neff, Sebastian Owczarek
We propose an extension of the cyclic hardening plasticity model formulated by Armstrong and Frederick which includes micropolar effects. Our micropolar extension establishes coerc…
On the characterization of drilling rotation in the 6-parameter resultant shell theory
Mircea Birsan, Patrizio Neff
We analyze geometrically non-linear isotropic elastic shells and prove the existence of minimizers. In general, the model takes into account the effect of drilling rotations in she…
Sum of squared logarithms - An inequality relating positive definite matrices and their matrix logarithm
Mircea Birsan, Patrizio Neff, Johannes Lankeit
Let y1, y2, y3, a1, a2, a3 > 0 be such that y1 y2 y3 = a1 a2 a3 and y1 + y2 + y3 >= a1 + a2 + a3, y1 y2 + y2 y3 + y1 y3 >= a1 a2 + a2 a3 + a1 a3. Then the following inequality hold…