321 citations · 1.3k across the 30 of their papers we have counts for
10 papers · 1 filter
Strain correlation functions in isotropic elastic bodies: Large wavelength limit for two-dimensional systems
J. P. Wittmer, A. N. Semenov, J. Baschnagel
Strain correlation functions in two-dimensional isotropic elastic bodies are shown both theoretically (using the general structure of isotropic tensor fields) and numerically (usin…
Correlations of tensor field components in isotropic systems with an application to stress correlations in elastic bodies
J. P. Wittmer, A. N. Semenov, J. Baschnagel
Correlation functions of components of second-order tensor fields in isotropic systems can be reduced to an isotropic forth-order tensor field characterized by a few invariant corr…
Spatial correlation functions for non-ergodic stochastic processes of macroscopic system
J. P. Wittmer, A. N. Semenov, J. Baschnagel
Focusing on non-ergodic macroscopic systems we reconsider the variances of time averages time-series. The total variance (direct average over all time-series) is known to be the su…
Shear-stress fluctuations in self-assembled transient elastic networks
J. P. Wittmer, I. Kriuchevskyi, A. Cavallo +2
Focusing on shear-stress fluctuations we investigate numerically a simple generic model for self-assembled transient networks formed by repulsive beads reversibly bridged by ideal…
Simple-average expressions for shear-stress relaxation modulus
J. P. Wittmer, H. Xu, J. Baschnagel
Focusing on isotropic elastic networks we propose a novel simple-average expression for the computational determination of the shear-stress relaxation modulus $…
Compressibility and pressure correlations in isotropic solids and fluids
J. P. Wittmer, H. Xu, P. Polinsak +4
Presenting simple coarse-grained models of isotropic solids and fluids in , and dimensions we investigate the correlations of the instantaneous pressure and its ideal…