Research Output per year

### Description

This data set contains approximately 140,000 shear-stabilized jammed packings, as described in [1].

These packings contain (N = 16... 4096) particles with harmonic interactions, under a confining pressure p=10^{-7}\...10^{-2}\). Ensemble sizes range from 10 (N=4096) to 5000 (N=16).

Particle interactions

The simulation code minimizes the enthalpy

H = \sum_{} \frac{k}{2} \delta_{ij}^2 + pL^2\)

where L² is the simulation box area, p the externally applied pressure, k=1 the spring constant and

\delta_{ij} = \left\{ \begin{array}{ll} R_i + R_j - |\vec{r_{ij}}| & \textrm{if } |\vec{r_{ij}}| < R_i + R_j, \\ 0 & \textrm{otherwise.} \end{array}\right.

Data files

The packings are stored in an HDF5 data file, with the following format:

Example name: N1024P3162e-3_tables.h5

Packings with N=1024 particles

Pressure p = 3.162\cdot 10^{-3}

packing_attr_cache is a data table containing properties of each packing, such as

the lattice vectors L1 and L2, describing the positions of periodic copies,

sxx, syy, sxy, the boundary stresses,

phi, the packing fraction,

N - Ncorrected, the effective number of particles,

Z, the contact number, and

path, the path in the HDF5 file this packing can be found

Packings are stored in a directory structure, e.g. /N1024/P3.1620e-03/0090

Each directory has attributes with the same data as packing_attr_cache

Each directory contains a table 'particles' which stores x,y and r.

HDF5 does not support float128 values, so the positions are stored as two float64 values x and x_err. Sum them as float128 to get the full-resolution value.

[1] Simon Dagois-Bohy, Brian P. Tighe, Johannes Simon, Silke Henkes, and Martin van Hecke. Soft-Sphere Packings at Finite Pressure but Unstable to Shear. Phys. Rev. Lett. 109, 095703. http://dx.doi.org/10.1103/PhysRevLett.109.095703

dataset licensed under Creative Commons Attribution 4.0 International

These packings contain (N = 16... 4096) particles with harmonic interactions, under a confining pressure p=10^{-7}\...10^{-2}\). Ensemble sizes range from 10 (N=4096) to 5000 (N=16).

Particle interactions

The simulation code minimizes the enthalpy

H = \sum_{} \frac{k}{2} \delta_{ij}^2 + pL^2\)

where L² is the simulation box area, p the externally applied pressure, k=1 the spring constant and

\delta_{ij} = \left\{ \begin{array}{ll} R_i + R_j - |\vec{r_{ij}}| & \textrm{if } |\vec{r_{ij}}| < R_i + R_j, \\ 0 & \textrm{otherwise.} \end{array}\right.

Data files

The packings are stored in an HDF5 data file, with the following format:

Example name: N1024P3162e-3_tables.h5

Packings with N=1024 particles

Pressure p = 3.162\cdot 10^{-3}

packing_attr_cache is a data table containing properties of each packing, such as

the lattice vectors L1 and L2, describing the positions of periodic copies,

sxx, syy, sxy, the boundary stresses,

phi, the packing fraction,

N - Ncorrected, the effective number of particles,

Z, the contact number, and

path, the path in the HDF5 file this packing can be found

Packings are stored in a directory structure, e.g. /N1024/P3.1620e-03/0090

Each directory has attributes with the same data as packing_attr_cache

Each directory contains a table 'particles' which stores x,y and r.

HDF5 does not support float128 values, so the positions are stored as two float64 values x and x_err. Sum them as float128 to get the full-resolution value.

[1] Simon Dagois-Bohy, Brian P. Tighe, Johannes Simon, Silke Henkes, and Martin van Hecke. Soft-Sphere Packings at Finite Pressure but Unstable to Shear. Phys. Rev. Lett. 109, 095703. http://dx.doi.org/10.1103/PhysRevLett.109.095703

dataset licensed under Creative Commons Attribution 4.0 International

Date made available | 9 Jul 2015 |
---|---|

Publisher | Zenodo |

## Research Output

- 1 Article

### Soft-sphere packings at finite pressure but unstable to shear

Dagois-Bohy, S., Tighe, B. P., Simon, J., Henkes, S. & van Hecke, M., 27 Aug 2012, In : Physical Review Letters. 109, 9, 5 p., 095703.Research output: Contribution to journal › Article

59
Citations
(Scopus)

## Cite this

Dagois-Bohy, S. (Creator), Henkes, S. (Creator), Simon, J. (Creator), Tighe, B. P. (Creator), van Deen, M. S. (Creator), Zeravcic, Z. (Creator), Schelter, B. O. (Data Manager) (9 Jul 2015). Shear-stabilized jammed packings. Zenodo. 10.5281/zenodo.59216