Jonathan Erhard Kollmer

Works (4)

Updated: April 5th, 2024 10:00

2021 journal article

Spongelike Rigid Structures in Frictional Granular Packings

Physical Review Letters, 126(7).

By: K. Liu *, J. Kollmer n, K. Daniels n , J. Schwarz * & S. Henkes *

TL;DR: It is shown how rigidity emerges in experiments on sheared two-dimensional frictional granular materials by using generalizations of two methods for identifying rigid structures, the force-based dynamical matrix and the topology-based rigidity percolation. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: February 23, 2021

2020 journal article

Migrating Shear Bands in Shaken Granular Matter

PHYSICAL REVIEW LETTERS, 125(4).

By: J. Kollmer n, T. Shreve *, J. Claussen, S. Gerth, M. Salamon, N. Uhlmann, M. Schroeter, T. Poeschel

TL;DR: Using x-ray radiography, it is demonstrated that the effect of dilatancy, the reduction in volume fraction occurring in sheared dense granular media, is caused by Dilatancy. (via Semantic Scholar)
Source: Web Of Science
Added: August 3, 2020

2019 journal article

Rigidity percolation control of the brittle-ductile transition in disordered networks

Physical Review Materials, 3(7).

By: E. Berthier n, J. Kollmer n, S. Henkes *, K. Liu *, J. Schwarz * & K. Daniels n 

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Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 5, 2019

2017 journal article

Photoelastic force measurements in granular materials

REVIEW OF SCIENTIFIC INSTRUMENTS, 88(5).

By: K. Daniels n , J. Kollmer n & J. Puckett *

TL;DR: This review paper summarizes the past work using the photoelastic technique, describes the optics underlying the technique, and illustrates how it can be used to quantitatively determine the vector contact forces between particles in a 2D granular system. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

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