@article{horie_yano_1999, title={Discrete element modeling of shock compression of hexagonal boron nitride powder with and without copper addition}, volume={85}, ISSN={["0924-0136"]}, DOI={10.1016/S0924-0136(98)00272-6}, abstractNote={A multi-physics, discrete element computer code called DM2 was used to model shock compression of hexagonal boron nitride (hBN) powder at the particle level. Included in this analysis are an anisotropic property of powder grains and heat conduction between hBN and copper particles. Results confirm the earlier observations that the effects of copper are to increase shock pressure and to act as a heat sink to cool BN grains. But, the simulation also reveals that the shock processing at the particle level is far more complex than those suggested in the literature and that the interpretation of process parameters based on macroscopic conditions requires caution.}, number={1-3}, journal={JOURNAL OF MATERIALS PROCESSING TECHNOLOGY}, author={Horie, Y and Yano, K}, year={1999}, month={Jan}, pages={109–114} }
 @article{yano_horie_1999, title={Discrete-element modeling of shock compression of polycrystalline copper}, volume={59}, ISSN={["2469-9969"]}, DOI={10.1103/physrevb.59.13672}, abstractNote={Shock compression of polycrystalline copper was numerically investigated by use of a discrete-element model to highlight underlying heterogeneous and nonequilibrium processes at the grain level. The average diameter of model grains was 12 \ensuremath{\mu}m. Results show highly transient vortical flow fields and strong particle velocity dispersion that are consistent with the experimental results of Mescheryakov and his associates. Characteristic times for these phenomena were on the order of acoustic propagation times across the grains. The number of vortices increased with shock strength, but their size decreased almost inversely. Ejection of copper particles from the back free surface of the specimen was also observed. The cause of ejection is grain boundary cracking.}, number={21}, journal={PHYSICAL REVIEW B}, author={Yano, K and Horie, Y}, year={1999}, month={Jun}, pages={13672–13680} }
 @article{yano_horie_1998, title={A numerical study of shock-induced particle velocity dispersion in solid mixtures}, volume={84}, ISSN={["0021-8979"]}, DOI={10.1063/1.368197}, abstractNote={Shock-induced particle velocity dispersion in solid mixtures was numerically investigated using two approaches: discrete element simulation and continuum mixture calculation. Results show (i) a trend-wise agreement between the two models, (ii) nonequilibrium distributions of particle velocity dispersion, and (iii) particle velocity dispersions of 20–100 m/s for a 10 GPa shock wave in Ni/Al mixtures and 5–70 m/s for a 5 GPa shock wave in Ti/Teflon mixtures. Particle velocity dispersions of this magnitude are thought to be the driving mechanism for initiation of chemical reactions in reactive solid mixtures.}, number={3}, journal={JOURNAL OF APPLIED PHYSICS}, author={Yano, K and Horie, Y}, year={1998}, month={Aug}, pages={1292–1298} }
 @article{schwarz_horie_shearer_1998, title={Discrete element investigation of stress fluctuation in granular flow at high strain rates}, volume={57}, ISSN={["2470-0053"]}, DOI={10.1103/physreve.57.2053}, number={2}, journal={PHYSICAL REVIEW E}, author={Schwarz, OJ and Horie, Y and Shearer, M}, year={1998}, month={Feb}, pages={2053–2061} }
 @article{tamura_horie_1998, title={Discrete meso-dynamic simulation of thermal explosion in shear bands}, volume={84}, ISSN={["0021-8979"]}, DOI={10.1063/1.368532}, abstractNote={A two-dimensional discrete element code (DM2), was used to model a complex interplay of deformation and chemical reaction in a region of localized shear at the particle level. Two exothermic mixtures of Nb–Si and Ni–Al particles having dimensions of 5 μm×25 μm were considered. Computational experiments showed that the mixtures exhibit a classical phenomenon of thermal explosion under high rates of shearing. The threshold shear rates were found to be approximately 1.2×108/s and 8.0×107/s for the Nb–Si and Ni–Al mixtures, respectively. The ignition conditions were sensitive to the thermal boundary conditions and the computationally observed values are considered to be the upper limits. The thermal explosion results from the interaction of mechanical mass mixing and heating that were primarily caused by thinning (plastic deformation) and fragmentation. The modeling showed an interesting result: that there is a ratio of fracture strengths that maximizes the mass mixing.}, number={7}, journal={JOURNAL OF APPLIED PHYSICS}, author={Tamura, S and Horie, Y}, year={1998}, month={Oct}, pages={3574–3580} }
 @inproceedings{schwarz_horie_krstulovic-opara_1998, title={The behavior of SIMCON under ballistic loading: An analytical study}, number={1998}, booktitle={Engineering mechanics: Proceedings of the 12th ASCE Engineering Mechanics Conference: A Force for the 21st Century, La Jolla, CA, May 17-20, 1998}, author={Schwarz, O. J. and Horie, Y. and Krstulovic-Opara, N.}, year={1998} }
 @inproceedings{horie_yano_1997, title={A new computer code DM2: Discrete meso-dynamic modeling of shock processes in solids}, number={1997}, booktitle={New models and numerical dodes for shock wave processes in condensed media: Proceedings of the International Workshop held at Oxford, 15-19 September 1997}, author={Horie, Y. and Yano, K.}, year={1997} }
 @inproceedings{horie_yano_1997, title={Discrete element modeling of shock compression of hBN powder with and without copper addition}, number={1997}, booktitle={Proceedings of the International Workshop on Industrial Applications of Explosion, Shock-Wave and High Pressure Phenomena. Kumamoto, October 1997}, author={Horie, Y. and Yano, K.}, year={1997} }
 @inproceedings{tamura_horie_1997, title={Discrete meso-element simulation of chemical reactions in shear bands}, volume={429}, booktitle={Proceedings of the Conference of the American Physical Society Topical Conference on Shock Compression of Condensed Matter held at Amherst, Massachusetts, July 27-August 1, 1997}, author={Tamura, S. and Horie, Y.}, editor={S. C. Schmidt, D. P. Dandekar and Forbes, J. W.Editors}, year={1997}, pages={377–380} }
 @book{davison_horie_shainpoor_1997, title={High-pressure shock compression of solids IV: Response of highly porous solids to shock loading}, ISBN={038794995X}, publisher={New York: Springer-Verlag}, author={Davison, L. W. and Horie, Y. and Shainpoor, M.}, year={1997} }
 @inproceedings{yang_gould_horie_iyer_1997, title={New evidence concerning the shock-induced chemical reaction mechanism in a Ni/Al mixture}, volume={429}, booktitle={Shock compression of condensed matter--1997: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter held at Amherst, Massachusetts, July 27-August 1, 1997}, author={Yang, Y. and Gould, R. D. and Horie, Y. and Iyer, K. R.}, year={1997}, pages={639–642} }
 @inproceedings{yano_horie_1997, title={Particle velocity dispersion in shock compression of solid mixtures}, volume={429}, booktitle={Proceedings of the Conference of the American Physical Society Topical Conference on Shock Compression of Condensed Matter held at Amherst, Massachusetts, July 27-August 1, 1997}, author={Yano, K. and Horie, Y.}, editor={S. C. Schmidt, D. P. Dandekar and Forbes, J. W.Editors}, year={1997}, pages={259–262} }
 @article{yang_gould_horie_iyer_1997, title={Shock-induced chemical reactions in a Ni/Al powder mixture}, volume={70}, ISSN={["1077-3118"]}, DOI={10.1063/1.119172}, abstractNote={A new 50 mm powder gun was used to reproduce and to extend the real-time observations of ultra-fast exothermic reactions in a Ni/Al powder mixture at the shock front. Shock profiles measured by a manganin gauge show that (1) the threshold pressure for reaction is about 14 GPa; (2) the initiation criteria based either on shock energy or melting are in contradiction with experimental evidence.}, number={25}, journal={APPLIED PHYSICS LETTERS}, author={Yang, Y and Gould, RD and Horie, Y and Iyer, KR}, year={1997}, month={Jun}, pages={3365–3367} }
 @inproceedings{horie_yano_1997, title={Shock-wave initiation of chemical reactions in inorganic powders}, DOI={10.4131/jshpreview.7.864}, abstractNote={A new estimate of the threshold condition is proposed for shock-induced chemical reactions in inorganic powder mixtures. The condition is based on a concept of energy balance whereby a sudden increase in interface areas is equated to fluctuating local kinetic energy. Estimates based on the analysis for Ni/Al and Ti/Si compare well with recent real time measurements.}, number={1997 Aug.}, booktitle={Proceedings of AIRAPT-16 & HPCJ-38, Kyoto, August, 1997}, author={Horie, Y. and Yano, K.}, year={1997} }
 @inproceedings{schwarz_horie_1997, title={Stress fluctuation and order generation in shearing of granular materials}, volume={429}, booktitle={Proceedings of the Conference of the American Physical Society Topical Conference on Shock Compression of Condensed Matter held at Amherst, Massachusetts, July 27-August 1, 1997}, author={Schwarz, O. J. and Horie, Y.}, editor={S. C. Schmidt, D. P. Dandekar and Forbes, J. W.Editors}, year={1997}, pages={263–266} }