@inproceedings{oai:jaxa.repo.nii.ac.jp:00020498,
 author = {和田, 浩二 and 田中, 秀和 and 陶山, 徹 and 木村, 宏 and 山本, 哲生 and Wada, Koji and Tanaka, Hidekazu and Suyama, Toru and Kimura, Hiroshi and Yamamoto, Tetsuo},
 book = {第39回月・惑星シンポジウム, Proceedings of the 39th ISAS Lunar and Planetary Symposium},
 month = {Aug},
 note = {We have carried out numerical simulations of head-on collisions of 2-D dust aggregates to investigate the compression and disruption processes of aggregates due to mutual collisions. Although similar numerical simulations have been conducted by Dominik and Tielens (1997, ApJ 480, 647-673), our simulations treat a large number of particles and various initial structures of aggregate compared to theirs. Thus, results of our simulations allow quantitative and statistical discussions on the compression and disruption processes of aggregate collision. Our results are consistent with those obtained by Dominik and Tielens: the maximum compression of the aggregates is achieved when the impact energy is approximately n(sub k) E(sub roll), and the catastrophic disruption occurs when the impact energy is approximately 10 n(sub k) E(sub break), where n(sub k) is the number of contacts in the aggregate before impact, E(sub roll) is the energy needed to roll a particle in contact by 90 deg, and E(sub break) is the energy to separate a pair of particles in contact. In addition, our results shows that the degree of maximum compression approximately depends on E(sub roll)/E(sub break). We need to investigate 3-D aggregate collisions in the next studies., 資料番号: AA0063505036},
 pages = {139--142},
 publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)},
 title = {Numerical simulation of 2-D dust aggregate collisions: Compression and disruption processes},
 year = {2006}
}