| Titre : | Dynamics simulations of a graphite block under longitudinal impact (2012) |
| Auteurs : | Gyeongho Kim, Auteur ; Dong-Ok Kim, Auteur ; Woo-Seok Choi, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Transactions of the ASME . Journal of engineering for gas turbines and power (Vol. 133 N° 5, Mai 2011) |
| Article en page(s) : | 07 p. |
| Note générale : | Génie Mécanique |
| Langues : | Anglais |
| Index. décimale : | 620.1 (Essais des matériaux. Défauts des matériaux. Protection des matériaux) |
| Tags : | Earthquake engineering Fission reactor materials Gas cooled reactors Graphite Impact (mechanical) |
| Résumé : | Graphite blocks are important core components of the high temperature gas-cooled reactor. As these blocks are simply stacked in array, collisions among neighboring components may occur during earthquakes or accidents. Thus, it is important to develop a reliable seismic model of the stacked graphite blocks and have them designed to maintain their structural integrity during the anticipated occurrences. Various aspects involved in modeling and calculating impact-contact dynamics can affect the resulting behavior of the graphite block. These include mesh size, time step, contact behavior, mechanical constraint formulation of impact-contact analysis, etc. This work is dedicated to perform comparative studies and the effects of these parameters will be identified. The insights obtained through these studies will help build a realistic impact-contact model of the graphite block from which a lumped or reduced dynamics model will be developed for the seismic analysis of the reactor including these graphite components. |
| DEWEY : | 620.1 |
| ISSN : | 0742-4795 |
| En ligne : | http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JETPEZ000133000005052901000001&idtype=cvips&gifs=Yes&ref=no |
