@article{oai:jaxa.repo.nii.ac.jp:00022696,
 author = {西元, 美希 and 根岸, 秀世 and 吉村, 忍 and 笠原, 直人 and 秋葉, 博 and 砂川, 英生 and 堀, 秀輔 and 根来, 延樹 and Nishimoto, Miki and Negishi, Hideyo and Yoshimura, Shinobu and Kasahara, Naoto and Akiba, Hiroshi and Sunakawa, Hideo and Hori, Shusuke and Negoro, Nobuki},
 issue = {826},
 journal = {日本機械学会論文集, Transactions of the JSME (in Japanese)},
 month = {Jun},
 note = {In Japan, new developments of liquid rocket engines are now underway for Japan’s next flagship launch system. In the development, front-loading design process is applied to reduce development costs and to increase reliability. Therefore it is indispensable to precisely evaluate life time of a combustion chamber, which is exposed to the most severe heat and loads among engine components, in an early design phase. In order to improve accuracy in the life prediction, we focus on the interaction between thermo-fluid behaviors and structural responses, and have been developing the multi-physics coupled simulation. By applying this simulation and the linear damage rule, we have clarified the mechanisms and the dominant factors of cracks occurred in the throat, which were experienced under development of the upper stage engine. It has been revealed that the damage is caused by creep and low cycle fatigue and depends on structural temperature histories. Structural temperature overshoots in the start-up process are affected by the transient flows of both combustion gas and coolant. Due to overshooting temperature, creep and low cycle fatigue damage are accumulated., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: PA1610085000},
 title = {極限マルチフィジクス環境における液体ロケットエンジン燃焼室の破損メカニズムの解明と寿命評価},
 volume = {81},
 year = {2015}
}