TY - GEN
T1 - Importance of enclosed gas for modal analysis of space inflatable structure
AU - Liu, Fei
AU - He, Wei Liang
PY - 2014
Y1 - 2014
N2 - The stress distribution and modal characteristics of a space inflatable torus is investigated using the nonlinear finite element method. This paper focused on the effect of enclosed air on the modal analysis of the torus, including the effect of follower pressure load and the effect of the interaction between the enclosed air and the torus structure. Research shows that follower pressure stiffness significantly reduces the natural frequencies and changes mode shapes order. The fluid-structure interaction obviously reduces the natural frequencies, and the in-plane translation mode is observed. Follower pressure stiffness has no effect on the in-plane translation mode. Fluid-structure interaction decreases the natural frequencies of the modal considering the follower load effect, but it does not change mode shapes order. The effect of enclosed gas seriously reduces the natural frequencies, changes mode shapes order, and produces the in-plane translation mode.
AB - The stress distribution and modal characteristics of a space inflatable torus is investigated using the nonlinear finite element method. This paper focused on the effect of enclosed air on the modal analysis of the torus, including the effect of follower pressure load and the effect of the interaction between the enclosed air and the torus structure. Research shows that follower pressure stiffness significantly reduces the natural frequencies and changes mode shapes order. The fluid-structure interaction obviously reduces the natural frequencies, and the in-plane translation mode is observed. Follower pressure stiffness has no effect on the in-plane translation mode. Fluid-structure interaction decreases the natural frequencies of the modal considering the follower load effect, but it does not change mode shapes order. The effect of enclosed gas seriously reduces the natural frequencies, changes mode shapes order, and produces the in-plane translation mode.
KW - FEM
KW - Fluid-structure interaction
KW - Follower pressure load
KW - Modal analysis
KW - Space inflatable structure
UR - https://www.scopus.com/pages/publications/84906990770
U2 - 10.4028/www.scientific.net/AMR.1016.244
DO - 10.4028/www.scientific.net/AMR.1016.244
M3 - 会议稿件
AN - SCOPUS:84906990770
SN - 9783038352235
T3 - Advanced Materials Research
SP - 244
EP - 248
BT - Mechanical and Aerospace Engineering V
PB - Trans Tech Publications Ltd
T2 - 5th International Conference on Mechanical and Aerospace Engineering, ICMAE 2014
Y2 - 18 July 2014 through 19 July 2014
ER -