Experimental and Computational Modal Analyses for Launch Vehicle Models considering Liquid Propellant and Flange Joints
Joint Authors
Park, Jae-Sang
Sim, Chang-Hoon
Kim, Geun-Sang
Kim, Dong-Goen
Kim, In-Gul
Park, Soon-Hong
Source
International Journal of Aerospace Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-01-17
Country of Publication
Egypt
No. of Pages
12
Abstract EN
In this research, modal tests and analyses are performed for a simplified and scaled first-stage model of a space launch vehicle using liquid propellant.
This study aims to establish finite element modeling techniques for computational modal analyses by considering the liquid propellant and flange joints of launch vehicles.
The modal tests measure the natural frequencies and mode shapes in the first and second lateral bending modes.
As the liquid filling ratio increases, the measured frequencies decrease.
In addition, as the number of flange joints increases, the measured natural frequencies increase.
Computational modal analyses using the finite element method are conducted.
The liquid is modeled by the virtual mass method, and the flange joints are modeled using one-dimensional spring elements along with the node-to-node connection.
Comparison of the modal test results and predicted natural frequencies shows good or moderate agreement.
The correlation between the modal tests and analyses establishes finite element modeling techniques for modeling the liquid propellant and flange joints of space launch vehicles.
American Psychological Association (APA)
Sim, Chang-Hoon& Kim, Geun-Sang& Kim, Dong-Goen& Kim, In-Gul& Park, Soon-Hong& Park, Jae-Sang. 2018. Experimental and Computational Modal Analyses for Launch Vehicle Models considering Liquid Propellant and Flange Joints. International Journal of Aerospace Engineering،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1167283
Modern Language Association (MLA)
Sim, Chang-Hoon…[et al.]. Experimental and Computational Modal Analyses for Launch Vehicle Models considering Liquid Propellant and Flange Joints. International Journal of Aerospace Engineering No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1167283
American Medical Association (AMA)
Sim, Chang-Hoon& Kim, Geun-Sang& Kim, Dong-Goen& Kim, In-Gul& Park, Soon-Hong& Park, Jae-Sang. Experimental and Computational Modal Analyses for Launch Vehicle Models considering Liquid Propellant and Flange Joints. International Journal of Aerospace Engineering. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1167283
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1167283