Modularized structure for the discretization of thermal deformation

Kosei Ishimura, Ken Higuchi

Research output: Contribution to journalConference article

Abstract

For large space structures, the deformation of the structure due to thermal stress affects the attitude motion. In this paper, we propose a modularized structure which can release the thermal deformation locally. As an application, we study a space solar power system which is stabilized by gravity gradient torque. The purpose of this paper is to suppress overall deformation by the local release of thermal deformation. At first, we analyze thermal deformation of the structure and induced attitude motion under the condition where connecting rigidity between modules is as stiff as module itself. From the result, it is shown that roll and yaw motion becomes unstable due to the thermal deformation. Then, we modify the condition of the connection between modules to release thermal deformation locally. Through the simulation, it is confirmed that large deformation can be suppressed in the modified modularized structure, and thermally induced attitude motion becomes small enough for the mission.

Original languageEnglish
Pages (from-to)381-387
Number of pages7
JournalEuropean Space Agency, (Special Publication) ESA SP
Issue number581
Publication statusPublished - 2005 Dec 12
Externally publishedYes
EventEuropean Conference on Spacecraft Structures, Materials and Mechanical Testing 2005 - Noordwijk, Netherlands
Duration: 2005 May 102005 May 12

Fingerprint

modules
large space structures
study application
yaw
solar power
Hot Temperature
thermal stresses
rigidity
torque
Thermal stress
Rigidity
Solar energy
Gravitation
Torque
gravity
gravitation
gradients
simulation

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Modularized structure for the discretization of thermal deformation. / Ishimura, Kosei; Higuchi, Ken.

In: European Space Agency, (Special Publication) ESA SP, No. 581, 12.12.2005, p. 381-387.

Research output: Contribution to journalConference article

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