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Novel and various magnetic states in spin-dimer systems with triangular lattices
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Deformation behavior of CFRP bistable open-section cylindrical boom for lunar deployable structure
No full textWith the recent expansion of lunar exploitation, there is a need for structural components to deploy and support solar cells or antennas on the Moon. Carbon fiber reinforced plastic (CFRP) bistable open-section cylindrical booms have been investigated as a deployable structure in a microgravity environment. In this paper, the deformation of the CFRP bistable boom under a point load was investigated in order to apply the boom to a structural member that holds loads in the lunar gravity environment. First, theoretical solutions for tension, compression, bending, torsion, and natural vibration of an open-section cylinder were derived. A finite element analysis model was then constructed. To confirm the validity of these models, tests were conducted on a 2 m CFRP open-section cylindrical boom and the results were compared. The characteristics of the open-section cylindrical boom shape, which has the centroid and shear center away from the center of the cylinder, easily cause bending-torsional coupling deformation, and the behavior differs greatly depending on the eccentricity and loading direction.journal articl
Lecture Event：“Progress Report on the 20th Petition for the Retrial of The Teigin Jiken” The Teigin Jiken -The Mystery of the Poison Used
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The Nexus of Militarization and Tourism in the “American Lake” -Focusing on Militourism in Hawai‘i-
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Analytical Models of the Impact of Control and Support in Japanese Keiretsu Companies
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