Boots – shoes – and leggings
Patent
1996-02-08
1998-04-07
Trammell, James P.
Boots, shoes, and leggings
364506, 364507, 364512, 364578, 73662, 73663, 73778, 73786, G01H 1100
Patent
active
057372390
ABSTRACT:
A shaking test system for testing a structure including a shaking device for shaking the structure, measuring devices mounted on the shaking device for shaking the structure, external signal input device for inputting data indicative of external force for shaking the structure, as well as other calculating arrangements. The shaking test system permits the setting of a large time interval of a shaking test by converting natural modes of vibration expressed by a second-order differential equation, namely second-order lag system of a vibration differential equation into a first-order lag system or (O)th order lag system for short period mode.
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Horiuchi Toshihiko
Kasai Hiroaki
Konno Takao
Kurihara Masaki
Hitachi , Ltd.
Trammell James P.
Wachsman Hal P.
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