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A platform for research: civil engineering, architecture and urbanism
VISCOUS DAMPER
To securely absorb vibrational energy by varying attenuation force adaptively to vibrations differing in magnitude.SOLUTION: A viscous damper comprises: a cylinder 20 in which silicone oil is enclosed; a piston rod 30 which is inserted into the cylinder 20; a piston head 40 which is fitted to the piston rod 30 to partition the inside of the cylinder 20 into a first cylinder chamber 20A and a second cylinder chamber 20B; and a flow passage 40A which is formed penetrating the piston head 40 to link the first cylinder chamber 20A and second cylinder chamber 20B to each other. The flow passage 40A is formed of an inner peripheral surface of an annular hollow body 70 which is fitted to the entire inner peripheral surface of a through hole 42 formed penetrating the piston head 40, and made of an elastic material filled with a magnetic viscous fluid F, and a control part 100 controls electric power supply to a coil 80 to increase or decrease a volume of the hollow body 70 by change of a magnetic field applied to the magnetic viscous fluid F, thereby varying a sectional area of the flow passage 40A.SELECTED DRAWING: Figure 1
【課題】大きさが異なる振動に対応して減衰力を可変させることで振動エネルギーを確実に吸収する。【解決手段】内部にシリコンオイルが封入されたシリンダ２０と、シリンダ２０の内部に挿通されたピストンロッド３０と、ピストンロッド３０に取り付けられシリンダ２０の内部を第１シリンダ室２０Ａと第２シリンダ室２０Ｂとに区画するピストンヘッド４０と、ピストンヘッド４０に貫通形成され第１シリンダ室２０Ａと第２シリンダ室２０Ｂを連通する流路４０Ａとを備え、流路４０Ａは、ピストンヘッド４０に貫通形成された貫通孔４２の内周面の全域に取着され磁気粘性流体Ｆが充填された弾性材料からなる拡縮可能な環状の中空体７０の内周面で形成され、制御部１００がコイル８０への電通を制御することで、磁気粘性流体Ｆに印加する磁場の変化により中空体７０の体積を増減し流路４０Ａの断面積を変化させる。【選択図】図１
VISCOUS DAMPER
To securely absorb vibrational energy by varying attenuation force adaptively to vibrations differing in magnitude.SOLUTION: A viscous damper comprises: a cylinder 20 in which silicone oil is enclosed; a piston rod 30 which is inserted into the cylinder 20; a piston head 40 which is fitted to the piston rod 30 to partition the inside of the cylinder 20 into a first cylinder chamber 20A and a second cylinder chamber 20B; and a flow passage 40A which is formed penetrating the piston head 40 to link the first cylinder chamber 20A and second cylinder chamber 20B to each other. The flow passage 40A is formed of an inner peripheral surface of an annular hollow body 70 which is fitted to the entire inner peripheral surface of a through hole 42 formed penetrating the piston head 40, and made of an elastic material filled with a magnetic viscous fluid F, and a control part 100 controls electric power supply to a coil 80 to increase or decrease a volume of the hollow body 70 by change of a magnetic field applied to the magnetic viscous fluid F, thereby varying a sectional area of the flow passage 40A.SELECTED DRAWING: Figure 1
【課題】大きさが異なる振動に対応して減衰力を可変させることで振動エネルギーを確実に吸収する。【解決手段】内部にシリコンオイルが封入されたシリンダ２０と、シリンダ２０の内部に挿通されたピストンロッド３０と、ピストンロッド３０に取り付けられシリンダ２０の内部を第１シリンダ室２０Ａと第２シリンダ室２０Ｂとに区画するピストンヘッド４０と、ピストンヘッド４０に貫通形成され第１シリンダ室２０Ａと第２シリンダ室２０Ｂを連通する流路４０Ａとを備え、流路４０Ａは、ピストンヘッド４０に貫通形成された貫通孔４２の内周面の全域に取着され磁気粘性流体Ｆが充填された弾性材料からなる拡縮可能な環状の中空体７０の内周面で形成され、制御部１００がコイル８０への電通を制御することで、磁気粘性流体Ｆに印加する磁場の変化により中空体７０の体積を増減し流路４０Ａの断面積を変化させる。【選択図】図１
VISCOUS DAMPER
粘性ダンパ
FENG DEMIN (author) / TIAN QI XIANG (author)
2020-09-24
Patent
Electronic Resource
Japanese