粘滞阻尼器是一种速度相关型的耗能减振装置，其减震性能由结构内部阻尼介质物理性质决定。聚硼硅氧烷（PBDMS）是一种硅胶系高分子材料，由于具有作为粘滞阻尼器的阻尼介质的潜力而受到广泛关注。但是由于机械性能较差，限制了其广泛应用。本课题组通过添加白炭黑与二甲基硅油来改性PBDMS，获得粘滞阻尼器要求的非线性阻尼特性，提高其机械性能及其稳定性。通过对样品的流变性能、热力学性能以及阻尼器的动力学性能进行测试分析，结果表明，利用白炭黑改性PBDMS，不仅不影响材料的粘流温度，还带来了材料优异的机械性能。而该阻尼材料在工作一段时间后，其力学性能仍不发生改变，表现出较好的可逆性。将增塑型PBDMS作为粘滞阻尼器的阻尼介质使用，可以得到阻尼力与速度成非线性关系的粘滞阻尼特性，这种非线性粘滞阻尼器在同等条件下阻尼性能更优异、安全性更高。
Abstract
Viscous damper is a kind of velocity dependent energy dissipation damping device whose shock absorption performance is determined by the physical properties of the damping medium inside the structure.Polyborosiloxane (PBDMS) is a sort of silicone polymer material that has received widespread attention due to its potential as a damping medium for viscous dampers, but its poor mechanical properties have limited its widespread use.The research group modified PBDMS by doping silica and dimethicone to form the nonlinear damping characteristics required by viscous dampers, and to improve its mechanical properties and stability.The rheological properties, thermodynamic properties, and dynamic properties of the damper were tested and analyzed.The results show that PBDMS modified by silica can not only have no effect on the viscous flow temperature of the material, but also makes the material have excellent mechanical properties.However, after working for a period of time, the mechanical properties of the damping material have not changed, showing good reversibility.Using plasticized PBDMS as the damping medium of the viscous damper,the viscous damping characteristic of nonlinear relationship between damping force and velocity can be obtained.Under the same conditions,the damping performance and safety of this kind of nonlinear viscous damper are better.
关键词
:聚硼硅氧烷 /
非线性阻尼材料 /
非线性粘滞阻尼器 /
耗能减振
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Key words
Polyborosiloxane /
nonlinear damping materials /
nonlinear viscous damper /
energy dissipation damping device
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参考文献
[1] 屈哲.孔隙式粘滞阻尼器力学性能研究及其工程应用[D].武汉,华中科技大学,2016.
QU Zhe.Studies on mechanics performance and engineering applications of orifice type viscous fluid damper[D].Wuhan,Huazhong University of Science and Technology,2016.
[2] 段玉凤.液体粘滞阻尼器的研究和试验[C]，中国公路学会桥梁和结构工程分会杭州湾大桥工程指挥部.中国公路学会桥梁和结构工程分会2005年全国桥梁学术会议论文集.宁波：人民交通出版社出版,2005：1084-1090.
DUAN Yu-feng.Research and test of liquid viscous damper[C].Hangzhou Bay Bridge Engineering Headquarters, Bridge and Structural Engineering Branch of China Highway Society.Proceedings of 2005 National Bridge Academic Conference of Bridge and Structural Engineering Branch of China Highway Society.Ningbo:Published by People's Communications Publishing House,2005：1084-1090.
[3] 汪大洋, 周云, 王烨华,等. 粘滞阻尼减震结构的研究与应用进展[J]. 工程抗震与加固改造, 2006,28(04):22-31.
Wang Da-yang , Zhou Yun , Wang Ye-hua ,et al. State-of-the-Art of research and application on structures with viscous damper [J].Earthquake Resistant Engineering and Retrofitting, 2006, 28(04):22-31..
[4] ZHOU Hong , YAN Li-xun , JIANG Wan-quan ,et al. Shear thickening fluid-based energy-free damper: design and dynamic characteristics[J]. Journal of Intelligent Material Systems & Structures, 2016, 27(2):208-220.
[5] 陈永祁, 马良喆.粘滞阻尼器在实际工程应用中相关问题讨论[J]. 工程抗震与加固改造, 2014, 36(3):7-13.
CHEN Yong-qi ,MA Liang-zhe . Some discussion related to viscous dampers application in the actual project[J].Earthquake Resistant Engineering and Retrofitting, 2014, 36(3):7-13.
[6] Castellano M G , Colato G P , Infanti S.Use of viscous dampers and shock transmission units in the seismic protection of buildings[C].Proceedings of the 13th World Conference on Earthquake Engineering.Vancouver, B.C., Canada, 2004, (2172) 1-15.
[7] LIANG Jie. Design and testing of shock transmission device for bridge protection[J]. Applied Mechanics & Materials, 2013, 405-408:1517-1520.
[8] Soraru G D , Babonneau F , Gervais C , et al. Hybrid RSiO1.5/B2O3 gels from modified silicon alkoxides and boric acid[J]. Journal of Sol-Gel Science and Technology, 2000, 18(1):11-19.
[9] 宋健, 周文君, 吕群. 聚硼硅氧烷阻燃PC／ABS合金的制备与其阻燃性能[J]. 中国塑料, 2010, 24(8):28-31.
SONG Jian , ZHOU Wen-jun , LV Qun . Preparation and flame retardancy of PC/ABS alloy flame retarded by polyborosiloxane[J]. China Plastics, 2010,24(8):28-31.
[10] TANG Miao , WANG Wen-tao , XU Dong-hua ,et al. Synthesis of structure-controlled polyborosiloxanes and investigation on their viscoelastic response to molecular mass of polydimethylsiloxane triggered by both chemical and physical interactions[J]. Industrial & Engineering Chemistry Research, 2016, 55(49):12582-12589.
[11] 李春连,陈汉清,吕莉. 聚硼硅氧烷的制备及阻燃性能[J]. 有机硅材料, 2013, 27(3):162-164.
LI Chun-lian , CHEN Han-qing , LV Li . Synthesis of polyborosiloxane and determination of its flame retardant properties[J].Silicone Material, 2013, 27(3):162-164.
[12] Rubinsztajn S . New facile process for synthesis of borosiloxane resins[J]. Journal of Inorganic and Organometallic Polymers and Materials, 2014, 24(6):1092-1095.
[13] Zhang X Z , Li W H , Gong X L . The rheology of shear thickening fluid (STF) and the dynamic performance of an STF-filled damper[J]. Smart Materials and Structures, 2008, 17(3):035027.
[14] JT/T926-2014.桥梁用黏滞流体阻尼器[S].人民交通出版社股份有限公司:北京.2014.
JT/T926-2014.Fluid viscous damper for bridges.[S].People's Communications Publishing House Co., Ltd.: Beijing.2014.
[15] AASHTO LRFD bridge construction specifications［S］．4th ed．AASHTO:Washington D.C.2017．
[16] 姜琳琳. 粘滞阻尼材料及其阻尼器的性能研究[D]. 青岛，青岛理工大学, 2013.
JIANG Lin-lin.Research on the properties of viscous damping materials and its damper[D].Qingdao,Qingdao Technological University, 2013.
[17] LU Zheng , WANG Zi-xin , ZHOU Ying ,et al.Nonlinear dissipative devices in structural vibration control: A review[J]. Journal of Sound and Vibration, 2018, 423:18-49.
[18] Wen-Hsiung Lin , Chopra,A.K. Earthquake response of elastic SDF systems with nonlinear fluid viscous dampers[J]. Earthquake Engineering & Structural Dynamics, 2010, 31(9):1623-1642.
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