Dynamic Mechanical Property Experiment of Viscous Material for Viscous Damping Wall
Viscous damping wall (VDW) is an effective velocity-dependent damper, which can dissipate earthquake energy by shear strain of viscous material. The damping force equation of VDW can only be obtained from regression of VDW dynamic test results, as velocity exponent of power-law material can not be o...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2019-05-01
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| Series: | Frontiers in Materials |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fmats.2019.00112/full |
| _version_ | 1819083232754270208 |
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| author | Feifei Sun Jiaqi Yang Tanye Wu |
| author_facet | Feifei Sun Jiaqi Yang Tanye Wu |
| author_sort | Feifei Sun |
| collection | DOAJ |
| description | Viscous damping wall (VDW) is an effective velocity-dependent damper, which can dissipate earthquake energy by shear strain of viscous material. The damping force equation of VDW can only be obtained from regression of VDW dynamic test results, as velocity exponent of power-law material can not be obtained from rheometers. In this study, a Dynamic Sandwich-Type Shear test was designed matching the design working conditions of VDW. A series of experiments with different frequencies and strain amplitudes were conducted. Simple data procession methods were proposed to calculate velocity exponent and storage/loss modulus of polymer from experimental data. Comparison with methods adapted from those for VDW formula validated that radial linear regression method was proper to separate stress components and pivotal point method was accurate to evaluate velocity exponent. The velocity exponents obtained varied from 0.8 to 1, with various loading frequency and strain amplitude. Finally, the differences between the results of storage/loss modulus in DSTS test and ARES test were compared. Due to the extrusion effect caused by engineering working condition, the storage and loss modulus obtained by DSTS test was larger than the modulus obtained by ARES test. |
| first_indexed | 2024-12-21T20:29:18Z |
| format | Article |
| id | doaj.art-2e8b482fd44b41d180d6ed3ab155cefc |
| institution | Directory Open Access Journal |
| issn | 2296-8016 |
| language | English |
| last_indexed | 2024-12-21T20:29:18Z |
| publishDate | 2019-05-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Materials |
| spelling | doaj.art-2e8b482fd44b41d180d6ed3ab155cefc2022-12-21T18:51:17ZengFrontiers Media S.A.Frontiers in Materials2296-80162019-05-01610.3389/fmats.2019.00112456490Dynamic Mechanical Property Experiment of Viscous Material for Viscous Damping WallFeifei Sun0Jiaqi Yang1Tanye Wu2State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, ChinaDepartment of Structure Engineering, College of Civil Engineering, Tongji University, Shanghai, ChinaDepartment of Structure Engineering, College of Civil Engineering, Tongji University, Shanghai, ChinaViscous damping wall (VDW) is an effective velocity-dependent damper, which can dissipate earthquake energy by shear strain of viscous material. The damping force equation of VDW can only be obtained from regression of VDW dynamic test results, as velocity exponent of power-law material can not be obtained from rheometers. In this study, a Dynamic Sandwich-Type Shear test was designed matching the design working conditions of VDW. A series of experiments with different frequencies and strain amplitudes were conducted. Simple data procession methods were proposed to calculate velocity exponent and storage/loss modulus of polymer from experimental data. Comparison with methods adapted from those for VDW formula validated that radial linear regression method was proper to separate stress components and pivotal point method was accurate to evaluate velocity exponent. The velocity exponents obtained varied from 0.8 to 1, with various loading frequency and strain amplitude. Finally, the differences between the results of storage/loss modulus in DSTS test and ARES test were compared. Due to the extrusion effect caused by engineering working condition, the storage and loss modulus obtained by DSTS test was larger than the modulus obtained by ARES test.https://www.frontiersin.org/article/10.3389/fmats.2019.00112/fullpolymerdynamic mechanical propertyvelocity exponentviscous damping walldynamic sandwich-type shear (DSTS) test |
| spellingShingle | Feifei Sun Jiaqi Yang Tanye Wu Dynamic Mechanical Property Experiment of Viscous Material for Viscous Damping Wall Frontiers in Materials polymer dynamic mechanical property velocity exponent viscous damping wall dynamic sandwich-type shear (DSTS) test |
| title | Dynamic Mechanical Property Experiment of Viscous Material for Viscous Damping Wall |
| title_full | Dynamic Mechanical Property Experiment of Viscous Material for Viscous Damping Wall |
| title_fullStr | Dynamic Mechanical Property Experiment of Viscous Material for Viscous Damping Wall |
| title_full_unstemmed | Dynamic Mechanical Property Experiment of Viscous Material for Viscous Damping Wall |
| title_short | Dynamic Mechanical Property Experiment of Viscous Material for Viscous Damping Wall |
| title_sort | dynamic mechanical property experiment of viscous material for viscous damping wall |
| topic | polymer dynamic mechanical property velocity exponent viscous damping wall dynamic sandwich-type shear (DSTS) test |
| url | https://www.frontiersin.org/article/10.3389/fmats.2019.00112/full |
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