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Dynamic Mechanical Property Experiment of Viscous Material for Viscous Damping Wall

机译：粘性阻尼墙粘性材料的动态力学性能试验

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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. This study designed a Dynamic Sandwich-Type Shear (DSTS) test which matches the engineering working condition of VDW, and conducted a series of experiments with different frequencies and strain amplitudes. 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.
机译：粘性阻尼墙（VDW）是一种有效的速度依赖性阻尼器，可以通过粘性材料的剪切菌株来消散地震能量。 VDW的阻尼力方程只能从VDW动态测试结果的回归中获得，因为不能从流变仪获得电力定律材料的速度指数。本研究设计了一种动态夹层型剪切（DSTS）测试，它与VDW的工程工作条件匹配，并进行了一系列具有不同频率和应变幅度的实验。提出了简单的数据处理方法，以计算实验数据的聚合物的速度指数和储存/损耗模量。与VDW公式的方法的比较验证了径向线性回归方法是适当的对应力分量合适，并且枢轴点法准确以评估速度指数。获得的速度指数在0.8至1中变化，具有各种装载频率和应变幅度。最后，比较了DSTS测试中的储存/损耗模量与ARES测试之间的差异。由于工程工作条件引起的挤出效果，DSTS测试获得的储存和损失模量大于通过ARES测试获得的模量。

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