本研究針對兩種不同液流面積來源型式之液流阻尼器進行性能測試，其一為其液流面積由活塞與套筒內徑間的間隙決定(Type A)，其二為其液流面積僅由活塞面鑽鑿之液流孔所控制(Type B)。以試驗驗證液流阻尼器之效能，分別使用動態循環載重試驗及錘撞試驗法進行測試以了解液流阻尼器之特性，並經由試驗結果比較動態循環載重試驗和錘撞試驗二者間的差異性及關聯性，並據以評估錘撞試驗在液流阻尼器性能測試上的適用性。
本研究經實際試驗及結果分析，得以下結論：
一、在阻尼力、阻尼係數、速度之關係函數中，Type A型液流阻尼器之速度項指數小於等於1；Type B型液流阻尼器之速度項指數大於1。
二、錘撞試驗與動態循環載重試驗結果相較，液流阻尼器之部分性能確能藉由錘撞試驗獲得，且由於其能輕易達到高試驗能量的特性，使其能提供滿足液流阻尼器設計速度之能量需求，對於液流阻尼器力學性質的了解更趨廣泛與完整。

Two-kinds of fluid dampers with different type of orifices were tested in this project. One type of the orifice is determined by the gape in-between the piston and the inner size of the cylinder (Type A), and the other is determined by the drilled holes on the piston (Type B). Both of cyclic dynamic test and drop hammer test are used to detect the physical properties of the fluid dampers. Furthermore, the relationship between these two kinds of test are compared and functionalized. Consequently, the feasibility of drop hammer test is recognized on the purpose of investigating the property of fluid dampers.
By analyzing the test data, two conclusions are given as follows:
1.For most of the velocity exponent of damping function for type A fluid dampers are equal to or less than one; while that for type B fluid dampers are greater than one.
2.According to the experimental results of drop hammer test and cyclic test, it is found that drop hammer test can really help us to find part of properties of fluid dampers. Because of easy to great amount of energy which we need to induce high velocity actions, drop hammer test could be able to help us to find the physical properties of fluid dampers and meet the requirements of the design projects.

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