- 學位論文
低降伏鋼剪力消能裝置之塑性模式探討
The Plastic Model of Shear Energy Dissipation Device Using Low-yield-stress Steel
摘要
低降伏強度鋼板為近年來所新開發的材料，其具有低降伏強度、高延展性、低降伏比的特性。國內外利用低降伏強度鋼板作為鋼板剪力消能裝置已有相當的研究，模擬消能能力所使用的消能模式也是很多，所以要找一個能描述此構材真正反應的消能模式是有其必要性的，本文研究以Nakashima【1,2】文中採用結合等向及走動硬化Ramberg-Osgood模式，並找出在參數決定上可以方便使用的方法。 本研究的主要目的是：（1）將以模式模擬低降伏鋼剪力消能裝置在加載試驗中的消能行為，試找出模式的五個最佳化的模式參數，分別是初始彈性勁度值、降伏點、參數 、參數 、參數β。（2）將就不同性質的振幅加載歷程，來模擬其消能行為能力並試討論比較之。
關鍵字
低降伏強度鋼並列摘要
The low yield strength steel plate is materials developed newly in recent years, and it possesses large ductility, low yield strength, and small yield ratio. The researches of using shear energy dissipation device using low-yield-stress steel are very much in domestic and foreign. There are many models which can successful simulate disappears energy. It is necessary to find real response of the model can descript this material rightly. The studies is using isotropic-kinematic harden model with Ramberg-Osgood model in Nakashima【1,2】,and finds the model which has a good way of choseing parameters easily . The main purposes of this research are: (1) uses the model to simulate the disappear energy of shear energy dissipation device using low-yield-stress steel in the load tests, and finds five suitable parameters of model. They are the initial yield stress, the initial elastic stiffness, parameterα, parameterη, parameterβ. (2) simulates the capacity of disappear energy in different amplitude of load tests and discusses it.
並列關鍵字
I-K RO model參考文獻
延伸閱讀
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