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Research on the Dynamic Performance of Low-Yield-Strength Shear Panel Damper for Bridge Application

Journal of Shanghai Jiaotong university(Science) 2013年第1期18卷 118-128页

作者：张超锋张志胜青木徹彦张敏 School of Mechanical Engineering Jiangnan University School of Mechanical Engineering Southeast University School of Civil Engineering Aichi Institute of Technology Changzhou Road Structure Damping Equipments Co. Ltd.

This study seeks to develop a scientific understanding of the effects of dynamic loading history on the low-yield-strength shear panel damper （LYSPD） mechanical properties and fatigue performance. The LYSPD model is supposed as perfect elastic-plastic without strength deterioration. By adjusting the damper strength with the above supposition in the DYMO software, the serial earthquake response waves of the LYSPD under different soil conditions are obtained firstly. Subsequently, several waves, the most prone to damage at each soil condition. are selected as dynamic loading waves to verify the LYSPD dynamic performances experimentally. The test re- sults suggest that the dynamic loading histories have no influence on the LYSPD strength or the supposed model while they affect the fatigue performance. The applicability and accuracy of three fatigue evaluation metbods, cumulative plastic shear strain, cumulative energy absorption and Miner rule, are also compared according t,o the test results.

关键词： low-yield-strength shear panel damper (LYSPD) dynamic simulation dynamic loading tests mechanical prooertv fatigue evaluation

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Finite Element Simplified fatigue Analysis Method for a Non-tubular Joint of an Offshore Jacket Platform

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Journal of Marine Science and Application 2011年第3期10卷 321-324页

作者： Qinghua Bao Heng Feng China National Petroleum O.ff）hore Engineering Co. Ltd. Beij＇ing 100176 China

This paper proposes the finite element simplified fatigue analysis method for fatigue evaluation of the composite non-tubular joint structure of an offshore jacket subjected to wave loads. The skirt pile sleeve of the offshore jacket, which had been in service, was taken as an example of the non-tubular joint structure. SACS software was used for global analysis of multi-directional wave loads for the jacket platform, and ALGOR software was used to build a finite element model, perform finite element analysis, post-process stress results for acquiring the stress range, and perform fatigue evaluation. The analysis results indicate that the extreme stress range is within the allowable stress range and meets the requirements of DNV code. That means the simplified fatigue analysis method is effective and can be used in fatigue design for the non-tubular joint structure of an offshore jacket.

关键词： offshore jacket platform skirt pile sleeve finite element fatigue evaluation

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