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WANG Mao-long, LIU Ming, CAO Shuang-yin. MODIFYING THE DYNAMIC CHARACTERISTIC OF AN UNDAMPED STRUCTURE BY MASS AND STIFFNESS ADDITION TECHNIQUE[J]. Engineering Mechanics, 2004, 21(5): 178-182.
Citation: WANG Mao-long, LIU Ming, CAO Shuang-yin. MODIFYING THE DYNAMIC CHARACTERISTIC OF AN UNDAMPED STRUCTURE BY MASS AND STIFFNESS ADDITION TECHNIQUE[J]. Engineering Mechanics, 2004, 21(5): 178-182.
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MODIFYING THE DYNAMIC CHARACTERISTIC OF AN UNDAMPED STRUCTURE BY MASS AND STIFFNESS ADDITION TECHNIQUE

  • College of Civil engineering, Southeast University, Nanjing 210096, China;2. Department of Civil Engineering, Shenyang Architectural and Civil Engineering Institute, Shenyang 110015, China

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  • Received Date: January 23, 2003
  • Revised Date: May 17, 2003
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  • A new dynamic characteristic modification method is proposed for structural optimum design and modification. Based on the dynamic characteristic of an original model, the transform analysis of undamped system equation is performed with the frequency characteristic functions at designated modification freedoms, and the general expressions of local mass and stiffness parameters are derived. Numerical examples and a three-story masonry of half scale model test are given to demonstrate the validation of the modification method and the general expressions, and the modified results can meet the predetermined requirements.
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