| Project/Area Number |
18560234
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Dynamics/Control
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| Research Institution | Iwaki Meisei University |
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Principal Investigator |
SHIMIZU Nobuyuki Iwaki Meisei University, College of Science and Technology, Professor (10196529)
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| Project Period (FY) |
2006 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
|
| Budget Amount *help |
¥3,840,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥540,000)
Fiscal Year 2007: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2006: ¥1,500,000 (Direct Cost: ¥1,500,000)
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| Keywords | damping matrix / viscoelastic material / nonlinear behavior / numerical integration method / fractional differential model / nonlinear FEM |
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| Research Abstract |
Formulation and program development of damping matrix of viscoelastic body have been carried out for two years. In the first year the experiments have been conducted for investigating linear and nonlinear characteristics of a viscoelastic material. From linear experiments, frequency characteristics of viscoelastic body were elucidated and fractional differentiation model for constitutive law was established. From nonlinear experiments, frequency and strain dependences were elucidated, and the damping characteristics for frequency and strain dependences were obtained. In the second year, nonlinear finite element equations of motion involving newly developed damping matrix were established by means of the finite element procedure. In parallel to this study, high performance numerical integration algorithms were proposed. Numerical algorithm based on the derived nonlinear finite procedure and established numerical integration schemes was developed.
Properties of the derived damping matrix are needed to be investigated in the future.
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