|Affiliation||Department of Mechanical Engineering|
|Fields of Research||Mechanical dynamics / vibration dynamics|
|Academic Societies||The Japan Society of Mechanical Engineers / Society of Automotive Engineers of Japan, Inc / The Society of Rubber Science and Technology, Japan|
Please append ".tut.ac.jp" to the end of the address above.
|Researcher information URL（researchmap）||Researcher information|
My research focuses on vibration behavior for machine structure. Especially, I stick to the research method of deriving frequency equation.
Now, the subjects of my study are
(A) Vibration behavior analysis of rotating body
(B) Study of dynamic design for machine structure
Theme1：Dynamic analysis of tire
We do a research of vibration anaysis for tires. tire is a high damping structure and an important automotive's parts. Vibaration behavior of a tire is really complex because it becomes deformed by road contact and rolling. In this study, we suggest a tire model that has small number of degrees of freedom and a new approach for tire vibration analysis.
Theme2：Study of dynamic design for machine structure
This study is a development of a new dynamic design method for machine structure focused on damping characteristics and condition of constraint. For reduction of noise and vibration, we often redesign the dynamic chracteristics. In that case, it is important how to decide design factors in sub-structure as transfer path of vibration. We suggest a new approach using receptance method which enabled us to understand optimized design by using intuition.
Theme3：Study of damping characteristics of rubber
Natural rubber (NR), which is both a biomass and viscoelastic material, has excellent dynamic characteristics. It is useful for packing and attenuation material. However, NR has lower damping characteristics than synthetic rubbers such as butyl rubber. Therefore, it is necessary to improve the dynamic characteristics of NR for damping. In this study, we developed attenuation materials based on NR and cellulose composites. Damping characteristics were evaluated from vibration tests with a damping beam using NR/cellulose composites. Tests revealed the effect of particle shapes, compounding ratio, and orientation distribution on damping characteristics.