Development of the method for multibody system analysis based on the canonical theory for constrained system applicable to the parallel computation and the state estimation

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K17994
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Dynamics/Control
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Hara Kensuke 東京工業大学, 工学院, 助教 (70508259)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: マルチボディダイナミクス / 流体関連振動 / Rotationless formulation / 並列計算 / 状態推定

Outline of Final Research Achievements

In the design of a floating production, storage and offloading (FPSO) unit and a floating offshore wind turbine, it is important to evaluate dynamical behavior of systems with floating structures and devices connected by mooring lines and riser cables for carrying resources, supplying energy and so on.
This study focuses on a multi-body system with huge degrees of freedom and develops a model applicable to the parallel computation and the state estimation techniques. The present model introduces an incremental description of rotation of the body, which ensures a computation accuracy regarding a time step size. In addition, the local Lagrange multiplier method is employed for development of the model applicable to the parallel computation technique. Then, the proposed method is validated by comparisons with experimental results and a conventional method.

Free Research Field

機械力学・制御