Dynamics of Systems Operating in Motion Environments

点击翻译按钮获取中文摘要

Many articulated dynamic systems operate in essentially prescribed motion environments. This means that though subsystems are dynamically coupled to the overall system, while the smaller subsystem is significantly affected by the larger system, it has minimal impact upon it. Shipboard systems often fall into this category. Shipboard equipment, aircraft, and personnel are directly affected by the ship motion but do not significantly influence it. The long-term objective of the proposed research is to develop appropriate methodology and computational tools for investigating the complex behaviour of such dynamic systems operating in shipboard motion environments, and using these tools to develop comprehensive understanding of the dynamic interfaces and behaviour of shipboard systems. Short-term objectives involve a combination of refining previously-developed analysis methodologies and expanding them into new areas. Application areas are selected to include rigid multibody dynamic systems where the behaviour of suspension seats on high speed craft will be considered; flexible multibody dynamic systems where maritime helicopter and floating wind turbine transient blade dynamics will be considered; and postural stability of humans where biodynamic models will be developed to assist in predicting the frequency of motion induced interruptions. The proposed research will build on recent advances in the field and achievements within the research group. The approach will remain consistent with recent work and continue to involve theoretical, computational, and experimental components. Fundamental research in this niche area of shipboard dynamic systems is highly topical due to a continuing global trend toward operating shipboard dynamic systems on smaller ships and in increasingly severe sea conditions. It has particular applicability in Canada over the next decade as Canada embarks on the largest shipbuilding program since the end of the Second World War with the design and construction of new frigates, supply ships, patrol boats, and icebreakers. The present research programme will contribute to maximizing operability and safety relating to shipboard personnel and equipment.