Research On CAD Modeling Technology Of Magneto-rheological Damper And Applications

Since 1980th, the Magnetorheological Technology has been developing rapidly; researches on MR Damping Equipment resulted in many inspiring achievements which revealed bright prospect for human being. MR Damper is a hot research spot internationally because of its small volume, low power requirements, big damping force, wide dynamic range, high frequency response, wide applying occasions, etc. Domestic researchers are also attaching importance to it gradually.On the basis of the research on working principle & structural knowledge of MR Damper, research status both at home and abroad, this thesis aims at influencing factors to capability of MR Damper, structural parameter of parts and accessories and tooling to meet the requirements of the project -'Key-Technologies-Tackle in Vehicle MR damper for semi-active control'.There are five chapters in this thesis:Chapter 1 summarizes CAD technologies related to MR Damper, such as modeling, parametric design, tooling design and management, the integration of design and production, then analyzes the problems which were not touched or unsolved and presented the study content of the thesis;Chapter 2, the author sets up a mathematical model and uses FEA to analyze the magnetic field of the aperture. The function of the magnetic density is gained to provide a connection between damping performance control and structural design;Chapter 3, researches on structure and main parameter of parts and accessories of MR Damper, the coding rule and characteristic warehouse are set up, which provide models for PDM system and parametric design of MR Damper, the author also analyzes parametric design of parts and accessories;Chapter 4 focuses on tooling related to parts of MR Damper, the author designs and detailedly describes knowledge base for tooling, then a tooling-design system example based on the above knowledge base is given, which provides an approach to concurrent design of parts and tooling and normalizing arts and crafts of damping products;Chapter 5, sum-up of the thesis and the expectation of the future work.