1 Engineering Design and Product Development, Department of Mechanical Engineering, Technical University of Denmark2 Department of Mechanical Engineering, Technical University of Denmark3 Department of Management Engineering, Technical University of Denmark
Most products and machines involve some kind of controlled movement. From window casements to DVD players, from harbor cranes to the shears to prune your garden, all these machines require mechanisms to move. This course intends to provide the analytical and conceptual tools to design such mechanisms. This is a horizontal subject, which means you will be asked to make use of your knowledge in different disciplines, specially statics and dynamics, but also material selection, general product development, etc. At the end of this course you will be able to: • Generate alternative configurations for mechanisms that follow a particular trajectory, that need to occupy certain positions or that perform special functions using synthesis tools. • Analyze a mechanism from its kinematic characteristics (speed, velocity and acceleration) • Evaluate the best solution from different mechanisms configurations using criteria such as size, performance parameters, operation environment, etc. Content: Understanding Mechanisms Design (2 weeks) Definitions, mechanisms representations, kinematic diagrams, the four bar linkage, mobility, applications of mechanisms, types of mechanisms, special mechanisms, the design process of mechanisms and relation to other subjects (statics, and dynamics). At the end of this module you will be able to identify the different types of mechanisms, understand its components and assess the relation of this course to other courses. Analyzing mechanisms: Position, velocity and acceleration determination (2 weeks) Graphical position analysis, analytical position analysis, graphical velocity analysis, analytical velocity analysis, instant centers, velocity analysis using instant centers, transfer functions, conservation of energy and power, virtual work, quality of mechanisms, summary: equations for various mechanisms. At the end of this module you will be able to analyze existing mechanisms and to describe their movement. Designing mechanisms (7 weeks) Type synthesis and dimensional synthesis, function generation, path generation, three precision points in multi-loop mechanisms, freudenstein’s equation for three point function generation, synthesis of mechanisms for specific applications. At the end of this module you will be able to apply systematic procedures and use different methods to find a suitable configuration for a mechanism that complies with motion, trajectory and/or function requirements. Industrial cases and design evaluation (2 weeks) Quality evaluation, other design criteria, examples of the design process of mechanisms in industry.