tailieunhanh - Ebook Metal machining - Theory and applications: Part 2

(BQ) Part 2 book "Metal machining - Theory and applications" has contents: Finite element methods, applications of finite element analysis, process selection, improvement and control. Invite you to reference. | Childs Part 2 28:3:2000 3:13 pm Page 199 7 Finite element methods In the previous chapter, Sections and established some of the difficulties and issues in analysing even steady-state and plane strain chip formation. The finite element method is a natural tool for handling the non-linearities involved. Section suggested how orthogonal (plane strain) results could be extended to three-dimensional conditions. An eventual goal, particularly for non-plane rake-faced tools, must be the direct analysis of three-dimensional machining; and the finite element method would appear to be the best candidate for this. Chip formation is a difficult process to analyse, even by the finite element method. This chapter is mainly concerned with introducing the method and reviewing the learning process – from the 1970s to the present – of how to use it. Its applications are the subject of Chapter 8. There are, in fact, several finite element methods, not just one. There is a coupling of thermal and mechanical analysis methods. In the mechanical domain, different approaches have been tried and are still in use. The differences cover how material stress–strain relations are described (modelling elasticity as well as plasticity, or neglecting elastic components of stress and strain); how flow variations are described (relative to fixed axes, or convecting with material elements – the Eulerian and Lagrangian views of fluid and solid mechanics); how the elements are constructed (uniform, or structured according to physical intuition, or allowed to remesh adaptively in response to the results of the calculations); and how some factors more specific to metal machining (for example the separation of the chip from the work) are dealt with. A general background to these (to raise awareness of issues more than to support use in detail) is given in Section . Section surveys developments of the finite element approach (applied to chip formation), from the 1970s to the 1990s. .

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• Metal machining
• Theory and applications
• Finite element methods
• Applications of finite element analysis
• Process selection
• Improvement and control
• Chip formation fundamentals
• Work and tool materials
• tool damage
• Experimental methods
• Advances in mechanics
• High power continuous wave 1064 nm dpss laser
• Machining semiconductor and metal materials
• Diode pumped solid state
• The optically anisotropic crystal NdYVO4
• The pumping range
• Mechanical sciences
• GPU accelerated meshfree simulations
• Friction model in metal machining
• Meshfree simulation
• Orthogonal cutting
• GPU computing
• The electrical discharge machining
• The EDM processes
• Metal matrix composite
• Process parameters
• CATIA V5 Workbook
• Design Prismatic Machining
• Material
• natural continuation
• Drafting
• Generative Stress Analysis
• Sheet Metal Designer
• Knowledgeware Tools
• Tool wear rate optimization
• Taguchi method for die steels
• The electrical discharge machining
• Metal Removal Rate
• Tool Wear Rate
• The TWR in PMEDM
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