Design and Development of Metal-Forming Processes and by Ming Wang Fu

By Ming Wang Fu

This e-book provides cutting-edge examine on forming procedures and shaped steel product improvement aided via the Finite aspect procedure (FEM). utilizing wide and informative illustrations, tables and pictures, it systematically offers real-life case experiences and validated findings relating to a number of forming procedures and strategies aided by way of FEM simulation, and addresses a number of matters regarding steel shaped half layout, method decision, die layout and die provider existence research and prolongation, in addition to product caliber coverage and improvement.

Metal forming has been time-honored in lots of industries. This conventional production approach, besides the fact that, has lengthy been associated with decades of apprenticeship and expert craftsmanship, and its traditional layout and improvement paradigm seemed to contain extra information and trial-and-error than in-depth medical calculation, research and simulation. The layout paradigm for forming techniques and steel shaped product improvement hence can't meet the present calls for for brief improvement lead-times, low construction charges and excessive product caliber. With the arrival of numerical simulation applied sciences, the layout and improvement of forming tactics and steel shaped items are conducted because of FEM simulation, permitting all of the strength layout areas to be pointed out and evaluated, and the easiest layout to finally be decided and applied. this sort of layout and improvement paradigm goals at making sure “designing correct the 1st time” and decreasing the necessity for trial-and-error within the workshop. This ebook offers postgraduates, production engineers and execs during this box with an in-depth figuring out of the layout strategy and enough wisdom to help steel shaped half layout, forming procedure decision, tooling layout, and product caliber coverage and keep an eye on through FEM simulation.

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Additional resources for Design and Development of Metal-Forming Processes and Products Aided by Finite Element Simulation

Example text

Therefore, Eq. 1) is a general equation, which represents the working relationship of a complex system in any physical domain. Taking an object deformation as an instance, Eq. 1) represents the property and behavior relationship of the system under an external loading {F}. W. 1007/978-3-319-46464-0_2 21 22 2 Rigid-Plastic Finite Element Method and FE Simulation displacements or deformation velocities of nodes. {F} is the external loading, which causes the deformation represented by the displacements or deformation velocities of the nodes, but determined by the properties of the system.

The complex system over the continuous physical domain is discretized into simple geometric shapes called elements for solving the governing equations. This discretization process is called meshing. For a FEM mesh, the points in which the elements are connected are called nodes. A FEM mesh thus consists of all the elements and nodes. FEM can be used for solving field physical variables of concern in different domains including physical, mechanical, and thermal domains represented by governing equations, which can be simplified as a set of simultaneous algebraic linear equations after linearization in the following: ½K Šfug ¼ fF g ð2:1Þ where [K] is the property-related matrix; {u} is the vector of physical variables to be solved and represents the working behaviors of the system of concern; and {F} is an external loading.

The applications of FE simulation in metal forming include metal-formed part design, forming process determination, die design, defect prediction, product quality control, and assurance, covering dimensional accuracy, surface quality control, and mechanical properties assurance. In addition, prediction and analysis of microstructure evolution of deforming materials is also a promising application. These applications are based on the revealed physical variables and the identified phenomena and behaviors in the deformation process of a forming system under a certain working condition by FE simulation.

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