Finite Element Modeling and Simulation with ANSYS Workbench, Second Edition

Xiaolin Chen, Yijun Liu

• Éditeur: CRC Press
• Année: 2018
• ISBN:
  9781351045858
• Édition: 2
• Sujet: Physical Sciences
• Sous-sujet: Mechanics

Finite Element Modeling and Simulation with ANSYS Workbench 18, Second Edition, combines finite element theory with real-world practice. Providing an introduction to finite element modeling and analysis for those with no prior experience, and written by authors with a combined experience of 30 years teaching the subject, this text presents FEM formulations integrated with relevant hands-on instructions for using ANSYS Workbench 18. Incorporating the basic theories of FEA, simulation case studies, and the use of ANSYS Workbench in the modeling of engineering problems, the book also establishes the finite element method as a powerful numerical tool in engineering design and analysis.

Features

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• Uses ANSYS Workbench™ 18, which integrates the ANSYS SpaceClaim Direct Modeler™ into common simulation workflows for ease of use and rapid geometry manipulation, as the FEA environment, with full-color screen shots and diagrams.

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• Covers fundamental concepts and practical knowledge of finite element modeling and simulation, with full-color graphics throughout.

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• Contains numerous simulation case studies, demonstrated in a step-by-step fashion.

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• Includes web-based simulation files for ANSYS Workbench 18 examples.
• Provides analyses of trusses, beams, frames, plane stress and strain problems, plates and shells, 3-D design components, and assembly structures, as well as analyses of thermal and fluid problems.

1

Introduction

1.1Some Basic Concepts

The finite element method (FEM), or finite element analysis (FEA), is based on the idea of building a complicated object with simple blocks, or, dividing a complicated object into smaller and manageable pieces. Application of this simple idea can be found everywhere in everyday life (Figure 1.1), as well as in engineering. For example, children play with LEGO® toys by using many small pieces, each of very simple geometry, to build various objects such as trains, ships, or buildings. With more and more smaller pieces, these objects will look more realistic.

Figure 1.1

Objects built with simple and small pieces: (a) a fire engine built with LEGO® (http://lego.wikia.com/wiki/10020_Santa_Fe_Super_Chief); and (b) a house built with many elements—bricks, beams, columns, panels, and so on.

In mathematical terms, this is simply the use of the limit concept, that is, to approach or represent a smooth object with a finite number of simple pieces and increasing the number of such pieces in order to improve the accuracy of this representation.

1.1.1Why FEA?

Computers have revolutionized the practice of engineering. Design of a product that used to be done by tedious hand drawings has been replaced by comp...