By Kuang-Hua Chang
This is one e-book of a four-part sequence, which goals to combine dialogue of recent engineering layout ideas, complex layout instruments, and commercial layout practices during the layout process. Through this sequence, the reader will:
- Understand simple layout rules and smooth engineering layout paradigms.
- Understand CAD/CAE/CAM instruments to be had for varied layout similar tasks.
- Understand easy methods to positioned an built-in method jointly to behavior product layout utilizing the paradigms and tools.
- Understand commercial practices in applying digital engineering layout and instruments for product development.
- Provides a accomplished and thorough insurance on crucial components for product functionality overview utilizing the digital engineering paradigms
- Covers CAD/CAE in Structural research utilizing FEM, movement research of Mechanical structures, Fatigue and Fracture Analysis
- Each bankruptcy comprises either analytical tools and computer-aided layout tools, reflecting using smooth computational instruments in engineering layout and practice
- A case examine and educational instance on the finish of every bankruptcy supply hands-on perform in imposing off-the-shelf computing device layout tools
- Provides tasks on the finish of the e-book displaying using Pro/ENGINEER® and SolidWorks ® to enforce thoughts mentioned within the book
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Extra info for Product Performance Evaluation with CAD/CAE
Example text
The solutions are approximate when any of these relations is only approximately satisfied or is only an approximation of reality. There always exist uncertainties in modeling and analysis of structural components. It is imperative to account for these uncertainties in order to design more reliable mechanical systems. In this chapter, we start by briefly reviewing analytical methods and then discuss finite element methods. Essential ingredients in using FEM for modeling and analysis of structural problems, such as mesh generation and boundary conditions, are discussed in detail.
The linearly distributed force T becomes equivalent to point forces applied at nodes. Material properties, section properties, and distributed loads, in addition to the physical domain, are discretized in accordance with the finite element mesh. 10, is discretized into four finite elements. As a result, the cross-section and distributed load (and material property if applicable) are also discretized, most likely as average values within each respective element. The second discretization is function discretization.
As stated earlier, the finite element method starts with the principle of virtual work. 22) U where U is the strain energy, and s and ε are stress and strain tensors, respectively. Note that for a 2D structure of biaxial stress state, s ¼ [sx, sy, sxy]T and ε ¼ [εx, εy, gxy]T. 23) 66 Chapter 2 where f and T are the body force and external traction vectors, respectively, and du is the vector of virtual displacements. 24) G1 where Z is a kinematically admissible virtual displacement space. 24 must be solved through two important discretizations, domain and function.