Additive manufacturing of metallic components – Process, structure and properties

Topology optimization is the process of determining the optimal layout of material and connectivity inside a design domain. This paper surveys topology optimization of continuum structures from the year 2000 to 2012. It focuses on new developments, improvements, and applications of finite element-based topology optimization, which include a maturation of classical methods, a broadening in the scope of the field, and the introduction of new methods for multiphysics problems. Four different types of topology optimization are reviewed: (1) density-based methods, which include the popular Solid Isotropic Material with Penalization (SIMP) technique, (2) hard-kill methods, including Evolutionary Structural Optimization (ESO), (3) boundary variation methods (level set and phase field), and (4) a new biologically inspired method based on cellular division rules. We hope that this survey will provide an update of the recent advances and novel applications of popular methods, provide exposure to lesser known, yet promising, techniques, and serve as a resource for those new to the field. The presentation of each method's focuses on new developments and novel applications.

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A survey of structural and multidisciplinary continuum topology optimization: post 2000

Multi-scale computational homogenization: Trends and challenges

https://core.ac.uk/download/pdf/141091.pdf

Thermo-mechanical analysis of Wire and Arc Additive Layer Manufacturing process on large multi-layer parts

Modeling metal deposition in heat transfer analyses of additive manufacturing processes

Elastoplastic analysis of shells without any local iterative calculations by block Newton method

In this work, a finite element procedure for overlapping meshes based on a domain decomposition approach is presented. In the proposed procedure, solutions on different meshes are connected on the domain interface. For the formulation to connect solutions, the Lagrange multiplier method extended from the Nitsche’s method is employed to avoid the limited selection of discretization of the Lagrange multiplier. Further a rectangular mesh on the background of the overlapping meshes is introduced. The interface to connect solutions on overlapping meshes is defined by using jointed cell edges of the background mesh and it is independent to each calculation mesh.

Kazumi Matsui

Papers

Elastoplastic analysis of shells without any local iterative calculations by block Newton method

Finite Element Procedure for Overlapping Meshes Based on Domain Decomposition Approach using Background Rectangular Mesh