A level set-based topology optimization method for simultaneous design of elastic structure and coupled acoustic cavity using a two-phase material model

2017 ◽  
Vol 404 ◽  
pp. 15-30 ◽  
Author(s):  
Yuki Noguchi ◽  
Takashi Yamamoto ◽  
Takayuki Yamada ◽  
Kazuhiro Izui ◽  
Shinji Nishiwaki
Keyword(s):  
Topology Optimization ◽  
Level Set ◽  
Material Model ◽  
Optimization Method ◽  
Elastic Structure ◽  
Two Phase ◽  
Acoustic Cavity ◽  
Simultaneous Design ◽  
Topology Optimization Method

Topology Synthesis of Two-Phase Compliant Actuators

1999 ◽  
Author(s):  
Ole Sigmund
Keyword(s):  
Topology Optimization ◽  
Material Design ◽  
Optimization Method ◽  
The Other ◽  
Design Domain ◽  
Active Materials ◽  
Two Phase ◽  
Thermal Actuators ◽  
Compliant Actuators ◽  
Topology Optimization Method

Abstract This paper describes how the topology optimization method can be used as a tool for the synthesis of two-phase compliant actuators. Two materials, one or both being active materials, are distributed in a design domain such that the work performed on an elastic workpiece is maximized. The two-material design is obtained by introducing two variables per element. One variable determines the relative density of material in the element and the other variable determines the material type. Examples demonstrate the design of thermal actuators and gripping mechanisms.

A level set-based topology optimization for fluid-structure coupled problems by using two-phase material model

2016 ◽  
Vol 140 (4) ◽  
pp. 3430-3430
Author(s):  
Takashi Yamamoto ◽  
Yuki Noguchi ◽  
Takayuki Yamada ◽  
Kazuhiro Izui ◽  
Shinji Nishiwaki
Keyword(s):  
Topology Optimization ◽  
Level Set ◽  
Material Model ◽  
Coupled Problems ◽  
Two Phase ◽  
Fluid Structure

Displacement and Stress Constrained Topology Optimization

2013 ◽  
Author(s):  
Meisam Takalloozadeh ◽  
Krishnan Suresh
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Topology Optimization ◽  
Level Set ◽  
Numerical Experiments ◽  
Optimization Method ◽  
Stress Constraints ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Topology Optimization Method

The objective of this paper is to demonstrate a topology optimization method subject to displacement and stress constraints. The method does not rely on pseudo-densities; instead it exploits the concept of topological level-set where ‘partial’ elements are avoided. Consequently: (1) the stresses are well-defined at all points within the evolving topology, and (2) the finite-element analysis is robust and efficient. Further, in the proposed method, a series of topologies of decreasing volume fractions are generated in a single optimization run. The method is illustrated through numerical experiments in 2D.

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