A novel discrete-continuous material orientation optimization model for stiffness-based concurrent design of fiber composite

Material orientation optimization method for eigenvalue design of shell structures

The Proceedings of Mechanical Engineering Congress Japan ◽

10.1299/jsmemecj.2020.j01206 ◽

2020 ◽

Vol 2020 (0) ◽

pp. J01206

Author(s):

Ryosuke TSUKIHARA ◽

Masatoshi SHIMODA

Keyword(s):

Optimization Method ◽

Shell Structures ◽

Material Orientation ◽

Orientation Optimization

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Orthotropic material orientation optimization method in composite laminates

Structural and Multidisciplinary Optimization ◽

10.1007/s00158-017-1777-2 ◽

2017 ◽

Vol 57 (2) ◽

pp. 815-828 ◽

Cited By ~ 13

Author(s):

Mario Petrovic ◽

Tsuyoshi Nomura ◽

Takayuki Yamada ◽

Kazuhiro Izui ◽

Shinji Nishiwaki

Keyword(s):

Composite Laminates ◽

Orthotropic Material ◽

Optimization Method ◽

Material Orientation ◽

Orientation Optimization

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Material-orientation optimization for tailoring thermal deformation of laminated composite shell structures using a parameter-free approach

Journal of Advanced Mechanical Design Systems and Manufacturing ◽

10.1299/jamdsm.2019jamdsm0083 ◽

2019 ◽

Vol 13 (4) ◽

pp. JAMDSM0083-JAMDSM0083

Author(s):

Masatoshi SHIMODA ◽

Yoshiaki MURAMATSU ◽

Motoki UMEMURA

Keyword(s):

Thermal Deformation ◽

Composite Shell ◽

Laminated Composite ◽

Shell Structures ◽

Material Orientation ◽

Orientation Optimization

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Thermal Performance Optimization in Electric Vehicle Power Trains by Locally Orthotropic Surface Layer Design

Journal of Mechanical Design ◽

10.1115/1.4041220 ◽

2018 ◽

Vol 140 (11) ◽

Cited By ~ 1

Author(s):

Mario Petrovic ◽

Tsuyoshi Nomura ◽

Takayuki Yamada ◽

Kazuhiro Izui ◽

Shinji Nishiwaki

Keyword(s):

Thermal Conductivity ◽

Surface Layer ◽

Scalar Field ◽

Heat Flow ◽

Performance Optimization ◽

Orthotropic Material ◽

Material Distribution ◽

Optimal Orientation ◽

Material Orientation ◽

Orientation Optimization

In this paper, the application of orthotropic material orientation optimization for controlling heat flow in electric car power trains is presented. The design process is applied to a case model, which conducts heat while storing heat-sensitive electronic components. The core of the case is designed using a low thermal conductivity material on order to focus the heat flow into the surface layer, which is designed using a high thermal conductivity material. Material orthotropy is achieved in the surface layer of the case by removing the material at points determined by the optimization analysis. For this purpose, an orthotropic material orientation optimization method was extended to calculate optimal material distribution. This is achieved by transforming the initially obtained optimal orientation vector field into a scalar field through the use of coupled time-dependent nonisotropic Helmholtz equations. Multiple parameters allow the control of the scalar field and therefore the control over material distribution in accordance to the optimal orientation. This allows the material distribution pattern to be scaled depending on the desired manufacturing method. The analysis method is applied to divert heat flow from a specific section of the model while focusing the heat flow to another section. The results are shown for a model with a 0.1 mm thick surface layer of copper and are compared to those results from several other materials and layer thicknesses. Finally, the manufactured design is presented.

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Topology and material orientation optimization based on evolution equations

PAMM ◽

10.1002/pamm.201710337 ◽

2017 ◽

Vol 17 (1) ◽

pp. 739-740 ◽

Cited By ~ 1

Author(s):

Dustin Roman Jantos ◽

Philipp Junker ◽

Klaus Hackl

Keyword(s):

Evolution Equations ◽

Material Orientation ◽

Orientation Optimization

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Thermal Conductivity Design for Locally Orthotropic Materials

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.577-578.437 ◽

2013 ◽

Vol 577-578 ◽

pp. 437-440

Author(s):

Romana Piat ◽

Yuriy Sinchuk

Keyword(s):

Thermal Conductivity ◽

Computational Model ◽

Optimization Problems ◽

Hot Spot ◽

Orthotropic Materials ◽

Principal Stresses ◽

Material Orientation ◽

Elasticity Problems ◽

Optimal Material ◽

Orientation Optimization

In this paper the development of a computational model for the thermal conductivity design for locally orthotropic materials is presented. The material orientation of a two-dimensional locally orthotropic solid subjected to thermal loads is designed for minimization of the local temperature. Two optimization problems are considered: the minimization of the highest (hot-spot) temperature and the minimization of the temperature according to the weights distribution. For both problems rules for calculation of the optimal material orientation are derived analytically. The analysis is based on the idea of the principal stresses method for optimization of material orientation in linear elasticity problems. The results of the analysis are implemented and the developed computational model is tested on an example of the lamella orientation optimization in a metal-ceramic composite.

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