An efficient design methodology for graded surface-based lattice structures using free-size optimization and enhanced mapping method

Name: An efficient design methodology for graded surface-based lattice structures using free-size optimization and enhanced mapping method
Author: Şimşek, Uğur, Özdemir, Mirhan, Şendur, Polat

İsim	An efficient design methodology for graded surface-based lattice structures using free-size optimization and enhanced mapping method
Yazar	Şimşek, Uğur, Özdemir, Mirhan, Şendur, Polat
Basım Tarihi:	2021-11-15
Basım Yeri	- Elsevier
Konu	Additive manufacturing, Double gyroid, Frequency response, Functionally graded lattice structures, Modal testing, Optimization
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0264-1275
Kayıt Numarası	1e435634-d6ff-4bb3-8a7c-5635c604d22b
Lokasyon	Mechanical Engineering
Tarih	2021-11-15
Örnek Metin	In this paper, a novel Free-size Optimization based Graded Lattice Generation (FOGLG) method, that generates the functionally graded lattice (FGL) structures using free-size optimization, is proposed. In addition, the reconstruction method suitable for the construction of 3D FGL structures using Additive Manufacturing (AM) is presented. The proposed method employs the thickness information of each shell element obtained from a free-size optimization algorithm to determine the relative element densities, which collectively represent the set of design parameters. An additive manufacturing compatible mapping method of generating FGLs from 2D free-size optimization results is also proposed. The efficiency of the FOGLG was compared to the existing homogenization-based optimization (HMTO) and size optimization algorithms. The objective function of the three optimization strategies targets to minimize the total acceleration spectrum in the frequency range of interest. The effectiveness and validity of this new design method was also demonstrated from laser vibrometer measurements. The results show that the FOGLG reduces the overall acceleration spectrum by 3.6% and 19.4% compared to the HMTO and size optimization algorithms, respectively. High correlation between the numerical and experimental results validates the effectiveness of the proposed algorithm.
DOI	10.1016/j.matdes.2021.110039
Cilt	210

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An efficient design methodology for graded surface-based lattice structures using free-size optimization and enhanced mapping method

Yazar Şimşek, Uğur, Özdemir, Mirhan, Şendur, Polat

Basım Tarihi 2021-11-15

Basım Yeri - Elsevier

Konu Additive manufacturing, Double gyroid, Frequency response, Functionally graded lattice structures, Modal testing, Optimization

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0264-1275

Kayıt Numarası 1e435634-d6ff-4bb3-8a7c-5635c604d22b

Lokasyon Mechanical Engineering

Tarih 2021-11-15

Örnek Metin In this paper, a novel Free-size Optimization based Graded Lattice Generation (FOGLG) method, that generates the functionally graded lattice (FGL) structures using free-size optimization, is proposed. In addition, the reconstruction method suitable for the construction of 3D FGL structures using Additive Manufacturing (AM) is presented. The proposed method employs the thickness information of each shell element obtained from a free-size optimization algorithm to determine the relative element densities, which collectively represent the set of design parameters. An additive manufacturing compatible mapping method of generating FGLs from 2D free-size optimization results is also proposed. The efficiency of the FOGLG was compared to the existing homogenization-based optimization (HMTO) and size optimization algorithms. The objective function of the three optimization strategies targets to minimize the total acceleration spectrum in the frequency range of interest. The effectiveness and validity of this new design method was also demonstrated from laser vibrometer measurements. The results show that the FOGLG reduces the overall acceleration spectrum by 3.6% and 19.4% compared to the HMTO and size optimization algorithms, respectively. High correlation between the numerical and experimental results validates the effectiveness of the proposed algorithm.

DOI 10.1016/j.matdes.2021.110039

Cilt 210