A new sensitivity-based mapping scheme for topology optimization of graded TPMS designs

Name: A new sensitivity-based mapping scheme for topology optimization of graded TPMS designs
Author: Parlayan, O., Özdemir, Mirhan, Gayir, C. E., Şimşek, Uğur, Kiziltas, G.

İsim	A new sensitivity-based mapping scheme for topology optimization of graded TPMS designs
Yazar	Parlayan, O., Özdemir, Mirhan, Gayir, C. E., Şimşek, Uğur, Kiziltas, G.
Basım Tarihi:	2023-12
Basım Yeri	- Springer
Konu	Additive manufacturing, Graded TPMS, Modified SIMP, Sensitivity-based mapping, Topology optimization
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0268-3768
Kayıt Numarası	8911d135-b080-4259-8f81-aae6499ec82d
Tarih	2023-12
Notlar	TÜBİTAK
Örnek Metin	Graded TPMS topologies display excellent mechanical and thermal properties. Design schemes targeting optimal performance exist, but final reconstructed designs still suffer from performance degradation. To overcome this challenge, we propose an automated design framework based on the integration of a homogenization-based topology optimization scheme and a new mapping strategy. Optimized designs obtained using a modified SIMP technique are reconstructed as graded gyroid structures. Unlike mapping strategies using relative density values prior to TPMS infill, for the first time, we make use of readily available adjoint sensitivities for mapping optimal densities to graded gyroid structures. Results show that the proposed framework delivers performance-preserving graded designs when compared to original optimized designs obtained using OptiStruct and superior performance in comparison to standard density-based mapping methods. The resulting graded design is manufactured using additive manufacturing, and three-point bending tests are performed confirming simulation results and demonstrating the applicability of the presented design scheme.
DOI	10.1007/s00170-023-12439-1
Cilt	129

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A new sensitivity-based mapping scheme for topology optimization of graded TPMS designs

Yazar Parlayan, O., Özdemir, Mirhan, Gayir, C. E., Şimşek, Uğur, Kiziltas, G.

Basım Tarihi 2023-12

Basım Yeri - Springer

Konu Additive manufacturing, Graded TPMS, Modified SIMP, Sensitivity-based mapping, Topology optimization

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0268-3768

Kayıt Numarası 8911d135-b080-4259-8f81-aae6499ec82d

Tarih 2023-12

Notlar TÜBİTAK

Örnek Metin Graded TPMS topologies display excellent mechanical and thermal properties. Design schemes targeting optimal performance exist, but final reconstructed designs still suffer from performance degradation. To overcome this challenge, we propose an automated design framework based on the integration of a homogenization-based topology optimization scheme and a new mapping strategy. Optimized designs obtained using a modified SIMP technique are reconstructed as graded gyroid structures. Unlike mapping strategies using relative density values prior to TPMS infill, for the first time, we make use of readily available adjoint sensitivities for mapping optimal densities to graded gyroid structures. Results show that the proposed framework delivers performance-preserving graded designs when compared to original optimized designs obtained using OptiStruct and superior performance in comparison to standard density-based mapping methods. The resulting graded design is manufactured using additive manufacturing, and three-point bending tests are performed confirming simulation results and demonstrating the applicability of the presented design scheme.

DOI 10.1007/s00170-023-12439-1

Cilt 129