PSI - Issue 33

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 33 (2021) 843–849

© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the IGF ExCo Abstract This study shows a new approach, which extends a conventional topology optimization algorithm to the possibility of local change of the material orientation. The developed approach perfectly suits to design structures made of anisotropic materials such as composites. The appearing on the market of 3D printers using technology of continues fiber placement make this type of optimization actual for modern engineering industry. The basis to obtain the gradient descent procedure is analyzed and several examples of optimization problems are demonstrated. © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo Keywords: topology optimization; anisotropic material; composites; material orientation; weight optimization; light weight structures. 1. Introduction Topology optimization is a rapidly developing tool for design and engineering of new products. It has many applications in aerospace and automobile industries where lightweight structures are important. The topic of design optimization has developed quite a lot recently, so there are a number of review articles available in the literature [1 3]. The most pioneered studies are connected with Bendsoe [4] and Sigmund [5]. New trend in this area of research is connected with appearing of special 3D printers which can place continues fibers inside of building structure [6-7]. This gives additional freedom to optimization problem – orientation of the This is an open access articl licenses IGF26 - 26th International Conference on Fracture and Structural Integrity Topology optimization with space orientation of reinforcement Boris Fedulov a  , Alexey Fedorenko b a Department of Mechanics and Mathematics, Lomonosov Moscow State University, GSP-1, Leninskiye Gory 1, 119991, Moscow, Russia b Center for Design, Manufacturing and Materials, Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, bld. 1, 121205, Moscow, Russia Boris Fedulov a , Al

 Corresponding author. Tel.: 34-942-200-017 E-mail address: fedulov.b@mail.ru

2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo

2452-3216 © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the IGF ExCo 10.1016/j.prostr.2021.10.094