TY - JOUR AU - Khalid, Mohd Aman AU - Bansal, Sahil TI - Improved stochastic subset optimization method for structural design optimization JF - ADVANCES IN ENGINEERING SOFTWARE J2 - ADV ENG SOFTW VL - 188 PY - 2024 PG - 13 SN - 0965-9978 DO - 10.1016/j.advengsoft.2023.103568 UR - https://m2.mtmt.hu/api/publication/34669219 ID - 34669219 LA - English DB - MTMT ER - TY - JOUR AU - Saves, Paul AU - Lafage, Remi AU - Bartoli, Nathalie AU - Diouane, Youssef AU - Bussemaker, Jasper AU - Lefebvre, Thierry AU - Hwang, John T. AU - Morlier, Joseph AU - Martins, Joaquim R. R. A. TI - SMT 2.0: A Surrogate Modeling Toolbox with a focus on hierarchical and mixed variables Gaussian processes JF - ADVANCES IN ENGINEERING SOFTWARE J2 - ADV ENG SOFTW VL - 188 PY - 2024 PG - 16 SN - 0965-9978 DO - 10.1016/j.advengsoft.2023.103571 UR - https://m2.mtmt.hu/api/publication/34644980 ID - 34644980 LA - English DB - MTMT ER - TY - JOUR AU - Postigo, Jose A. AU - Garaigordobil, Alain AU - Ansola, Ruben AU - Canales, Javier TI - Topology optimization of Shell-Infill structures with enhanced edge-detection and coating thickness control JF - ADVANCES IN ENGINEERING SOFTWARE J2 - ADV ENG SOFTW VL - 189 PY - 2024 PG - 14 SN - 0965-9978 DO - 10.1016/j.advengsoft.2023.103587 UR - https://m2.mtmt.hu/api/publication/34608942 ID - 34608942 AB - Topology optimization is a valuable tool in additive manufacturing, but its application requires careful consideration of various constraints to refine the optimization outcome. In additive manufacturing, components often consist of two distinct regions: a solid shell forming the exterior and a porous infill occupying the interior. This work introduces a novel approach based on the SIMP (Solid Isotropic Material with Penalization) method, aiming to optimize both the shell and infill concurrently. The proposed method incorporates a series of filtering processes that effectively separate the structure into two phases: the shell and the infill. This separation allows for precise control over the desired coating thickness by employing the SUSAN edge -detector method and introducing a new parameter designed for explicit thickness control. Additionally, a new constraint based on the structural skeleton has been introduced to ensure the preservation of a minimum length scale. LA - English DB - MTMT ER - TY - JOUR AU - Wu, Yi AU - Li, Pengfei AU - Li, Qiqi AU - Liu, Bo TI - Topology optimization for energy absorption of quasi-brittle structures undergoing dynamic fractures JF - ADVANCES IN ENGINEERING SOFTWARE J2 - ADV ENG SOFTW VL - 187 PY - 2024 PG - 14 SN - 0965-9978 DO - 10.1016/j.advengsoft.2023.103567 UR - https://m2.mtmt.hu/api/publication/34581550 ID - 34581550 AB - In this paper, we introduce a topology optimization approach aimed at improving the energy absorption of quasi-brittle structures under impact loading. Our method focuses on incorporating dynamic fracture behavior throughout the impact process to maximize the energy acting on the structure. To achieve this, we integrate a dynamic phase field method into density-based topology optimization, enabling us to simulate the initiation and propagation of complex dynamic fractures. The optimization formulation aims to maximize the absorbed energy over a specified period while adhering to material volume and compliance constraints. Sensitivity analysis was originally provided to accelerate computations and optimization. Several numerical examples show that the incorporation of dynamic fracture effects leads to superior energy absorption of the optimized structure compared to static strategies or neglecting the fracture process. Moreover, the proposed scheme facilitates tailored designs for different impact loading rates. LA - English DB - MTMT ER - TY - JOUR AU - Habashneh, Muayad AU - Cucuzza, Raffaele AU - Domaneschi, Marco AU - Movahedi Rad, Majid TI - Advanced elasto-plastic topology optimization of steel beams under elevated temperatures JF - ADVANCES IN ENGINEERING SOFTWARE J2 - ADV ENG SOFTW VL - 190 PY - 2024 SN - 0965-9978 DO - 10.1016/j.advengsoft.2024.103596 UR - https://m2.mtmt.hu/api/publication/34579598 ID - 34579598 LA - English DB - MTMT ER - TY - JOUR AU - Nguyen, M.-N. AU - Lee, D. TI - Design of the multiphase material structures with mass, stiffness, stress, and dynamic criteria via a modified ordered SIMP topology optimization JF - ADVANCES IN ENGINEERING SOFTWARE J2 - ADV ENG SOFTW VL - 189 PY - 2024 SN - 0965-9978 DO - 10.1016/j.advengsoft.2023.103592 UR - https://m2.mtmt.hu/api/publication/34523794 ID - 34523794 N1 - Export Date: 22 January 2024 CODEN: AESOD Correspondence Address: Lee, D.; Department of Architectural Engineering, 209 Neungdong-ro, Gwangjin-gu, South Korea; email: dongkyulee@sejong.ac.kr Funding details: Ministry of Science, ICT and Future Planning, MSIP, 2022R1A2C1003776 Funding details: National Research Foundation of Korea, NRF Funding text 1: This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2022R1A2C1003776 ). All authors approved the final version of the manuscript to be published. AB - This paper, a multi-material topology optimization method (MMTO) is presented for two-dimensional structures using modified ordered solid isotropic material with penalization (SIMP) under multiple constraints such as mass, stiffness, frequency, and stress. The element density is obtained by a density filtering and the Heaviside approximation, which are combined to avoid gray elements and numerical issues of stress. Effective improvement of multiphase material topology optimization was performed including the criteria for stiffness, stress, and free vibration. P-norm stress aggregation is employed to calculate the maximum von Mises stress and sensitivity of von Mises stress is formulated by the adjoint method. The natural frequency and stress constraints are solved simultaneously to enhance the stability and reduce the stress concentration of the optimized structures, which are not much covered in the literature. The multi-mode phenomenon in the eigenfrequency problem is treated by the simply proposed technique. Results indicate that the multi-material designs with multi-constraints can be illustrated and optimized effectively. The optimized topologies, for stress minimization, indicate that the maximum stress can be significantly reduced compared with compliance minimization. The maximum von Mises stress of the topological results considering the maximum stiffness with natural frequency and mass constraints is higher than that maximum stiffness with only mass constraints, which indicates that the optimized structure created considering the eigenvalues is safer. The proposed approach can obtain a reasonable result that effectively controls the stress level and reduces the stress concentration at the high stress regions of multi-phase material structures with multi-constraints. Benchmark numerical examples are presented to confirm the effectiveness of the presented method. © 2024 Elsevier Ltd LA - English DB - MTMT ER - TY - JOUR AU - Tauzowski, Piotr AU - Błachowski, Bartłomiej AU - Lógó, János TI - Optimal topologies considering fatigue with reliability constraint JF - ADVANCES IN ENGINEERING SOFTWARE J2 - ADV ENG SOFTW VL - 189 PY - 2024 PG - 12 SN - 0965-9978 DO - 10.1016/j.advengsoft.2023.103590 UR - https://m2.mtmt.hu/api/publication/34522673 ID - 34522673 N1 - Institute of Fundamental Technological Research of the Polish Academy of Sciences, Warsaw, Poland Budapest University of Technology and Economics, Budapest, Hungary Export Date: 2 February 2024 CODEN: AESOD Correspondence Address: Lógó, J.; Budapest University of Technology and EconomicsHungary; email: logo@ep-mech.me.bme.hu Funding details: Polska Akademia Nauk, PAN Funding details: Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, NKFI, K 138615 Funding text 1: The present study was supported by the NKFI (grant K 138615) - Joint grant of the Hungarian and the Polish Academy of Sciences. LA - English DB - MTMT ER - TY - JOUR AU - Rego, Cesar AU - Mathew, Frank TI - Scatter search for capacitated minimum spanning tree JF - ADVANCES IN ENGINEERING SOFTWARE J2 - ADV ENG SOFTW VL - 186 PY - 2023 PG - 10 SN - 0965-9978 DO - 10.1016/j.advengsoft.2023.103555 UR - https://m2.mtmt.hu/api/publication/34670131 ID - 34670131 LA - English DB - MTMT ER - TY - JOUR AU - Khan, Imran AU - Ullah, Baseer AU - Siraj-ul-Islam, Zahur AU - Ullah, Zahur AU - Khan, Wajid TI - An adaptive B-spline representation of topology optimization design for Additive Manufacturing JF - ADVANCES IN ENGINEERING SOFTWARE J2 - ADV ENG SOFTW VL - 186 PY - 2023 PG - 25 SN - 0965-9978 DO - 10.1016/j.advengsoft.2023.103552 UR - https://m2.mtmt.hu/api/publication/34608933 ID - 34608933 AB - Topology optimization is a renowned structural optimization approach used to compute the optimal topol-ogy for the enhancement of structural performance. It has been in common practice in different engineering fields such as automobile and aerospace. However, there still exist gaps between topology optimization and its engineering operations, which considerably impedes topology optimization's applications. One of these gaps is how to make (especially finite element-based) topology optimization results machine-readable, which means, how to transform these into computer-aided design (CAD) models, which are ready-to-use models for manufacturing. In the proposed work the authors adopted a unique methodology that plugs the gap between topology optimization and manufacturing. This methodology seamlessly integrates the structural analysis tool, boundary description tool and standard CAD geometry representation; equipped with the Hausdorff distance approach for 3D printing/additive manufacturing of optimal structures. Initially, we extract the skeleton of the optimal design (in the form of a points cloud) using the level set method, followed by an interpolation technique with shape preservation property, the extracted skeleton is made dense. Incorporating the shape and curvature information of the data set, an adaptive B-spline approximation is devised for fitting a smooth curve through the points cloud. This approach interprets topology optimization results as a parametric CAD model with minimum possible control points and minimum approximation error. The CAD-based optimal designs are then used for additive manufacturing. The numerical results exhibit in detail the validity and accuracy of the proposed method. LA - English DB - MTMT ER - TY - JOUR AU - Rahhali, M. A. AU - Garcia, T. AU - Spiteri, P. TI - Performances analysis of parallel asynchronous and synchronous algorithms on cloud architecture for PDE JF - ADVANCES IN ENGINEERING SOFTWARE J2 - ADV ENG SOFTW VL - 186 PY - 2023 PG - 12 SN - 0965-9978 DO - 10.1016/j.advengsoft.2023.103550 UR - https://m2.mtmt.hu/api/publication/34573190 ID - 34573190 N1 - Funding Agency and Grant Number: France Grilles [University/CNRS-IN2P3] Funding text: This study has been made possible with the support of France Grilles-cloud thanks to whom we have access to cloud resources LPNHE which is a UMR Sorbonne University/CNRS-IN2P3. In addition, the previous study was made possible by the use of Grid'5000. AB - In order to solve discretized stationary linear or non linear diffusion and convection-diffusion problems, the present paper deals with a comparison between the performances of parallel iterative synchronous or asynchronous algorithms implemented on a Cloud computing architecture with several sizes of the algebraic systems to be solved. The parallel algorithms are briefly and intuitively presented and analysis of their behavior is recalled. In particular, criteria of convergence are recalled and estimates of convergence speed are given. Implementation on cloud architectures are briefly described. Finally, for each kind of problem, the performance of the target algorithms on cloud architectures are analyzed. LA - English DB - MTMT ER -