Article
Engineering, Multidisciplinary
Mian Zhou, Mi Xiao, Yan Zhang, Jie Gao, Liang Gao
Summary: The proposed marching cubes-based isogeometric topology optimization method accurately describes structural boundaries and creates precise material description models, with the addition of relaxed topology derivatives to improve method robustness.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Chemistry, Physical
Shuangyuan Cao, Hanbin Wang, Jianbin Tong, Zhongqi Sheng
Summary: This study proposes a method that combines bi-directional evolutionary structural optimization with topological sensitivity to address the issue of hole nucleation in level set topology optimization. The method removes material from the design domain based on defined sensitivity thresholds to nucleate holes.
Article
Engineering, Multidisciplinary
Masaki Noda, Kei Matsushima, Takayuki Yamada
Summary: This paper presents an orientation angle optimization method for the design of fiber-reinforced composite materials using topology optimization. The method utilizes a topological derivative to measure the sensitivity of the objective function with respect to a topological change in anisotropic materials and incorporates this sensitivity into a gradient-based optimization algorithm to obtain better optimal candidates. The effectiveness of the proposed method is verified through numerical examples.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Materials Science, Multidisciplinary
Lei Zhang, Zhe Ding, Wei Sha, Yan Zhang, Mi Xiao, Liang Gao, Wei-Hsin Liao
Summary: This paper proposes a level set-based multi-material topological design method for micro-architectured materials with three or more phases. The method utilizes a difference-set-based multi-material level set model to represent the topology of each phase and splits the multi-material design problem into binary-phase topological design sub-problems. The effectiveness of the proposed method is demonstrated through numerical examples and additive-manufactured specimens.
MATERIALS & DESIGN
(2023)
Article
Computer Science, Interdisciplinary Applications
Marcelo H. Kobayashi, Robert A. Canfield, Raymond M. Kolonay
Summary: This paper introduces a two-point topological derivative for elasticity and a cellular developmental method for layout optimization of structures. The method can easily account for member sizes and angle constraints among members of the frame and solve optimization problems in structural mechanics. Benchmark problems are solved to demonstrate the capability of the cellular developmental method.
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
(2021)
Article
Automation & Control Systems
Peter Gangl, Kevin Sturm
Summary: In this paper, we investigate the optimal distribution of two materials on C-2 submanifolds M of dimension d - 1 in R-d using the topological derivative. We analyze the perturbation of the differential operator and material coefficients and derive the corresponding topological derivative. Finally, we demonstrate how the topological derivative, together with a level set method on the surface, can be used to numerically solve the topology optimization problem.
SIAM JOURNAL ON CONTROL AND OPTIMIZATION
(2022)
Article
Mechanics
Jie Gao, Lin Wang, Mi Xiao, Liang Gao, Peigen Li
Summary: This study focuses on developing an effective and efficient computational design framework for auxetic composites with three materials using Isogeometric Topology Optimization (ITO) method, where a tri-material topology representation model is constructed by non-uniform rational B-splines (NURBS) to effectively represent microstructural topology. The numerical examples presented in the study demonstrate a series of novel and interesting auxetic microarchitectures with re-entrant or chiral deformation mechanisms. The research contributes to the development of a platform that enables a scientific design of auxetic composites without heavily relying on human intuition.
COMPOSITE STRUCTURES
(2021)
Article
Computer Science, Software Engineering
Hassan A. Jahangiry, Majid Gholhaki, H. Naderpour, S. Mehdi Tavakkoli
Summary: This paper addresses geometrically nonlinear topology optimization using IsoGeometric Analysis (IGA) and Level Set Method (LSM) under plane stress assumptions. The proposed method demonstrates its ability to obtain stable and manufacturable design layouts.
COMPUTER-AIDED DESIGN
(2022)
Article
Computer Science, Interdisciplinary Applications
Samuel Amstutz
Summary: This paper provides a self-contained introduction to the mathematical aspects of the topological derivative, with full justifications given on simple model problems using a modern approach. Closed expressions of topological derivatives are obtained and commented, covering several cases in a unified and didactic presentation. Some elements of proof are novel.
ENGINEERING COMPUTATIONS
(2022)
Article
Engineering, Multidisciplinary
Fuhang Jiang, Leilei Chen, Jie Wang, Xiaofei Miao, Haibo Chen
Summary: A new topology optimization approach is proposed in this paper, which is based on isogeometric boundary element method and piecewise constant level set method, for designing the distribution of sound absorbing materials on structural surfaces. The proposed approach demonstrates accuracy, efficiency, and applicability in engineering design.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2022)
Article
Mechanics
Yaguang Wang, Handong Yang, Zhan Kang
Summary: The paper presents a new method based on the velocity field level set method that incorporates the concept of topological derivatives to enable automatic nucleation of interior holes. This method allows for direct changes to the structural topology during the boundary evolution and accelerates the topological and shape evolution during the optimization process.
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
(2022)
Article
Computer Science, Interdisciplinary Applications
Ali Azari Nejat, Alexander Held, Niklas Trekel, Robert Seifried
Summary: This study proposes an efficient and stable topology optimization algorithm for slender structures by modifying the pseudo-time step size and Lagrange multiplier to replace unacceptable designs, adjusting the normal velocity formulation to avoid instabilities, and adding filtering-like adaptation terms to achieve smoother optimization convergence.
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
(2022)
Article
Mechanics
Jiantao Bai, Wenjie Zuo
Summary: This article proposes a level set topology optimization method to design coated structures with multiple infill materials. The method constructs a multi-material interpolation model by combining multiple level set functions and derives shape derivatives for the multi-material optimization model of the coated structures for the first time.
COMPOSITE STRUCTURES
(2022)
Article
Computer Science, Interdisciplinary Applications
Rolando Yera, Luisina Forzani, Carlos Gustavo Mendez, Alfredo E. Huespe
Summary: This work introduces a topology optimization methodology for designing microarchitectures of phononic crystals, aiming to obtain microstructures with bandgaps between specified frequency bands and broaden the frequency range of these bandgaps. The optimization algorithm utilizes the concepts of level-set function and topological derivative to achieve adequate phononic crystal topologies, with emphasis on validating the analytical expressions of the topological derivative.
ENGINEERING COMPUTATIONS
(2022)
Article
Mechanics
Ying Zhou, Hao Li, Xiaopeng Li, Liang Gao
Summary: This paper presents a systematic optimization design method for multiphase auxetic metamaterials with different deformation mechanisms in both 2D and 3D scenarios. The method utilizes the parametric color level set (PCLS) to accurately describe the microstructures of different material phases and handles multiple material usage constraints efficiently. The design sensitivities are analyzed using the shape derivative theory, and the effective elasticity properties of multiphase composites are evaluated using the numerical homogenization method. Various symmetric conditions are imposed to induce re-entrant and chiral patterns in the metamaterials. The proposed method is demonstrated through numerical examples to tailor different types of multiphase auxetics.
COMPOSITE STRUCTURES
(2022)
Article
Computer Science, Artificial Intelligence
Sadjad Gharehbaghi, Hessam Yazdani, Mohsen Khatibinia
NEURAL COMPUTING & APPLICATIONS
(2020)
Article
Construction & Building Technology
Hamid Reza Chaboki, Mansour Ghalehnovi, Arash Karimipour, Jorge de Brito, Mohsen Khatibinia
CONSTRUCTION AND BUILDING MATERIALS
(2019)
Article
Engineering, Civil
Mohsen Khatibinia, Mehdi Jalaipour, Sadjad Gharehbaghi
ENGINEERING STRUCTURES
(2019)
Article
Engineering, Geological
H. Jarrahi, A. Asadi, M. Khatibinia, S. Etedali, A. Samadi
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2020)
Article
Engineering, Civil
H. Jarrahi, A. Asadi, M. Khatibinia, S. Etedali, S. Paknehad
Summary: This study investigates the effects of soil-structure interaction on the seismic performance of steel moment-resisting frames equipped with optimal rotational friction dampers. The findings show that SSI significantly influences the seismic performance of the frames, but the optimal dampers effectively dissipate a significant amount of the seismic energy.
Article
Acoustics
Mohsen Khatibinia, Sadegh Akbari, Hessam Yazdani, Sadjad Gharehbaghi
Summary: This study presents an approach to designing tuned mass dampers (TMDs) by quantifying seismic damage as a representative of structural response. The design problem is formulated into an optimization framework, where the objective function is to minimize the maximum value of story damage and constraints ensure a uniform distribution of damage along the height of the structure. The approach is demonstrated by finding the optimum design of a TMD for a 10-story inelastic steel moment-resisting frame (SMRF) and showing its effectiveness in mitigating local damage, achieving a more uniform damage distribution, improving the balance of drifts and accelerations, and reducing the seismic fragility of the SMRF.
JOURNAL OF VIBRATION AND CONTROL
(2023)
Article
Engineering, Civil
Mohammad Reza Shayesteh Bilondi, Mohsen Khatibinia, Mona Najafi
Summary: This study presents the optimal design of a multiple tuned mass damper (MTMD) system for suppressing seismic responses. The MTMD system's optimal design is formulated as an optimization problem with a single objective function, aiming to find the optimal parameters for a specified mass ratio. Two different objective functions, the root mean square of drifts and the cumulative hysteretic energy, are selected and minimized. The optimized MTMD system proves to be more effective in reducing the seismic responses of the structure compared to the optimized single tuned mass damper (TMD). Furthermore, the optimized MTMD system maintains its effectiveness beyond a certain number of TMD units and performs better than the optimized single TMD under real earthquake conditions.
IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY-TRANSACTIONS OF CIVIL ENGINEERING
(2023)
Article
Engineering, Civil
Saman Saadatfar, Fereshteh Emami, Mohsen Khatibinia, Hussein Eliasi
Summary: This study focuses on the design of an adaptive sliding sector controller (ASSC) to mitigate the seismic responses of an 11-story shear building under earthquake excitations. The ASSC technique, based on the hyper-surface of the sliding mode, is able to consider the uncertainty of system parameters. The performance of the ASSC strategy is evaluated under various earthquake excitations and compared to other control techniques, demonstrating its robustness and ability in reducing structural responses.
Article
Construction & Building Technology
Saman Saadatfar, Fereshteh Emami, Mohsen Khatibinia, Hussein Eliasi
Summary: This study proposes an effective seismic protection method by optimizing the design of a sliding sector control for an 11-story shear building structure equipped with an active tuned mass damper (ATMD). Comparative analysis with various control techniques confirms the efficiency and robustness of the proposed method.
STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS
(2023)
Retraction
Construction & Building Technology
Hamid Reza Chaboki, Mansour Ghalehnovi, Arash Karimipour, Jorge de Brito, Mohsen Khatibinia
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Civil
Hussein Eliasi, Hessam Yazdani, Mohsen Khatibinia, Mehdi Mahmoudi
Summary: The study presents a technique for the optimum design of a sliding mode controller (SMC) for ATMD-equipped structures subjected to earthquakes, and the optimized SMC outperforms PID and LQR, exhibiting performance comparable to that of FLC in reducing displacements.
STRUCTURAL ENGINEERING AND MECHANICS
(2022)
Article
Engineering, Civil
Mohsen Khatibinia, Aghdas Ahrari, Sadjad Gharehbaghi, Seyyed Reza Sarafrazi
Summary: This study aims to find the optimum shape of shear panel damper (SPD) subjected to cyclic loading by considering two different objective functions. By using a hybrid computational approach, the optimization procedure led to significant improvement in low cycle fatigue performance and accelerated the finding of optimum solutions.
SMART STRUCTURES AND SYSTEMS
(2021)
Article
Engineering, Multidisciplinary
S. Shahbazi, M. Khatibinia, I. Mansouri, J. W. Hu
Article
Multidisciplinary Sciences
Mohsen Khatibinia, Saeed Hosseinaei, Seyyed Reza Sarafrazi
SN APPLIED SCIENCES
(2019)
Article
Engineering, Civil
Alireza Farzampour, Mohsen Khatibinia, Iman Mansouri
INGEGNERIA SISMICA
(2019)
