4.7 Article

Multi-objective truss structural optimization considering natural frequencies of vibration and global stability

Journal

EXPERT SYSTEMS WITH APPLICATIONS
Volume 165, Issue -, Pages -

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eswa.2020.113777

Keywords

Multi-objective structural optimization; Differential evolution; Natural frequencies of vibration; Global stability

Funding

  1. CNPq [306186/2017-9]
  2. CAPES [001]

Ask authors/readers for more resources

This paper discusses a new multi-objective structural optimization problem involving conflicting objectives and constraints related to natural frequencies and global stability. Utilizing the modified Differential Evolution algorithm GDE3, the study explores various optimization problems including sizing, shape, and layout design variables.
Conflicting objectives such as minimizing weight and minimizing the maximum nodal displacement, with constraints on normal stresses in the bars, is a common multi-objective structural optimization problem widely found in the literature. This paper proposes multi-objective structural optimization problems with the combination of new conflicting objectives functions and constraints, such as the natural frequencies of vibration and the load factors concerning the global stability of the structure. The solution for these problems may be of great interest in the field of structural engineering, not yet discussed in the literature. The problems analyzed in this paper deal with both discrete and continuous sizing, shape, and layout design variables. The search algorithm adopted here is a modified version of the Differential Evolution called the Third Evolution Step Differential Evolution (GDE3). Several experiments are analyzed with their Pareto-fronts showing the non-dominated solutions. The solutions are defined after obtaining the Pareto curve, which is one of the most important steps and a task that may not be trivial for the Decision Maker. This paper involves a strategy that establishes criteria defining weights (importance) for each objective function and, through these values, enables comparison scenarios. The numerical experiments include plane and spatial benchmark trusses. (C) 2020 Elsevier Ltd. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Computer Science, Interdisciplinary Applications

Truss optimization with multiple frequency constraints and automatic member grouping

Jose P. G. Carvalho, Afonso C. C. Lemonge, Erica C. R. Carvalho, Patricia H. Hallak, Heder S. Bernardino

STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION (2018)

Article Engineering, Aerospace

Evaluation of low fidelity and CFD methods for the aerodynamic performance of a small propeller

Eric Vargas Loureiro, Nicolas Lima Oliveira, Patricia Habib Hallak, Flavia de Souza Bastos, Lucas Machado Rocha, Rafael Grande Pancini Delmonte, Afonso Celso de Castro Lemonge

Summary: The increasing use of unmanned aerial vehicles and micro air vehicles creates a strong demand for the accurate aerodynamic performance of small-diameters fixed-pitch propellers, which can be analyzed using both low-fidelity methods like blade element momentum theory (BEMT) and high-fidelity methods like computational fluid dynamics (CFD). This study aims to employ these methods to analyze an APC propeller, highlighting the relationship between analysis method choice and Reynolds number, as well as the performance differences at different advance ratio velocities.

AEROSPACE SCIENCE AND TECHNOLOGY (2021)

Article Engineering, Civil

Simultaneous sizing, shape, and layout optimization and automatic member grouping of dome structures

Jose P. G. Carvalho, Afonso C. C. Lemonge, Patricia H. Hallak, Denis E. C. Vargas

STRUCTURES (2020)

Article Thermodynamics

On the CN production through a spark-plug discharge in air-CO2 mixture

L. W. S. Crispim, F. C. Peters, J. Amorim, P. H. Hallak, M. Y. Ballester

Summary: A simulation study of cyanide production through electric discharge in a vehicular spark plug in dry air with typical outdoor CO2 levels is presented. The study uses a 2D theoretical and numerical framework, with simulations conducted at atmospheric pressure. The plasmo-chemical kinetics model includes 69 species and 710 collision processes, discussing principal pathways for cyanide formation and reporting spatial and temporal evolution of species of interest.

COMBUSTION AND FLAME (2021)

Article Computer Science, Interdisciplinary Applications

Multi-objective optimum design of truss structures using differential evolution algorithms

Jose Pedro G. Carvalho, Erica C. R. Carvalho, Denis E. C. Vargas, Patricia H. Hallak, Beatriz S. L. P. Lima, Afonso C. C. Lemonge

Summary: This paper discusses multi-objective structural optimization problems with various objective functions, including weight, natural frequencies of vibration, maximum nodal displacement, and global stability of the structure. Differential evolution algorithms are used for optimization on different types of trusses and ground-structure systems, with multi-criteria decision-making being applied to extract solutions.

COMPUTERS & STRUCTURES (2021)

Article Green & Sustainable Science & Technology

Design method and performance analysis of a hybrid-electric power-train applied in a 30-passenger aircraft

Manuel A. Rendon, Marcelo Assato, Vitor A. C. Martins, Patricia H. Hallak, Alexandre S. Altgott, Ricardo Graca, Zaire Landy, Nicolas Lima Oliveira, Grande Pancini Delmonte Rafael

Summary: This study focuses on developing design methods to transform existing aircraft propulsion systems into hybrid power and analyzing their performance. High fidelity models of the aircraft's components are created, and GasTurb is used to model the turboprop engines in both conventional and hybrid systems. MATLAB is then used to simulate steady state conditions and optimize the characteristics of the hybrid motor components.

JOURNAL OF CLEANER PRODUCTION (2022)

Review Computer Science, Artificial Intelligence

Solving multi-objective truss structural optimization problems considering natural frequencies of vibration and automatic member grouping

Erica C. R. Carvalho, Jose Pedro G. Carvalho, Heder S. Bernardino, Afonso C. C. Lemonge, Patricia H. Hallak, Denis E. C. Vargas

Summary: This paper investigates the conflicting objectives of minimizing the mass of a structure and maximizing its first natural frequency of vibration in structural design. The authors formulate and solve multi-objective structural optimization problems of trusses using various algorithms. The experiments demonstrate that the proposed methods achieve satisfactory results in optimizing truss structures.

EVOLUTIONARY INTELLIGENCE (2022)

Article Energy & Fuels

Multi-Objective Structural Optimization of a Composite Wind Turbine Blade Considering Natural Frequencies of Vibration and Global Stability

Lucas de Landa Couto, Nicolas Estanislau Moreira, Josue Yoshikazu de Oliveira Saito, Patricia Habib Hallak, Afonso Celso de Castro Lemonge

Summary: In this paper, a composite wind turbine blade is subjected to multi-objective structural optimization considering resonance and global stability. The NSGA-II algorithm is used to solve the optimization problems and non-dominated solutions are extracted. The study is expected to contribute to the multi-objective optimization and structural design of wind turbine blades.

ENERGIES (2023)

Article Engineering, Mechanical

Modeling the flutter phenomenon by CFD of rectangular profiles

Juliema Fronczak, Alexandre Miguel Silva Araujo, Gabriel Antonio Mendes das Flores, Lucas Lucinda de Sa, Alexandre Abrahao Cury, Patricia Habib Hallak

Summary: This paper presents a new approach to study wind-induced vibrations in structures, by combining structural dynamic systems with fluid mechanics. By analyzing the behavior of rectangular structures under static and dynamic conditions, satisfactory results were obtained.

JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING (2023)

Article Computer Science, Interdisciplinary Applications

Multi-objective structural optimization for the automatic member grouping of truss structures using evolutionary algorithms

Jose Pedro G. Carvalho, Denis E. C. Vargas, Breno P. Jacob, Beatriz S. L. P. Lima, Patricia H. Hallak, Afonso C. C. Lemonge

Summary: This paper formulates a multi-objective structural optimization problem and utilizes multiple evolutionary algorithms to solve it. By optimizing the grouping of structural members, the best truss structure can be found. After analyzing various benchmark problems, the study reveals the existence of competitive structural member configurations beyond symmetry-based groupings.

COMPUTERS & STRUCTURES (2024)

Article Engineering, Mechanical

Evaluation of numerical techniques for modeling flutter phenomenon into two geometries: the 1:4.9 rectangle and the Great Belt East Bridge in scale 1:7

Alexandre Miguel Silva Araujo, Juliema Fronczak, Gabriel Antonio Mendes das Flores, Lucas Lucinda de Sa, Alexandre Abrahao Cury, Patricia Habib Hallak

Summary: This study presents a methodology based on computational fluid dynamics to obtain flutter derivatives and critical flutter velocity. Two approaches were analyzed, with the first being more robust but computationally more expensive. The study was applied to different structures and validated with numerical and experimental studies. This research provides an assertive and pragmatic CFD methodology for obtaining critical flutter velocity on structures.

JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING (2023)

Review Computer Science, Artificial Intelligence

A comprehensive review of slope stability analysis based on artificial intelligence methods

Wei Gao, Shuangshuang Ge

Summary: This study provides a comprehensive review of slope stability research based on artificial intelligence methods, focusing on slope stability computation and evaluation. The review covers studies using quasi-physical intelligence methods, simulated evolutionary methods, swarm intelligence methods, hybrid intelligence methods, artificial neural network methods, vector machine methods, and other intelligence methods. The merits, demerits, and state-of-the-art research advancement of these studies are analyzed, and possible research directions for slope stability investigation based on artificial intelligence methods are suggested.

EXPERT SYSTEMS WITH APPLICATIONS (2024)

Article Computer Science, Artificial Intelligence

Machine learning approaches for lateral strength estimation in squat shear walls: A comparative study and practical implications

Khuong Le Nguyen, Hoa Thi Trinh, Saeed Banihashemi, Thong M. Pham

Summary: This study investigated the influence of input parameters on the shear strength of RC squat walls and found that ensemble learning models, particularly XGBoost, can effectively predict the shear strength. The axial load had a greater influence than reinforcement ratio, and longitudinal reinforcement had a more significant impact compared to horizontal and vertical reinforcement. The performance of XGBoost model outperforms traditional design models and reducing input features still yields reliable predictions.

EXPERT SYSTEMS WITH APPLICATIONS (2024)

Article Computer Science, Artificial Intelligence

DHESN: A deep hierarchical echo state network approach for algal bloom prediction

Bo Hu, Huiyan Zhang, Xiaoyi Wang, Li Wang, Jiping Xu, Qian Sun, Zhiyao Zhao, Lei Zhang

Summary: A deep hierarchical echo state network (DHESN) is proposed to address the limitations of shallow coupled structures. By using transfer entropy, candidate variables with strong causal relationships are selected and a hierarchical reservoir structure is established to improve prediction accuracy. Simulation results demonstrate that DHESN performs well in predicting algal bloom.

EXPERT SYSTEMS WITH APPLICATIONS (2024)

Article Computer Science, Artificial Intelligence

Learning high-dependence Bayesian network classifier with robust topology

Limin Wang, Lingling Li, Qilong Li, Kuo Li

Summary: This paper discusses the urgency of learning complex multivariate probability distributions due to the increase in data variability and quantity. It introduces a highly scalable classifier called TAN, which utilizes maximum weighted spanning tree (MWST) for graphical modeling. The paper theoretically proves the feasibility of extending one-dependence MWST to model high-dependence relationships and proposes a heuristic search strategy to improve the fitness of the extended topology to data. Experimental results demonstrate that this algorithm achieves a good bias-variance tradeoff and competitive classification performance compared to other high-dependence or ensemble learning algorithms.

EXPERT SYSTEMS WITH APPLICATIONS (2024)

Article Computer Science, Artificial Intelligence

Make a song curative: A spatio-temporal therapeutic music transfer model for anxiety reduction

Zhejing Hu, Gong Chen, Yan Liu, Xiao Ma, Nianhong Guan, Xiaoying Wang

Summary: Anxiety is a prevalent issue and music therapy has been found effective in reducing anxiety. To meet the diverse needs of individuals, a novel model called the spatio-temporal therapeutic music transfer model (StTMTM) is proposed.

EXPERT SYSTEMS WITH APPLICATIONS (2024)

Article Computer Science, Artificial Intelligence

A modified reverse-based analysis logic mining model with Weighted Random 2 Satisfiability logic in Discrete Hopfield Neural Network and multi-objective training of Modified Niched Genetic Algorithm

Nur Ezlin Zamri, Mohd. Asyraf Mansor, Mohd Shareduwan Mohd Kasihmuddin, Siti Syatirah Sidik, Alyaa Alway, Nurul Atiqah Romli, Yueling Guo, Siti Zulaikha Mohd Jamaludin

Summary: In this study, a hybrid logic mining model was proposed by combining the logic mining approach with the Modified Niche Genetic Algorithm. This model improves the generalizability and storage capacity of the retrieved induced logic. Various modifications were made to address other issues. Experimental results demonstrate that the proposed model outperforms baseline methods in terms of accuracy, precision, specificity, and correlation coefficient.

EXPERT SYSTEMS WITH APPLICATIONS (2024)

Article Computer Science, Artificial Intelligence

On taking advantage of opportunistic meta-knowledge to reduce configuration spaces for automated machine learning

David Jacob Kedziora, Tien-Dung Nguyen, Katarzyna Musial, Bogdan Gabrys

Summary: The paper addresses the problem of efficiently optimizing machine learning solutions by reducing the configuration space of ML pipelines and leveraging historical performance. The experiments conducted show that opportunistic/systematic meta-knowledge can improve ML outcomes, and configuration-space culling is optimal when balanced. The utility and impact of meta-knowledge depend on various factors and are crucial for generating informative meta-knowledge bases.

EXPERT SYSTEMS WITH APPLICATIONS (2024)

Article Computer Science, Artificial Intelligence

Optimal location for an EVPL and capacitors in grid for voltage profile and power loss: FHO-SNN approach

G. Sophia Jasmine, Rajasekaran Stanislaus, N. Manoj Kumar, Thangamuthu Logeswaran

Summary: In the context of a rapidly expanding electric vehicle market, this research investigates the ideal locations for EV charging stations and capacitors in power grids to enhance voltage stability and reduce power losses. A hybrid approach combining the Fire Hawk Optimizer and Spiking Neural Network is proposed, which shows promising results in improving system performance. The optimization approach has the potential to enhance the stability and efficiency of electric grids.

EXPERT SYSTEMS WITH APPLICATIONS (2024)

Article Computer Science, Artificial Intelligence

NLP-based approach for automated safety requirements information retrieval from project documents

Zhijiang Wu, Guofeng Ma

Summary: This study proposes a natural language processing-based framework for requirement retrieval and document association, which can help to mine and retrieve documents related to project managers' requirements. The framework analyzes the ontology relevance and emotional preference of requirements. The results show that the framework performs well in terms of iterations and threshold, and there is a significant matching between the retrieved documents and the requirements, which has significant managerial implications for construction safety management.

EXPERT SYSTEMS WITH APPLICATIONS (2024)

Article Computer Science, Artificial Intelligence

Dog nose-print recognition based on the shape and spatial features of scales

Yung-Kuan Chan, Chuen-Horng Lin, Yuan-Rong Ben, Ching-Lin Wang, Shu-Chun Yang, Meng-Hsiun Tsai, Shyr-Shen Yu

Summary: This study proposes a novel method for dog identification using nose-print recognition, which can be applied to controlling stray dogs, locating lost pets, and pet insurance verification. The method achieves high recognition accuracy through two-stage segmentation and feature extraction using a genetic algorithm.

EXPERT SYSTEMS WITH APPLICATIONS (2024)

Article Computer Science, Artificial Intelligence

Fostering supply chain resilience for omni-channel retailers: A two-phase approach for supplier selection and demand allocation under disruption risks

Shaohua Song, Elena Tappia, Guang Song, Xianliang Shi, T. C. E. Cheng

Summary: This study aims to optimize supplier selection and demand allocation decisions for omni-channel retailers in order to achieve supply chain resilience. It proposes a two-phase approach that takes into account various factors such as supplier evaluation and demand allocation.

EXPERT SYSTEMS WITH APPLICATIONS (2024)

Article Computer Science, Artificial Intelligence

Accelerating Benders decomposition approach for shared parking spaces allocation considering parking unpunctuality and no-shows

Jinyan Hu, Yanping Jiang

Summary: This paper examines the allocation problem of shared parking spaces considering parking unpunctuality and no-shows. It proposes an effective approach using sample average approximation (SAA) combined with an accelerating Benders decomposition (ABD) algorithm to solve the problem. The numerical experiments demonstrate the significance of supply-demand balance for the operation and user satisfaction of the shared parking system.

EXPERT SYSTEMS WITH APPLICATIONS (2024)

Review Computer Science, Artificial Intelligence

Financial fraud detection using graph neural networks: A systematic review

Soroor Motie, Bijan Raahemi

Summary: Financial fraud is a persistent problem in the finance industry, but Graph Neural Networks (GNNs) have emerged as a powerful tool for detecting fraudulent activities. This systematic review provides a comprehensive overview of the current state-of-the-art technologies in using GNNs for financial fraud detection, identifies gaps and limitations in existing research, and suggests potential directions for future research.

EXPERT SYSTEMS WITH APPLICATIONS (2024)

Review Computer Science, Artificial Intelligence

Occluded person re-identification with deep learning: A survey and perspectives

Enhao Ning, Changshuo Wang, Huang Zhang, Xin Ning, Prayag Tiwari

Summary: This review provides a detailed overview of occluded person re-identification methods and conducts a systematic analysis and comparison of existing deep learning-based approaches. It offers important theoretical and practical references for future research in the field.

EXPERT SYSTEMS WITH APPLICATIONS (2024)

Article Computer Science, Artificial Intelligence

A hierarchical attention detector for bearing surface defect detection

Jiajun Ma, Songyu Hu, Jianzhong Fu, Gui Chen

Summary: The article presents a novel visual hierarchical attention detector for multi-scale defect location and classification, utilizing texture, semantic, and instance features of defects through a hierarchical attention mechanism, achieving multi-scale defect detection in bearing images with complex backgrounds.

EXPERT SYSTEMS WITH APPLICATIONS (2024)