Article
Engineering, Marine
Luka Grubisic, Domagoj Lacmanovic, Marin Palaversa, Pero Prebeg, Josip Tambaca
Summary: We present an algorithm for the fully automatic generation of a class-compliant mesh for ship structural analysis. The algorithm consists of automatic geometry refinement and a preconditioned Delaunay frontal quad dominant mesh generator. The main contribution of the paper is the automatic geometry refinement algorithm and the virtual stiffener procedure. The algorithm is implemented in Python using the open-source Gmsh system and the Open CASCADE kernel.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Computer Science, Interdisciplinary Applications
Junbin Huang, Klaus-Jurgen Bathe
Summary: Two novel finite element schemes were proposed to reduce meshing effort in practical finite element analysis. The first scheme combines advantages of meshless and traditional finite element methods, while the second scheme allows individual meshes to overlap freely. Both schemes aim to achieve effective and accurate numerical solutions.
COMPUTERS & STRUCTURES
(2021)
Article
Engineering, Multidisciplinary
Bhagyashree Prabhune, Krishnan Suresh
Summary: The finite element method requires tangle-free elements and convex quadrilateral and hexahedral elements. However, generating high-quality tangle-free meshes, especially 3D hexahedral meshes, is challenging. The tangled finite element method (TFEM) was proposed to handle concave quadrilateral elements but is computationally expensive and complex. Here, they present a computationally efficient isoparametric-TFEM (i-TFEM) framework for inverted quadrilateral and hexahedral elements, which is simple, efficient, and accurate with optimal convergence rate.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Computer Science, Software Engineering
Xiaosong Zhu, Youyuan Wang
Summary: In this paper, a new fully automatic pure hexahedron mesh generation technique is presented for an arbitrary 2D/3D geometric domain. Additionally, a polyhedral smoothed finite element method is proposed for efficient numerical simulation. Several demonstration examples are provided to verify the accuracy of the proposed methods.
COMPUTER-AIDED DESIGN
(2022)
Article
Engineering, Multidisciplinary
Mohamad Mohmadsalehi, Soheil Soghrati
Summary: In this manuscript, an algorithm called conforming to interface structured adaptive mesh refinement (CISAMR) is expanded for modeling complex 2D crack growth problems involving contact/friction and multiple cracks interaction. The algorithm transforms a structured mesh into a conforming mesh without iterations, allowing minimal changes to the underlying mesh structure during the crack geometry evolution. The algorithm achieves accurate approximation of the energy release rate and predicts new crack path by adaptively refining and updating the mesh structure near the crack tip. The high-quality mesh construction enables the use of an explicit dynamic solver to simulate the nonlinear response caused by contact forces along crack faces. The algorithm's accuracy and ability are verified through benchmark fracture problems and more complex problems involving interactions between multiple growing cracks and embedded heterogeneities in the domain.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2022)
Article
Computer Science, Interdisciplinary Applications
Sungkwon Lee, Klaus-Jurgen Bathe
Summary: This study introduces a new development of overlapping finite elements, enhancing the evaluation of element matrices and solution of governing equations with a novel ingredient. The new approach provides more generality and ease of use compared to meshless solution schemes, with applications in two-and three-dimensional solid analyses.
COMPUTERS & STRUCTURES
(2022)
Article
Computer Science, Interdisciplinary Applications
Bhagyashree Prabhune, Krishnan Suresh
Summary: This paper presents a method called isoparametric tangled finite element method (i-TFEM) to handle tangled meshes efficiently, making it applicable for real-world scenarios.
ENGINEERING WITH COMPUTERS
(2023)
Article
Engineering, Multidisciplinary
Teseo Schneider, Daniele Panozzo, Xianlian Zhou
Summary: The paper introduces a new posteriori method to generate high order curved meshes using a poly-spline isogeometric method, ensuring continuity and smoothness between elements. Fitting algorithms adjust control points for final mesh interpolation or approximation, outperforming an elastic analogy based approach in terms of computational performance and overall mesh quality. The method can be extended for higher order IGA basis construction and smooth refinement important for high order physics simulations.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2021)
Article
Computer Science, Interdisciplinary Applications
Sungkwon Lee, Klaus-Juergen Bathe
Summary: The objective of this paper is to introduce two new overlapping finite elements and validate their properties and applications. These new elements can be utilized for meshing three-dimensional geometries, providing transitional capabilities, and compatibility with other elements.
COMPUTERS & STRUCTURES
(2022)
Article
Engineering, Multidisciplinary
Bhagyashree Prabhune, Saketh Sridhara, Krishnan Suresh
Summary: This article introduces a tangled finite element method (TFEM) for handling concave elements in four-node quadrilateral meshes. TFEM resolves the ambiguity of the field in the tangled region through careful definition and imposes an equality condition on the field at re-entrant nodes of the concave elements. The method has been shown to achieve accurate results and optimal convergence even over severely tangled meshes.
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
(2022)
Article
Mathematics, Applied
Nicola Ferro, Simona Perotto, Andrea Cangiani
Summary: A new recovery-based anisotropic error estimator and a metric-based mesh adaptation algorithm are proposed for discontinuous Galerkin finite element approximations of advection-diffusion problems. Numerical verification on various test cases demonstrates the effectiveness of the algorithm in capturing the directionalities of the solution in both steady and unsteady settings.
JOURNAL OF SCIENTIFIC COMPUTING
(2022)
Article
Engineering, Multidisciplinary
Yingjun Wang, Wei Zheng, Yongfeng Zheng, Daicong Da
Summary: This paper introduces an adaptive three level mesh method (ATMM) for structural topology optimization, aiming to reduce computational costs while maintaining accuracy. The ATMM divides elements into different levels and applies merging and dividing processes based on element status. The paper also proposes new schemes for nodal numbering and sensitivity filter to handle the incompatibility of adjacent elements in different levels.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Mathematics, Applied
Jothi Mani Thondiraj, Akhshaya Paranikumar, Devesh Tiwari, Daniel Paquet, Pritam Chakraborty
Summary: This study develops a diffused interface CPFEM framework, which reduces computational cost by using biased mesh and provides accurate results using non-conformal elements in the mesh size transiting regions. The accuracy of the framework is confirmed through comparisons with sharp and stepped interface results.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)
Review
Chemistry, Physical
Abdulnaser M. Alshoaibi, Yahya Ali Fageehi
Summary: This paper introduces a robust algorithm for generating high-quality triangular meshes to model complex two-dimensional crack growth problems. The algorithm incorporates adaptive refinement and mesh structure updates near the crack tip to accurately predict crack growth path based on stress intensity factors. Experimental and numerical results demonstrate the effectiveness of the algorithm in accurately predicting crack growth and facilitating reliable stress analysis.
Article
Computer Science, Interdisciplinary Applications
Kejie Fu, Jianjun Chen, Jie Li, Kaixin Yu, Jiangda He, Min Tang, Yao Zheng
Summary: This paper presents an automatic unstructured mesh generation approach for discretizing complex electronic packaging systems for finite element analysis. Various novel schemes are developed to automate the entire mesh generation pipeline and resolve common issues, such as geometrical defects, small necessary features, and predefined simulation properties on models.
ENGINEERING WITH COMPUTERS
(2023)
Article
Engineering, Electrical & Electronic
T. Henneron, A. Pierquin, S. Clenet
IEEE TRANSACTIONS ON MAGNETICS
(2020)
Article
Computer Science, Interdisciplinary Applications
Fabian Mueller, Lucas Crampen, Thomas Henneron, Stephane Clenet, Kay Hameyer
COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING
(2020)
Article
Materials Science, Multidisciplinary
Meryeme Toto Jamil, Abdelkader Benabou, Stephane Clenet, Sylvain Shihab, Laure Le Bellu Arbenz, Jean-Claude Mipo
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2020)
Article
Physics, Multidisciplinary
Mohamad El Youssef, Adrien Van Gorp, Stephane Clenet, Abdelkader Benabou, Pierre Faverolle, Jean-Claude Mipo
Article
Energy & Fuels
Reda El Bechari, Stephane Brisset, Stephane Clenet, Frederic Guyomarch, Jean Claude Mipo
Article
Materials Science, Multidisciplinary
Meryeme Toto Jamil, Abdelkader Benabou, Stephane Clenet, Sylvain Shihab, Laure Le Bellu Arbenz, Jean-Claude Mipo
Summary: This paper investigates the magnetic ageing of a bulk forged non-annealed magnetic core used in a claw pole synchronous machine. The study shows that the hysteresis losses and Vickers hardness are affected by magnetic ageing, primarily caused by carbide precipitates.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Energy & Fuels
Mohamad El Youssef, Stephane Clenet, Adrien Van Gorp, Abdelkader Benabou, Pierre Faverolle, Jean-Claude Mipo
Summary: In the process of electrical machine manufacturing, the forming process may impact the magnetic core performance. The article suggests reducing this impact by creating high localized heterogeneous deformations rather than low homogeneous deformation. Experimental measurements demonstrate that localized strain in a heterogeneous configuration has a smaller impact on global magnetic properties compared to a homogeneous configuration.
IEEE TRANSACTIONS ON ENERGY CONVERSION
(2021)
Article
Engineering, Electrical & Electronic
L. Montier, T. Henneron, S. Clenet, B. Goursaud
Summary: The study utilizes the POD approach on a linear finite element model of a squirrel cage induction machine, extracting snapshots from simulation tests to validate the reduced model's performance at different operating points.
IEEE TRANSACTIONS ON MAGNETICS
(2021)
Article
Engineering, Electrical & Electronic
S. Clenet, T. Henneron, J. Korecki
Summary: This article proposes a method to place sensors in an electrical machine to reconstruct the magnetic field distribution, using the empirical interpolation method combined with the Maxvol technique. The results show that accurate reconstruction of the field distribution is possible even when the sensors are located in the airgap of the rotating machine.
IEEE TRANSACTIONS ON MAGNETICS
(2021)
Article
Computer Science, Cybernetics
Diana Angelica Torres, Anis Kaci, Frederic Giraud, Christophe Giraud-Audine, Michel Amberg, Stephane Clenet, Betty Lemaire-Semail
Summary: This study established a model to estimate the acoustic finger force response of participants at different vibration amplitudes and proposed a linear relationship between PCA coefficients and friction reduction. The aim of the research is to create a customized amplitude reference calibration based on specific friction reduction levels to provide standardized tactile feedback for each user.
IEEE TRANSACTIONS ON HAPTICS
(2021)
Article
Engineering, Electrical & Electronic
QiWen Cheng, Jun Zou, Stphane Clenet
Summary: The proposed method for solving the ion-flow field problem adopts a novel and general numerical approach, focusing on the inverse problem perspective. By transforming the original boundary value problem into a regularized optimization problem and minimizing it in two parts using the alternating direction iterative method, the proposed method eliminates redundant iterations and contentious simplifications. Numerical experiments demonstrate superior performance compared to traditional methods, with results aligning more closely with physical laws. This new approach provides a comprehensive and rigorous analytical tool for studying ion-flow field problems.
IEEE TRANSACTIONS ON POWER DELIVERY
(2021)
Article
Engineering, Electrical & Electronic
T. Henneron, S. Clenet
Summary: This article introduces a surrogate model method based on POD and RBFs for solving nonlinear magnetostatic problems, which can efficiently compute FE solutions with less required solutions and error control.
IEEE TRANSACTIONS ON MAGNETICS
(2022)
Article
Engineering, Electrical & Electronic
Nnaemeka S. Ugwuanyi, Stephane Clenet, Xavier Kestelyn, Olivier Thomas
Summary: In this paper, the normal form (NF) method is employed to solve a 1-D nonlinear magnetodynamic problem. The results indicate that the cubic polynomial approximation adequately approximates the problem and the NF solution is valid for a certain range of magnetic field intensity.
IEEE TRANSACTIONS ON MAGNETICS
(2022)
Article
Engineering, Electrical & Electronic
Shingo Hiruma, Stephane Clenet, Hajime Igarashi, Thomas Henneron
Summary: The Cauer ladder network method allows for the construction of a reduced-based circuit model for analytical or numerical models. This article proposes an error estimator to provide guaranteed upper bounds for the truncation error resulting from the Cauer ladder network method.
IEEE TRANSACTIONS ON MAGNETICS
(2022)
Article
Computer Science, Interdisciplinary Applications
T. Delagnes, T. Henneron, S. Clenet, M. Fratila, J. P. Ducreux
Summary: Numerical simulation is widely used for product design optimization, but time-consuming. A-posteriori Model Order Reduction methods can reduce computational time effectively. The choice of the reduced basis is crucial for accuracy. The SVD method is commonly used but time-consuming, while the MESS method provides an alternative. This paper compares these methods and other clustering approaches in a complex realistic problem. The quality of reduced bases and their impact on field distributions and global quantities are analyzed. (c) 2023 International Association for Mathematics and Computers in Simulation (IMACS). Published by Elsevier B.V. All rights reserved.
MATHEMATICS AND COMPUTERS IN SIMULATION
(2023)
