Advances in Engineering Software最新文献

{"title":"Rigid-flexible coupling dynamic modeling and adaptive intelligent composite control for a novel redundantly actuated flexible parallel robot","authors":"Dong Liang ,&nbsp;Manjun Cui ,&nbsp;Shiyou Li ,&nbsp;Boyan Chang ,&nbsp;Zhen Wang ,&nbsp;Junpeng Zhang","doi":"10.1016/j.advengsoft.2025.104048","DOIUrl":"10.1016/j.advengsoft.2025.104048","url":null,"abstract":"<div><div>Due to complex nonlinear closed-loop constraints and structural flexibility, the dynamic modeling and control issue on flexible parallel robots is much more challenging compared to serial counterparts. Oriented to the demand of the high-end manufacturing field, this paper proposes a novel lightweight redundant parallel robot with cross layout of guide rail. Based on assumed mode discretization and Kane’s formulation, a general rigid-flexible coupling dynamic model of arbitrary branch incorporating <em>n</em>-order modes is derived. Leveraging modular ideology, the complete rigid-flexible coupling dynamic model of the system is established combining with nonlinear constraint equations, which is solved by the Runge-Kutta algorithm, modal truncation and forward dynamics methodology. The dynamic response comparison results between the redundant parallel robot and the non-redundant parallel robot reveal that the redundant actuation can suppress the elastic vibration. The rigid-flexible coupling dynamic model is then validated by a physical simulation model developed through the MATLAB/Simscape® platform using the finite segment approach. The electromechanical coupling dynamic model is further formulated by integrating the rigid-flexible coupling dynamic model with the permanent magnet synchronous motor and smart material. An adaptive intelligent composite control strategy is proposed to achieve trajectory tracking and vibration suppression. The comparison results with the other three control strategies demonstrate that the adaptive intelligent composite control strategy has superior control performance, exhibiting potential application prospects.</div></div>","PeriodicalId":50866,"journal":{"name":"Advances in Engineering Software","volume":"212 ","pages":"Article 104048"},"PeriodicalIF":5.7,"publicationDate":"2025-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145467796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A physics-informed machine learning computational framework for solving Mohr-Coulomb plasticity in geomechanics","authors":"Ran Yuan ,&nbsp;Xi-Long Huang ,&nbsp;Yong Fang ,&nbsp;Kiyonobu Kasama ,&nbsp;Yin Cheng ,&nbsp;Yi He","doi":"10.1016/j.advengsoft.2025.104061","DOIUrl":"10.1016/j.advengsoft.2025.104061","url":null,"abstract":"<div><div>This paper develops a Physics-Informed Neural Network (PINN) framework for solving Mohr-Coulomb (M-C) plasticity in geomechanics, and the plane strain layered perforated soils subjected to surface compression pressure are employed to validate the PINN solutions, through comparisons with parallel numerical experiments conducted in OptumG2. To incorporate the physical information for the elasto-plastic problem into neural networks (NNs), two modified multi-objective loss functions, respectively known as the collocation loss function and the Least Squares Weighted Residual (LSWR) loss function, are constructed through coarse data-driven information and physical constrains, consisting of M-C constitutive relations, associated/non-associated flow rules, Karush-Kuhn-Tucker (KKT) conditions, equilibrium conditions, and boundary conditions. The total loss function incorporates terms obtained from Finite Element Method (FEM) solutions for a range of elastoplastic field variables, i.e., stress and displacement, to inform the physical knowledge fitting. By employing several independently operating and densely connected artificial neural networks (ANNs), the PINN framework achieves the M-C plastic solutions by minimizing the designed total loss functions. Furthermore, influences of sample size, sampling strategy, and the loss function, on performances of the proposed PINN framework, are investigated for parametric analysis. In all cases, the PINN predictions were compared with finite element solutions at 145,023 mesh points, showing that over 90% of points had relative errors within 10%. The proposed PINN model is effective for data-scarce geotechnical problems, though its performance in regions with significant rates of change in physical quantity still requires further improvement.</div></div>","PeriodicalId":50866,"journal":{"name":"Advances in Engineering Software","volume":"212 ","pages":"Article 104061"},"PeriodicalIF":5.7,"publicationDate":"2025-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145468230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical boundary treatment in meshfree collocation for lid-driven cavity flow in stream function-vorticity form","authors":"Judy P. Yang,&nbsp;Yu-Hui Kao","doi":"10.1016/j.advengsoft.2025.104062","DOIUrl":"10.1016/j.advengsoft.2025.104062","url":null,"abstract":"<div><div>A nonlinear collocation method incorporating numerical boundary treatment is developed to solve lid-driven cavity flow problems governed by the Navier-Stokes equations in the stream function-vorticity form. In contrast to approaches that rely solely on the vorticity formulation, the present method avoids the computational challenges associated with evaluating fourth-order derivatives of reproducing kernel shape functions. To address the difficulties posed by non-physical vorticity boundary conditions, a higher-order finite difference-based numerical boundary scheme is introduced, in which Neumann boundary conditions for the stream function are implicitly enforced. The effectiveness and accuracy of the method are validated through a series of benchmark investigations, demonstrating its robustness and capability to handle a wide range of Reynolds numbers in lid-driven cavity flow problems.</div></div>","PeriodicalId":50866,"journal":{"name":"Advances in Engineering Software","volume":"212 ","pages":"Article 104062"},"PeriodicalIF":5.7,"publicationDate":"2025-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145468232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimal local truncation error method for 3-D elastodynamics interface problems on unfitted Cartesian meshes","authors":"A. Idesman,&nbsp;W. Ajwad,&nbsp;M. Mobin","doi":"10.1016/j.advengsoft.2025.104049","DOIUrl":"10.1016/j.advengsoft.2025.104049","url":null,"abstract":"<div><div>This study expands the optimal local truncation error method (OLTEM) with unfitted Cartesian meshes, designed for 2-D elastodynamics with interfaces (wave propagation and structural dynamics), to the general 3-D case and non-homogeneous interface conditions. The technique employs compact 27-point stencils, similar to those used in linear finite elements, while avoiding the introduction of additional unknowns at material interfaces. Importantly, the global semi-discrete equations retain a similar structure for homogeneous and heterogeneous materials. OLTEM with the diagonal mass matrix, suitable for explicit time-integration schemes, represents a subset of the broader formulation using the non-diagonal mass matrix.</div><div>A significant innovation in this work is a new 3-D post-processing procedure for stress calculations. It improves accuracy by incorporating accelerations and the governing elastodynamics equations into the analysis. Like the primary computations, this post-processing technique utilizes compact 27-point stencils. The new post-processing procedure outperforms traditional methods that depend solely on displacements.</div><div>OLTEM with unfitted Cartesian meshes shows superior accuracy compared to linear finite elements with equivalent stencils and conformal meshes, while requiring significantly fewer degrees of freedom (DOF). For instance, at an accuracy of 0.1% for the displacements, OLTEM with the non-diagonal mass matrix reduces the number of DOF by more than <span><math><mrow><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mn>4</mn></mrow></msup></mrow></math></span> times; at an accuracy of 0.1% for the stresses, OLTEM with the new post-processing procedure reduces the number of DOF about <span><math><mrow><mn>2</mn><mo>×</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mn>6</mn></mrow></msup></mrow></math></span> times compared to linear finite elements. OLTEM also provides increased computational efficiency compared to high-order finite elements, despite their wider stencils and conformal meshes.</div></div>","PeriodicalId":50866,"journal":{"name":"Advances in Engineering Software","volume":"212 ","pages":"Article 104049"},"PeriodicalIF":5.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145419536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An efficient multiscale coupling method for simulations of reactor-scale chemical vapor deposition with microstructural features","authors":"Taegeun Kim ,&nbsp;Hyoungsoo Ko ,&nbsp;Jaewon Jang ,&nbsp;Sejin Kim ,&nbsp;Sunyoung Park ,&nbsp;Jae Myung Choe ,&nbsp;Young-gu Kim ,&nbsp;Dae Sin Kim ,&nbsp;Sangseung Lee ,&nbsp;Donghyun You","doi":"10.1016/j.advengsoft.2025.104051","DOIUrl":"10.1016/j.advengsoft.2025.104051","url":null,"abstract":"<div><div>An efficient multiscale coupling method is proposed for simulations of reactor-scale chemical vapor deposition (CVD) with microstructural features. Reactor-scale and microstructure-resolved feature-scale models are coupled through an effective reaction rate formalism, enabling high-resolution deposition simulations while significantly reducing computational cost. A parameterized microstructural model is introduced, in which the relationship between the effective reaction rate and local species consumption rates in the reactor-scale model is directly mapped using precomputed Monte Carlo simulation data. This eliminates the need for iterative calculations or direct numerical simulations of the surface reaction across all the discretized grid points on the wafer, ensuring predictive accuracy while enhancing computational efficiency. Furthermore, an adaptive time-stepping method is developed, dynamically adjusting the time-step size for the feature-scale model based on variations in the effective reaction rate. Through this approach, simulation time is reduced by more than one-third compared to conventional fixed time-step methods, while preserving the accuracy of the effective reaction rate model. The proposed method enables practical and scalable multiscale CVD simulations applicable to industrial reactor design and process optimization, establishing a computationally efficient strategy for integrating reactor-scale and microstructure-resolved feature-scale models.</div></div>","PeriodicalId":50866,"journal":{"name":"Advances in Engineering Software","volume":"212 ","pages":"Article 104051"},"PeriodicalIF":5.7,"publicationDate":"2025-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145419535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic modeling and vibration analysis for functionally graded graphene platelet reinforced porous composite coupled conical-cylindrical-conical shells with annular plates","authors":"Peng Zuo ,&nbsp;Zhao Du ,&nbsp;Xianjie Shi ,&nbsp;Huiyong Feng ,&nbsp;Zhengyang Gao ,&nbsp;Bing Hu","doi":"10.1016/j.advengsoft.2025.104060","DOIUrl":"10.1016/j.advengsoft.2025.104060","url":null,"abstract":"<div><div>This study proposed a dynamic analysis model to systematically investigate the free vibration and stationary random vibration problems of functionally graded graphene platelet reinforced porous composite (FG-GPLRPC) coupled conical-cylindrical-conical shells with annular plates under stationary random excitation. Based on the closed-cell theory, the effective material properties with respect to FG-GPLRPC are characterized using the Halpin–Tsai micromechanics model combined with rule of mixture. Also, the artificial spring approach is adopted to describe different boundary restraints and coupling conditions that existed in the model. Within the shell theoretical framework of the first-order shear deformation theory (FSDT), the dynamic model for analyzing the free vibration and random vibration responses of the studied FG-GPLRPC coupled structures is established based on the Rayleigh-Ritz method. The spectro-geometric method (SGM) and pseudo-excitation method (PEM) are employed to calculate the vibration response results of the FG-GPLRPC coupled structures. The validity of the presented model is verified through implementing several numerical cases associated with the comparative analysis of free vibration and random vibration response results. Furthermore, some physical mechanisms regarding the influences of porosity coefficient, weight fraction, and the length of cylindrical shell, etc., on the model frequencies and random response behaviors of the FG-GPLRPC coupled structures are revealed.</div></div>","PeriodicalId":50866,"journal":{"name":"Advances in Engineering Software","volume":"212 ","pages":"Article 104060"},"PeriodicalIF":5.7,"publicationDate":"2025-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145419534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A real-time dynamic simulation platform for multi-DOF rigid body systems based on a novel explicit modelling method","authors":"Feifei Chen ,&nbsp;Xiaoting Rui ,&nbsp;Hehua Ju ,&nbsp;Kaimeng Wang","doi":"10.1016/j.advengsoft.2025.104047","DOIUrl":"10.1016/j.advengsoft.2025.104047","url":null,"abstract":"<div><div>Dynamic simulation is critical for the design and control of complex multi-DOF rigid body systems. Existing general-purpose dynamics software often relies on pre-built toolkits or open source libraries, which provide versatile functions but face challenges such as functional constraints and difficulty in error tracking. This study presents a self-developed, modular simulation platform based on an explicit joint space canonical dynamics formulation. The proposed approach extends the explicit dynamics theory by exploiting its block matrix structure: rotational and prismatic joints are classified, and the joint space mass matrix and bias force vector are assembled explicitly at the block level, enabling parallel computation of only half of the symmetric matrix, thus allowing real-time performance for multi-DOF systems. The entire numerical pipeline from topology initialization to forward and inverse dynamics solving is transparent, lightweight, and implemented in C++, ensuring full controllability and solver traceability. The platform demonstrates real-time simulation in millisecond level for a 6-DOF robotic arm, a 25-DOF Mars rover, and a 48-DOF multi-satellite system on standard CPUs, validating its accuracy, stability, and engineering applicability. This work highlights a way from traditional recursive solvers to an explicit dynamics framework for robotic and aerospace systems.</div></div>","PeriodicalId":50866,"journal":{"name":"Advances in Engineering Software","volume":"212 ","pages":"Article 104047"},"PeriodicalIF":5.7,"publicationDate":"2025-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145365679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stress intensity factor evaluation for non-planar cracks using virtual grid stress recovery (VGSR) and interaction integral methods","authors":"Nastaran Movahedi,&nbsp;Jongyeop Kim,&nbsp;Kyoungsoo Park","doi":"10.1016/j.advengsoft.2025.104042","DOIUrl":"10.1016/j.advengsoft.2025.104042","url":null,"abstract":"<div><div>This study proposes a straightforward method for computation of stress intensity factors (SIFs) for three-dimensional cracks featuring curved crack fronts and curved crack surfaces, without concerning the mesh topology around a crack tip. The key idea is to utilize a virtual grid-based stress recovery (VGSR) method on arbitrary nonplanar crack geometries along with the interaction energy integral to extract SIFs correspond to different modes. Since the VGSR technique reduces errors related to numerical differentiation and integral domain, it provides accurate computation of SIFs even with arbitrary unstructured meshes. Validation against benchmark problems shows excellent agreement with analytical solutions, highlighting the efficacy of this conjugated approach for precise SIF evaluation. Computational results demonstrate the convergence to analytical solutions while effectively reducing the pointwise oscillations of SIFs under mesh refinement. Additionally, parametric studies are comprehensively performed concerning the characteristics associated with virtual grid domain size, virtual grid element size, finite element sizes, and number of numerical integration points.</div></div>","PeriodicalId":50866,"journal":{"name":"Advances in Engineering Software","volume":"212 ","pages":"Article 104042"},"PeriodicalIF":5.7,"publicationDate":"2025-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145340732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A dual-stage combined displacement prediction model for concrete dam based on adaptive time series decomposition noise reduction and residual chaotic feature separation","authors":"Yu Gu ,&nbsp;Zhiping Wen ,&nbsp;Huaizhi Su ,&nbsp;Zheng Fang","doi":"10.1016/j.advengsoft.2025.104045","DOIUrl":"10.1016/j.advengsoft.2025.104045","url":null,"abstract":"<div><div>High-precision analysis and prediction of dam displacement is a crucial strategy to grasp the working attitude of dams and diagnose dam anomalies. However, the existing models often fail to accurately identify the interference noise existing in the form of short-frequency and small-fluctuations, resulting in the masking of the true deformation features. Meanwhile, existing studies often focus on one-stage prediction models, discarding the rich and valuable information contained in the residual sequence. Furthermore, the existing dual-stage models often fail to deeply consider the chaotic characteristics existing in the residuals. Therefore, this paper proposes a dual-stage combined displacement prediction model for concrete dam identifying the displacement sequence interference noise and considering the chaotic characteristics of the residual sequence. Firstly, the adaptive noise complete empirical mode decomposition, the improved sparrow search algorithm and the threshold evaluation index are combined to adaptively achieve the optimal decomposition noise reduction and retain the effective deformation features. Secondly, a gradient boosting tree is utilized to fit the effective component and combine it with the processed noise component to build a high-quality residual sequence that is rich in information. Thirdly, the residual sequence is decomposed into intrinsic mode functions with different temporal characteristics by utilizing the optimized variational mode decomposition. Finally, construct a chaotic time series based on chaos theory. Taking the sample entropy as the basis of judgement, for high-frequency components, the gradient boosting tree algorithm is utilized to capture their dynamic features. For low-frequency components, the depth-separable convolutional neural network, multi-head attention mechanism and bidirectional long short-term memory neural network are organically combined to comprehensively learn the deformation features. Case analysis shows that the RMSE of the model proposed in this paper in the measurement point PL11–5 sequence has reached an astonishing 0.0794, and the maximum improvement degree compared with the control model has reached 79.35 %. The results show that this model obtains strong generalization ability and high robustness, and can provide reference for dam safety monitoring.</div></div>","PeriodicalId":50866,"journal":{"name":"Advances in Engineering Software","volume":"211 ","pages":"Article 104045"},"PeriodicalIF":5.7,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145321137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"HFJOINT: A high-fidelity numerical modeling tool for stress concentration factor analysis of welded tubular joints","authors":"Songhan Zhang ,&nbsp;Wim De Waele ,&nbsp;Kris Hectors","doi":"10.1016/j.advengsoft.2025.104046","DOIUrl":"10.1016/j.advengsoft.2025.104046","url":null,"abstract":"<div><div>Assessing the fatigue performance of welded tubular joints is crucial to the safety and durability of their host structures. Fast-computing beam-element models are insufficient to accurately capture local stress concentrations at the intersection region, leading to inaccurate lifetime predictions. In this work, a high-fidelity numerical modeling tool, HFJOINT, is developed for stress concentration analysis of welded tubular joints, following a user-friendly process. The workflow begins with the creation of an elementary T/Y-joint using quadratic hexahedron elements, where the weld geometry is generated in accordance with the American Welding Society (AWS) standard. The chord and brace are divided into several regions allowing for an entirely structured mesh. The geometric transformations of multiple elementary joints enable creating more complex joints. After evaluating the stiffness matrix, the beam-element forces are converted to external tractions, and are transformed into solid-element nodal forces via Gaussian integral. The boundary conditions are defined from the geometric constraints formulated by the Lagrange’s equation of the second kind. Based on the nodal displacements, the postprocessing module evaluates the local stress at any point. Using linear extrapolation, the hot-spot structural stress and the stress concentration factors (SCFs) along the weld circumference are computed. The workflow has a computational complexity of <span><math><mrow><mi>O</mi><mrow><mo>(</mo><msup><mrow><mi>N</mi></mrow><mrow><mn>1</mn><mo>.</mo><mn>89</mn></mrow></msup><mo>)</mo></mrow></mrow></math></span>. The mesh convergence shows that the relative changes are below 2% when refining the weld circumference from 64 to 96 segments. The tool is verified against the SCFs of benchmark T-, K- and X- joint models, showing its potential for fatigue analysis of welded tubular joints in broad applications.</div></div>","PeriodicalId":50866,"journal":{"name":"Advances in Engineering Software","volume":"211 ","pages":"Article 104046"},"PeriodicalIF":5.7,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145321136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}