Computers & Structures最新文献_第3页

A hybrid finite element and radiative energy transfer method for predicting the vibrational energy distribution of coupled systems in the mid-frequency range 一种预测耦合系统中频振动能量分布的有限元与辐射能量传递混合方法

IF 4.8 2区工程技术

Computers & Structures Pub Date : 2025-09-01 DOI: 10.1016/j.compstruc.2025.107935

Chenghao Dai , Qiang Zhong , Ronghui Ning , Haibo Chen

{"title":"A hybrid finite element and radiative energy transfer method for predicting the vibrational energy distribution of coupled systems in the mid-frequency range","authors":"Chenghao Dai , Qiang Zhong , Ronghui Ning , Haibo Chen","doi":"10.1016/j.compstruc.2025.107935","DOIUrl":"10.1016/j.compstruc.2025.107935","url":null,"abstract":"<div><div>This study proposes a hybrid approach integrating the finite element method (FEM) and radiative energy transfer method (RETM) to predict the local energy characteristics of short-wavelength subsystems in mid-frequency coupled systems. Long-wavelength subsystems are modeled using FEM, and RETM governs short-wavelength components, where energy density originates from three contributions: incoherent rays emitted by deterministic boundaries, physical sources, and fictitious sources. Power transfer amongst RETM subsystems via FE interfaces is quantified using reciprocity relationships between direct field radiation and blocked reverberant forces. Local energy transfer coefficients characterize the interactions amongst fictitious sources across deterministic boundaries. Second-type Fredholm equations are formulated by balancing the outgoing fictitious source energy against the incident energy from physical sources, neighboring fictitious sources, and adjacent boundaries to determine the fictitious source intensities. The diffuse directional emissions from fictitious and point sources enhance boundary condition robustness. Numerical validations involving comparisons with Monte Carlo FE solutions demonstrate the effectiveness of hybrid FE-RETM. Results confirm its capability to accurately capture energy distribution patterns in short-wavelength subsystems across mid-frequency ranges and its ability to resolve the overlapping frequency limitations of wave-bearing and energy-based methods. The proposed methodology offers a systematic approach for mid-frequency analysis of coupled systems with mixed wavelength behaviors.</div></div>","PeriodicalId":50626,"journal":{"name":"Computers & Structures","volume":"317 ","pages":"Article 107935"},"PeriodicalIF":4.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144925117","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}

引用次数: 0

Pin-loaded joint contact in anisotropic viscoelastic plates via a semi-analytical method 基于半解析方法的各向异性粘弹性板的针载荷关节接触

IF 4.8 2区工程技术

Computers & Structures Pub Date : 2025-09-01 DOI: 10.1016/j.compstruc.2025.107940

Van Luan Nguyen , Trong Khanh Huy Nguyen , Nguyen Dinh Duc , Van Thuong Nguyen

{"title":"Pin-loaded joint contact in anisotropic viscoelastic plates via a semi-analytical method","authors":"Van Luan Nguyen , Trong Khanh Huy Nguyen , Nguyen Dinh Duc , Van Thuong Nguyen","doi":"10.1016/j.compstruc.2025.107940","DOIUrl":"10.1016/j.compstruc.2025.107940","url":null,"abstract":"<div><div>Fiber-reinforced polymer matrix composites are widely used in engineering structures, where pin/bolt-loaded joints are essential for assembly. These composites often exhibit anisotropic and viscoelastic behaviors, making the analysis of pin-loaded hole contact problems particularly challenging. This paper introduces a new semi-analytical method (SAM) for analyzing contact behaviors in anisotropic viscoelastic plates with pin-loaded holes. The method relies on surface Green’s functions, which are derived using a time-stepping approach for a viscoelastic plate subjected to a concentrated load on the hole boundary. These functions allow analytical computation of the influence matrices, which ensure both accuracy and efficiency in SAM. The method can be applied to various contact situations, including interference, transition, and loose fits. The method also accounts for frictionless and frictional contact surfaces. To examine the correctness and demonstrate the generality of the proposed SAM, numerical results are provided and compared with the results obtained by the available solution methods, such as BEM. After verification, parametric studies are implemented to examine the effects of several important parameters, such as pin size, applied force, friction coefficient, material anisotropy, Prony’s coefficients of stiffness constants, and relaxation time, on the contact behaviors of the hole in the anisotropic viscoelastic plate.</div></div>","PeriodicalId":50626,"journal":{"name":"Computers & Structures","volume":"317 ","pages":"Article 107940"},"PeriodicalIF":4.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144922948","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}

引用次数: 0

Mesh deformation and adaptive refinement for physical fields 物理场的网格变形和自适应细化

IF 4.8 2区工程技术

Computers & Structures Pub Date : 2025-08-30 DOI: 10.1016/j.compstruc.2025.107941

Haoyu Huang , Fei Yu , Xiaoyu Jiang , Yunyun Du , Junhe Xie , Jie Cao , Julin Shan , Haidong Zhang , Zhenqun Guan

{"title":"Mesh deformation and adaptive refinement for physical fields","authors":"Haoyu Huang , Fei Yu , Xiaoyu Jiang , Yunyun Du , Junhe Xie , Jie Cao , Julin Shan , Haidong Zhang , Zhenqun Guan","doi":"10.1016/j.compstruc.2025.107941","DOIUrl":"10.1016/j.compstruc.2025.107941","url":null,"abstract":"<div><div>Physical field simulations demand efficient mesh deformation and adaptive refinement methods. This paper proposes a systematical method tailored to the specific needs of simulations. Interpolation-based methods are preferred for large-scale mesh deformation due to computational efficiency. Improving the inverse distance weighted method by introducing auxiliary nodes using the sub-mesh. A node smoothing algorithm based on layered mesh is also devised to enhance mesh deformation ability. Optimizing the convergence criterion greatly reduces computation time.</div><div>To improve element quality after deformation and meet the requirement for iterative refinement of mesh in simulation, a mesh refinement method is proposed. To address challenges in inserting nodes into narrow spaces, a novel algorithm is developed, which integrates the boundary constraints with the longest-edge propagation path. The co-optimization of surface and tetrahedral meshes is achieved through an algorithm based on size-field and an improved surface priority insertion strategy. A boundary edge priority algorithm is proposed to preserve the fitness between mesh and geometry. Flow field examples demonstrate the method’s effectiveness in mesh deformation and the optimization of poor-quality elements. Electromagnetic simulation results show that, compared to commercial software, the method significantly reduces the number of elements after refinement while maintaining solver accuracy.</div></div>","PeriodicalId":50626,"journal":{"name":"Computers & Structures","volume":"317 ","pages":"Article 107941"},"PeriodicalIF":4.8,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144919910","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}

引用次数: 0

Robust topology optimization of continuous structures using the Bernstein approximation 基于Bernstein近似的连续结构鲁棒拓扑优化

IF 4.8 2区工程技术

Computers & Structures Pub Date : 2025-08-29 DOI: 10.1016/j.compstruc.2025.107939

Alfredo Canelas , Miguel Carrasco , Julio López

引用次数: 0

Probability density evolution method for structural reliability analysis: A parallel Bayesian active learning perspective 结构可靠度分析的概率密度演化方法：平行贝叶斯主动学习视角

IF 4.8 2区工程技术

Computers & Structures Pub Date : 2025-08-28 DOI: 10.1016/j.compstruc.2025.107936

Tong Zhou , Tong Guo , Jize Zhang

{"title":"Probability density evolution method for structural reliability analysis: A parallel Bayesian active learning perspective","authors":"Tong Zhou , Tong Guo , Jize Zhang","doi":"10.1016/j.compstruc.2025.107936","DOIUrl":"10.1016/j.compstruc.2025.107936","url":null,"abstract":"<div><div>While probability density evolution method (PDEM) paired with active learning shows strong promise for structural reliability analysis, its broader adoption is hindered by unresolved theoretical limitations and computational inefficiencies. In this work, we present the first attempt at casting a Bayesian inference perspective for evaluating failure probability in PDEM. First, it quantifies epistemic uncertainty through a posterior mean and a provable upper bound of variance (UBV) of failure probability, overcoming limitations of the traditional frequentist approaches. Then, three critical ingredients of parallel active learning paradigm are designed: (i) A multi-point learning function called the upper bound of variance reduction (UBVR) is analytically deduced to quantify the impact of adding <span><math><mi>k</mi><mo>(</mo><mo>≥</mo><mn>1</mn><mo>)</mo></math></span> new samples. (ii) Batch enrichment process is achieved via a principled stepwise maximization strategy of UBVR, eliminating the need for those goal-inconsistent batch selection strategies. (iii) A hybrid convergence criterion is defined by continuously monitoring the instantaneous value of UBV. The proposed method offers a comprehensive framework for fusing Bayesian inference of failure probability and parallel active learning in PDEM. It is tested on five examples and compared against several existing parallel active learning reliability methods. Results indicate that the proposed approach matches similar accuracy to state-of-the-art methods with great computational cost savings.</div></div>","PeriodicalId":50626,"journal":{"name":"Computers & Structures","volume":"317 ","pages":"Article 107936"},"PeriodicalIF":4.8,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913982","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}

引用次数: 0

Homogenization of flow in inflatable periodic structures with nonlinear effects 具有非线性效应的充气周期结构中流动的均匀化

IF 4.8 2区工程技术

Computers & Structures Pub Date : 2025-08-26 DOI: 10.1016/j.compstruc.2025.107933

E. Rohan, V. Lukeš

{"title":"Homogenization of flow in inflatable periodic structures with nonlinear effects","authors":"E. Rohan, V. Lukeš","doi":"10.1016/j.compstruc.2025.107933","DOIUrl":"10.1016/j.compstruc.2025.107933","url":null,"abstract":"<div><div>The paper presents a new type of weakly nonlinear two-scale model of inflatable periodic poroelastic structures saturated by Newtonian fluids. The periodic microstructures incorporate fluid inclusions connected to the fluid channels by admission and ejection valves represented by a 0D model. This induces a nonlinearity in the macroscopic Biot-type model, whereby the Darcy flow model governs the fluid transport due to the channels. Moreover, the fluid channels consist of compartments separated by semipermeable membranes inducing the pressure discontinuity. The homogenized model is derived under the small deformation assumption, however the equilibrium is considered in the Eulerian frame. Deformation-dependent homogenized coefficients of the incremental poroelasticity constitutive law and the permeability are approximated using the sensitivity analysis, to avoid coupled two-scale iterations. Numerical simulations illustrate the inflation process over time. Example of a bi-material cantilever demonstrates the inflation induced bending. The proposed two-scale model is intended to provide a computational tool for designing of porous metamaterials for fluid transport, or shape morphing with various potential applications.</div></div>","PeriodicalId":50626,"journal":{"name":"Computers & Structures","volume":"317 ","pages":"Article 107933"},"PeriodicalIF":4.8,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896411","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}

引用次数: 0

A finite volume scheme for the solution of discontinuous magnetic field distributions on non-orthogonal meshes 非正交网格上不连续磁场分布解的有限体积格式

IF 4.8 2区工程技术

Computers & Structures Pub Date : 2025-08-22 DOI: 10.1016/j.compstruc.2025.107915

Augusto Riedinger, Martín Saravia, José Ramírez

{"title":"A finite volume scheme for the solution of discontinuous magnetic field distributions on non-orthogonal meshes","authors":"Augusto Riedinger, Martín Saravia, José Ramírez","doi":"10.1016/j.compstruc.2025.107915","DOIUrl":"10.1016/j.compstruc.2025.107915","url":null,"abstract":"<div><div>We present a finite volume method for solving discontinuous magnetostatics on general non-orthogonal meshes. The proposed scheme captures field discontinuities across material interfaces by enforcing local conservation of the magnetic vector potential. Second-order spatial accuracy is achieved on highly skewed grids through the use of non-orthogonal correction schemes and gradient reconstruction techniques. A Block Gauss–Seidel iterative solver with under-relaxation is employed to ensure stable convergence even in strongly magnetized, high-permeability regions. A multi-region formulation guarantees conservative magnetic flux continuity at interfaces, eliminating the spurious flux leakage and field smearing that can plague conventional finite-element solutions. Verification against finite element solutions demonstrates that the method attains comparable accuracy while reducing computational cost. Grid Convergence Index studies indicate design-order (second-order) convergence in smooth-field regions. Furthermore, rigorous manufactured solution tests confirm near second-order convergence globally, validating the scheme’s theoretical order of accuracy across both homogeneous and discontinuous media. These results highlight the robustness, efficiency, and accuracy of the proposed framework. By synthesizing high-order finite volume discretization techniques, conservative interface coupling, and thorough verification practices, this work establishes FVM as a compelling, scalable alternative to classical FEM approaches for industrial-scale magnetostatic applications.</div></div>","PeriodicalId":50626,"journal":{"name":"Computers & Structures","volume":"317 ","pages":"Article 107915"},"PeriodicalIF":4.8,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144889350","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}

引用次数: 0

Decentralized modal parameter estimation using time-domain stepwise mode reconstruction 基于时域分步模态重构的分散模态参数估计

IF 4.8 2区工程技术

Computers & Structures Pub Date : 2025-08-22 DOI: 10.1016/j.compstruc.2025.107932

Dong Yang , Wei-Xin Ren , Fang-Ming Nie , Yuhong Ma , Guifeng Zhao , Francis T.K. Au

{"title":"Decentralized modal parameter estimation using time-domain stepwise mode reconstruction","authors":"Dong Yang , Wei-Xin Ren , Fang-Ming Nie , Yuhong Ma , Guifeng Zhao , Francis T.K. Au","doi":"10.1016/j.compstruc.2025.107932","DOIUrl":"10.1016/j.compstruc.2025.107932","url":null,"abstract":"<div><div>Infrastructures are often subjected to dynamic loads such as traffic, wind, and earthquake, resulting in non-stationary operational responses. The stationary conditions used in the traditional modal parameter identification methods will affect the identification accuracy. To address this limitation, this paper proposes a decentralized modal parameter estimation framework for non-stationary conditions, which has key improvement measures. The framework introduces the time-domain stepwise mode reconstruction technique, which effectively reduces the influence of noise and non-stationary effects on the accurate modal parameter estimation by iteratively optimizing the frequency estimation and reconstructing mono-components. It also combines automatic initial condition estimation to eliminate the manual initialization process through adaptive baseline correction and multi-scale peak detection. In addition, the framework adopts a decentralized architecture, which enables independent sensor-level analysis, reduces data transmission requirements, and enhances system flexibility. This method supports scalable implementation because structural responses are analyzed independently on each sensor node, and mono-components are combined to extract modal shapes. The effectiveness of the proposed method is verified by using simulated data from a three-degree-of-freedom system, measured data from a real footbridge, and the ASCE benchmark model. The results show that the framework has a strong ability to deal with non-stationary responses and has the potential to achieve accurate and scalable decentralized modal parameter estimation, making it a powerful tool for structural health monitoring.</div></div>","PeriodicalId":50626,"journal":{"name":"Computers & Structures","volume":"317 ","pages":"Article 107932"},"PeriodicalIF":4.8,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144887303","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}

引用次数: 0

A fully separated space-time decomposition for the simulation of viscoelastic structures 粘弹性结构模拟的完全分离时空分解

IF 4.8 2区工程技术

Computers & Structures Pub Date : 2025-08-21 DOI: 10.1016/j.compstruc.2025.107912

Hendrik Geisler , David Néron , Philipp Junker

引用次数: 0

Characterizing failure morphologies in fiber-reinforced composites via k-means clustering based multiscale framework 基于k-均值聚类的多尺度框架表征纤维增强复合材料的失效形态

IF 4.8 2区工程技术

Computers & Structures Pub Date : 2025-08-19 DOI: 10.1016/j.compstruc.2025.107928

Harpreet Singh

{"title":"Characterizing failure morphologies in fiber-reinforced composites via k-means clustering based multiscale framework","authors":"Harpreet Singh","doi":"10.1016/j.compstruc.2025.107928","DOIUrl":"10.1016/j.compstruc.2025.107928","url":null,"abstract":"<div><div>A novel homogenization methodology is proposed for analyzing the failure of fiber-reinforced composite materials, utilizing elastic and eigen influence tensors within a damage informed transformation field analysis (D-TFA) framework. This approach includes a technique for calculating macroscopic damage under uniform stress and strain conditions, offering more realistic simulations. Computational efficiency is enhanced through a reduced-order modeling strategy, while elastic and eigen strain distribution driven <span><math><mi>k</mi></math></span>-means clustering methods are employed to partition the microscale domain. The model’s performance is assessed by simulating the response of a representative volume element (RVE) treated as a homogenized continuum. Subsequently, a comparative assessment is carried out to check the efficacy of two clustering schemes. Damage morphologies are calculated using proposed framework and compared with predictions obtained using finite element method. Furthermore, open-hole specimen tests are simulated and failure paths are predicted for the domains with different fiber layups. Ultimately, we show that D-TFA can accurately capture damage patterns and directional strengths, providing improved predictions of the mechanical behavior of composite materials. It has been demonstrated that higher cluster counts are crucial for capturing a more accurate stress–strain response, especially for complex microstructures.</div></div>","PeriodicalId":50626,"journal":{"name":"Computers & Structures","volume":"317 ","pages":"Article 107928"},"PeriodicalIF":4.8,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144864001","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}

引用次数: 0