Computational Mechanics最新文献

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Hybrid reduced-order models for real-time simulation of blood perfusion in parameterized lobular structures 用于参数化小叶结构血液灌注实时模拟的混合降阶模型
Computational Mechanics Pub Date : 2025-09-13 DOI: 10.1007/s00466-025-02681-7
Ahsan Ali Siddiqui, Stein K.F. Stoter, David Néron, Dominik Schillinger
{"title":"Hybrid reduced-order models for real-time simulation of blood perfusion in parameterized lobular structures","authors":"Ahsan Ali Siddiqui, Stein K.F. Stoter, David Néron, Dominik Schillinger","doi":"10.1007/s00466-025-02681-7","DOIUrl":"https://doi.org/10.1007/s00466-025-02681-7","url":null,"abstract":"Abstract Perfusion through a liver lobule is influenced by a range of physiological parameters such as lobule geometry, permeability, blood viscosity, and pressure gradients. We present a hybrid reduced-order modeling approach for real-time simulation of perfusion profiles in 2D lobular structures of the liver that addresses all these parametric aspects. Building on our previous work in Siddiqui et al. (Adv Model Simul Eng Sci 11:22, 2024), we extend the methodology to incorporate a broader range of physiological parameters and multiple interconnected lobules, and introduce hybrid reduced-order representations, thereby achieving even greater computational speedups. We illustrate our reduced-order representations through a stepwise construction, sequentially incorporating different aspects of the parameterized perfusion model. To demonstrate the viability of our approach, we first focus on a model of a single lobule. It is then extended to a model of several interconnected lobules via the formulation of suitable coupling terms. Our simulation results show that our hybrid reduced-order modeling approach is up to three orders of magnitude faster than corresponding high-fidelity finite element computations. At the same time, it maintains responsiveness to physical stimuli and produces results for variations in health conditions that are consistent with clinical experience.","PeriodicalId":505349,"journal":{"name":"Computational Mechanics","volume":"77 3","pages":"625-649"},"PeriodicalIF":0.0,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00466-025-02681-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147882852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Contact detection in computational mechanics: a signed distance field approach for convex superelliptical bodies 计算力学中的接触检测:凸超椭圆体的符号距离场方法
Computational Mechanics Pub Date : 2025-07-29 DOI: 10.1007/s00466-025-02666-6
Olivier R. Gouveia, J. M. Guedes, Rui B. Ruben
{"title":"Contact detection in computational mechanics: a signed distance field approach for convex superelliptical bodies","authors":"Olivier R. Gouveia, J. M. Guedes, Rui B. Ruben","doi":"10.1007/s00466-025-02666-6","DOIUrl":"https://doi.org/10.1007/s00466-025-02666-6","url":null,"abstract":"Abstract Accurate contact and impact detection remain key challenges in computational mechanics. This work presents a methodology for non-conformal contact detection between rigid convex bodies with superelliptical boundaries, represented using their respective Signed Distance Fields (SDFs). A method for approximating the SDF of discretized superelliptical boundaries is introduced, along with the concept of the Gap Distance Field (GDF). Reformulating the contact detection problem as an unconstrained minimization over the GDF simplifies the computation of minimum distance and overlap, while the closest contact point is obtained by projecting the SDF gradients. Numerical experiments involving superelliptical contact bodies validate the accuracy and robustness of the proposed approach. Additionally, the common normal (CN) condition naturally arises within this framework, and together with the optimality of the GDF minima, provides a sufficient condition for determining the minimum distance between the interacting bodies.","PeriodicalId":505349,"journal":{"name":"Computational Mechanics","volume":"76 6","pages":"1635-1657"},"PeriodicalIF":0.0,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00466-025-02666-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147904971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An efficient procedure for concrete fracture analysis based on mesh refinement ergodicity 基于网格细化公差的混凝土断裂分析高效程序
Computational Mechanics Pub Date : 2024-06-12 DOI: 10.1007/s00466-024-02509-w
G. Chacón, F. L. Rivarola, D. van Huyssteen, P. L. Steinmann, G. Etse
{"title":"An efficient procedure for concrete fracture analysis based on mesh refinement ergodicity","authors":"G. Chacón, F. L. Rivarola, D. van Huyssteen, P. L. Steinmann, G. Etse","doi":"10.1007/s00466-024-02509-w","DOIUrl":"https://doi.org/10.1007/s00466-024-02509-w","url":null,"abstract":"","PeriodicalId":505349,"journal":{"name":"Computational Mechanics","volume":"30 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141353766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 adaptation of beam-to-beam contact interactions implemented for geometrically exact Simo–Reissner beams 为几何精确的 Simo-Reissner 梁实施梁对梁接触相互作用的有限体积调整
Computational Mechanics Pub Date : 2024-06-11 DOI: 10.1007/s00466-024-02503-2
Seevani Bali, Ž. Tuković, P. Cardiff, A. Ivanković, V. Pakrashi
{"title":"A finite volume adaptation of beam-to-beam contact interactions implemented for geometrically exact Simo–Reissner beams","authors":"Seevani Bali, Ž. Tuković, P. Cardiff, A. Ivanković, V. Pakrashi","doi":"10.1007/s00466-024-02503-2","DOIUrl":"https://doi.org/10.1007/s00466-024-02503-2","url":null,"abstract":"","PeriodicalId":505349,"journal":{"name":"Computational Mechanics","volume":"84 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141359849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Imposing Dirichlet boundary conditions directly for FFT-based computational micromechanics 为基于 FFT 的微机械计算直接施加 Dirichlet 边界条件
Computational Mechanics Pub Date : 2024-06-07 DOI: 10.1007/s00466-024-02469-1
Lennart Risthaus, M. Schneider
{"title":"Imposing Dirichlet boundary conditions directly for FFT-based computational micromechanics","authors":"Lennart Risthaus, M. Schneider","doi":"10.1007/s00466-024-02469-1","DOIUrl":"https://doi.org/10.1007/s00466-024-02469-1","url":null,"abstract":"","PeriodicalId":505349,"journal":{"name":"Computational Mechanics","volume":" 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141371093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structure-preserving formulations for data-driven analysis of coupled multi-physics systems 用于多物理场耦合系统数据驱动分析的结构保持公式
Computational Mechanics Pub Date : 2024-06-07 DOI: 10.1007/s00466-024-02508-x
Alba Muixí, David González, Francisco Chinesta, Elías Cueto
{"title":"Structure-preserving formulations for data-driven analysis of coupled multi-physics systems","authors":"Alba Muixí, David González, Francisco Chinesta, Elías Cueto","doi":"10.1007/s00466-024-02508-x","DOIUrl":"https://doi.org/10.1007/s00466-024-02508-x","url":null,"abstract":"","PeriodicalId":505349,"journal":{"name":"Computational Mechanics","volume":" 41","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141375183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A displacement-based material point method for weakly compressible free-surface flows 基于位移的弱可压缩自由表面流材料点方法
Computational Mechanics Pub Date : 2024-06-07 DOI: 10.1007/s00466-024-02510-3
Ram Mohan Telikicherla, G. Moutsanidis
{"title":"A displacement-based material point method for weakly compressible free-surface flows","authors":"Ram Mohan Telikicherla, G. Moutsanidis","doi":"10.1007/s00466-024-02510-3","DOIUrl":"https://doi.org/10.1007/s00466-024-02510-3","url":null,"abstract":"","PeriodicalId":505349,"journal":{"name":"Computational Mechanics","volume":" 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141372862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Smoothed naturally stabilized RKPM for non-linear explicit dynamics with novel stress gradient update 针对非线性显式动力学的平滑自然稳定 RKPM,采用新型应力梯度更新技术
Computational Mechanics Pub Date : 2024-05-16 DOI: 10.1007/s00466-024-02494-0
Jiarui Wang, Michael Hillman, Dominic Wilmes, Joseph Magallanes, Yuri Bazilevs
{"title":"Smoothed naturally stabilized RKPM for non-linear explicit dynamics with novel stress gradient update","authors":"Jiarui Wang, Michael Hillman, Dominic Wilmes, Joseph Magallanes, Yuri Bazilevs","doi":"10.1007/s00466-024-02494-0","DOIUrl":"https://doi.org/10.1007/s00466-024-02494-0","url":null,"abstract":"","PeriodicalId":505349,"journal":{"name":"Computational Mechanics","volume":"11 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140969025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Higher-order multi-scale deep Ritz method (HOMS-DRM) and its convergence analysis for solving thermal transfer problems of composite materials 用于解决复合材料热传递问题的高阶多尺度深里兹方法(HOMS-DRM)及其收敛性分析
Computational Mechanics Pub Date : 2024-05-15 DOI: 10.1007/s00466-024-02491-3
Jiale Linghu, Hao Dong, Y. Nie, Junzhi Cui
{"title":"Higher-order multi-scale deep Ritz method (HOMS-DRM) and its convergence analysis for solving thermal transfer problems of composite materials","authors":"Jiale Linghu, Hao Dong, Y. Nie, Junzhi Cui","doi":"10.1007/s00466-024-02491-3","DOIUrl":"https://doi.org/10.1007/s00466-024-02491-3","url":null,"abstract":"","PeriodicalId":505349,"journal":{"name":"Computational Mechanics","volume":"7 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140974439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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