Proceedings of the Fourteenth International Conference on Computational Structures Technology最新文献_第3页

Predominant Research Themes in Using Machine Learning in Structural Health Monitoring 机器学习在结构健康监测中的主要研究主题

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.13.4

M. Akber, X. Zhang

引用次数: 0

A Recursive Model Updating Algorithm for Multi-element Hybrid Simulation of Structures 结构多单元混合仿真的递归模型更新算法

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.10.2

F. Mokhtari, A. Imanpour

{"title":"A Recursive Model Updating Algorithm for Multi-element Hybrid Simulation of Structures","authors":"F. Mokhtari, A. Imanpour","doi":"10.4203/ccc.3.10.2","DOIUrl":"https://doi.org/10.4203/ccc.3.10.2","url":null,"abstract":"Hybrid simulation is a cost-effective method of testing structures under seismic loading that combines numerical and experimental methods through partitioning the structure into; 1) numerical substructure simulating the well-understood components of the structure, and 2) physical substructure representing the critical components of the structure. The hybrid simulation results can become biased and uncertain when only one or a limited number of potential critical components, e.g., seismic fuses, are physically tested due to laboratory or cost constraints. Furthermore, the critical components modelled in the numerical substructure are often calibrated using experimental test results of similar prototype specimens under a predefined loading protocol, which fails to consider the effects of dynamic loading characteristics to which it will be subjected in hybrid simulation. This paper proposes a new recursive model updating algorithm incorporated into the conventional seismic hybrid simulation framework to leverage the data collected in real-time from the physical specimen of one of the critical elements and integrate a new data-driven model into the numerical substructure. The data-driven model, which is being progressively updated owing to the proposed model updating algorithm, is responsible for predicting the nonlinear cyclic response of the other critical components of the system that are not physically tested. To develop the data-driven model, the parameters of the Prandtl-Ishlinskii model are first estimated using a sparse regression algorithm and then updated during the hybrid simulation using the recursive least-squares algorithm. The simulation accuracy of the model updating algorithm is assessed through nonlinear response history analysis of a two-storey steel buckling-restrained braced frame, which consists of a virtual experimental specimen (first-storey brace) and the model","PeriodicalId":143311,"journal":{"name":"Proceedings of the Fourteenth International Conference on Computational Structures Technology","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133221240","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

Validation of an automated kriging-based methodology to calibrate PSO parameters: application to parametric optimization of truss structures 基于克里格的PSO参数自动标定方法的验证:在桁架结构参数优化中的应用

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.4.5

J. Tondut, N. Di Césaré, S. Ronel

{"title":"Validation of an automated kriging-based methodology to calibrate PSO parameters: application to parametric optimization of truss structures","authors":"J. Tondut, N. Di Césaré, S. Ronel","doi":"10.4203/ccc.3.4.5","DOIUrl":"https://doi.org/10.4203/ccc.3.4.5","url":null,"abstract":"For years, the Particle Swarm Optimization (PSO) algorithm has been widely studied and many improved versions have been developed: from the swarm's topologies to the addition of new parameters, including machine learning approaches. However, the tuning of the fundamental PSO parameters has been less studied, but may lead to significant improvements on the convergence accuracy of PSO. This paper aims to develop an automated methodology to calibrate PSO parameters for a given optimization problem. The process is based on the kriging estimation of the best combination of PSO parameters. In this way, the Automated Tuning parameter Calibration (ATpC) methodology gives the optimal PSO setup for each considered problem in order to lead to a better convergence accuracy. The proposed ATpC methodology is applied to parametric optimization of truss structures. ATpC methodology performance is assessed by comparison of two different PSO setups usually used in the literature. The numerical results show that the ATpC methodology allows to significantly improve the convergence accuracy of PSO.","PeriodicalId":143311,"journal":{"name":"Proceedings of the Fourteenth International Conference on Computational Structures Technology","volume":"95 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114131130","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 Framework for an artificial intelligence controlled seismic structural design system using ontologies and SysML 基于本体和SysML的人工智能控制抗震结构设计系统框架

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.10.4

L. Xiang, G. Li, H. Li

{"title":"A Framework for an artificial intelligence controlled seismic structural design system using ontologies and SysML","authors":"L. Xiang, G. Li, H. Li","doi":"10.4203/ccc.3.10.4","DOIUrl":"https://doi.org/10.4203/ccc.3.10.4","url":null,"abstract":"The assessment and design of structure resilience under earthquakes have been a major concern for structural experts, and researchers have made improvements in terms of analytical methods, theoretical models, failure criteria, seismic reliability, and damage assessment. However, with increased knowledge sharing and collaborative work within the civil engineering industry, there is a growing interest in cross-disciplinary, multi-objective and holistic approaches to resilience design over single effort to improve structural resilience previously. Ontologies and the semantic web belonging to symbolic artificial intelligence are currently advantageous in organising multi-source information and automated data exchange, while the graphical system modelling language SysML is a state-of-the-art system tool for designing interdisciplinary tasks. However, civil engineering professionals have little exposure to knowledge engineering and systems engineering and lack the foundation to build joint work. This study therefore proposes a framework based on ontologies and SysML for a fully machine-controlled structural seismic system. Through ontologies, SysML graphical workflows, AI code and artifacts, we can construct command streaming that understands semantics, actively searches and bridges different disciplinary contexts, giving computers a simulated sense of autonomy to understand and perform cross-domain tasks without human intervention. The proposed architecture, when applied to multidisciplinary involvement in structural resilience design, allows the AI to control and integrate isolated seismic components","PeriodicalId":143311,"journal":{"name":"Proceedings of the Fourteenth International Conference on Computational Structures Technology","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122865633","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 Solution Strategy for Robust Topology Optimization when the Nominal and Expected Compliance are the Same 当标称顺应性和期望顺应性相同时鲁棒拓扑优化的解决策略

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.4.2

A. Csébfalvi, J. Lógó

引用次数: 0

Performance of a damage sensitive parameter obtained from different response-based bridge weigh-in-motion 基于不同响应的桥梁运动称重损伤敏感参数的性能分析

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.13.3

D. Paul, K. Roy

{"title":"Performance of a damage sensitive parameter obtained from different response-based bridge weigh-in-motion","authors":"D. Paul, K. Roy","doi":"10.4203/ccc.3.13.3","DOIUrl":"https://doi.org/10.4203/ccc.3.13.3","url":null,"abstract":"The importance of bridge health monitoring (BHM) has increased considerably and has become an essential component in monitoring transportation network. Visual inspection is mostly used to monitor the structural health of bridges. However, it has some downsides such as variability in the judgment of individual inspecting personnel, the necessity of physical presence at the bridge location, inaccessibility at remote areas, and many more. Several BHM methods are available, however, there is no solution for any type of bridge and damage condition. This leaves greater scope for new technologies to be adopted for BHM. The bridge weigh-in-motion (B-WIM) is gaining much attention as a promising alternative approach to BHM. B-WIM system captures bridge response due to vehicles traversing over it and estimates the vehicle weights. The main advantages of the B-WIM system are durability, portability, and easy installation. In addition to the weight estimation, it provides other structural information and also overcomes the limitations of pavement-based weigh-in-motion (P-WIM) systems. A few damage sensitive parameters (DSPs) have recently been developed in the last decade using the B-WIM system. However, the performance of a DSP computed utilizing multiple response time histories from a single bridge under identical circumstances is seldom studied. In this paper, a 3D finite element (FE) bridge model of a real bridge is analyzed and acceleration, strain","PeriodicalId":143311,"journal":{"name":"Proceedings of the Fourteenth International Conference on Computational Structures Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130539757","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

Nonlinear quasi-static modelling of cable structures including geometric constraints 含几何约束的索结构非线性拟静力建模

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.19.1

M. Ben Wesdou, N. Azouz, P. Joli, J. Néji

引用次数: 0

Evaluation of the Response of a Masonry Cross Vault Subjected to Vertical Loading using the Discrete Macro-Element Method 用离散宏元法评价竖向荷载作用下砌体拱顶的响应

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.9.6

C. Chácara, F. Cannizzaro, B. Pantò, D. Rapicavoli, P. Lourenço, I. Caliò

{"title":"Evaluation of the Response of a Masonry Cross Vault Subjected to Vertical Loading using the Discrete Macro-Element Method","authors":"C. Chácara, F. Cannizzaro, B. Pantò, D. Rapicavoli, P. Lourenço, I. Caliò","doi":"10.4203/ccc.3.9.6","DOIUrl":"https://doi.org/10.4203/ccc.3.9.6","url":null,"abstract":"This paper was focused on the application of an innovative modelling approach, known as the Discrete Macro-Element Method (DMEM), for simulating the experimental response of a ribbed masonry cross vault subjected to vertical loading. This numerical approach is based on a simplified mechanical scheme which can simulate the main in-plane and out-of-plane mechanisms of masonry structures. The numerical model of the ribbed masonry cross vault, described by approximately 1250 degrees of freedom, was subjected to an incremental vertical load aiming at simulating the experimental setup. Two different values of cohesion (0.05 MPa and 0.10 MPa) were taken in consideration aiming at assessing the influence of this mechanical property on the nonlinear response of the masonry specimen when subjected to vertical loading. The displacement of three monitored points as well as the vertical reaction of the numerical model were assessed and compared to those obtained experimentally. It was observed that the numerical model presented a slightly higher stiffness than the experimental one; however, it was possible to replicate the","PeriodicalId":143311,"journal":{"name":"Proceedings of the Fourteenth International Conference on Computational Structures Technology","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128880657","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

Adaptive coupled discrete/continuous approach for the forming of materials 材料成形的自适应离散/连续耦合方法

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.17.1

F. Yahya, C. Hubert, N. Leconte, L. Dubar

引用次数: 0

Pendulum Impact Hammer Tests on Spruce Glued Laminated Timber - Preliminary Results 云杉胶合层压木材的摆锤冲击试验。初步结果

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.15.2

A. S. Cao, M. Lolli, A. Frangi

引用次数: 0