Proceedings of the Fourteenth International Conference on Computational Structures Technology最新文献_第2页

Multi-scale structural design considering cellular connectivity using machine learning approaches 使用机器学习方法考虑蜂窝连接的多尺度结构设计

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.2.7

L. Meng, C. Yang, Y. L. Hou, T. Gao, J.H. Zhu, W.H. Zhang

引用次数: 0

Experimental and numerical study on retrofitting of historical masonry vaults by means of fibre-reinforced mortar 纤维增强砂浆加固历史砌体拱顶的试验与数值研究

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.12.4

C. Chisari, M. Latour, G. Rizzano, G. De Matteis

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Advanced nonlinear simulations of a masonry viaduct using a macroscale anisotropic model 采用宏观各向异性模型对砌体高架桥进行非线性模拟

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.9.7

B. Pantò, S. Grosman, L. Macorini, B. Izzuddin, D. Oliveira, P. Lourenço

引用次数: 0

Acceleration of probabilistic analysis of steel structures by DOProC and Monte Carlo approaches with use of distributed computing 基于分布式计算的DOProC和蒙特卡罗方法加速钢结构概率分析

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.6.2

M. Krejsa, J. Brožovský, P. Lehner, J. Koktan

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Forgotten and suffering structures - detailed inspection and finite element analysis of two railroad masonry arches in Poland 被遗忘和受苦的结构——波兰两个铁路砌筑拱的详细检查和有限元分析

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.9.1

B. Sobczyk, J. Chróścielewski, M. Miśkiewicz, L. Pyrzowski, K. Wilde

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Evaluation of Direct Strength Method for Local Buckling Strength of Cold Formed Steel Stiffened Lipped Channels 冷弯型钢加筋唇形通道局部屈曲强度的直接强度法评定

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.14.3

I.S. Chakka, M.V.V. Kumar

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Data-driven characterization of viscoelastic materials using hydroacoustic measurements 使用水声测量的粘弹性材料的数据驱动特性

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.20.1

L. del Rio-Martin, A. Prieto

{"title":"Data-driven characterization of viscoelastic materials using hydroacoustic measurements","authors":"L. del Rio-Martin, A. Prieto","doi":"10.4203/ccc.3.20.1","DOIUrl":"https://doi.org/10.4203/ccc.3.20.1","url":null,"abstract":"Any numerical procedure in computational acoustics requires choosing an appropriate model for the constitutive law of the vibroacoustic material under consideration. Regarding the linear wave propagation in a viscoelastic material, the most common model assumptions are the classical Maxwell and Kelvin-Voigt models or the most recent fractional derivative models. Usually, once the frequency-dependent constitutive law is fixed, the intrinsic parameters of the mathematical model are estimated to fit the available experimental data with the mechanical response of that model. This modelling methodology potentially suffers from the epistemic uncertainty of a priori inadequate model selection. However, in this work, the mathematical modelling of linear viscoelastic materials and, consequently, the choice of their frequency-dependent constitutive laws is performed based only on the available experimental measurements without imposing any functional dependence on the parameters. This data-driven approach requires the numerical solution of an inverse problem for each frequency of interest. The acoustic response of a viscoelastic material due to the time-harmonic excitations generated by a transducer has been calculated numerically. In these numerical simulations, the non-planar directivity pattern of the transducer has been taken into account. In addition, the acoustic pressure field has been approximated using a plane wave discretisation to avoid numerical pollution errors at a high-frequency regime and reduce the computational cost of the calculations solving each inverse problem. To illustrate the proposed methodology for selecting the visco-elastic model, experimental measurements of insertion loss and fractional power dissipation in underwater acoustics have been used.","PeriodicalId":143311,"journal":{"name":"Proceedings of the Fourteenth International Conference on Computational Structures Technology","volume":"12 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132899595","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

Parametric Design Tool for Frameworks with Minimal Rigidity Condition 最小刚度条件下框架参数化设计工具

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.5.5

A. Ackermann, O. Gáspár

引用次数: 0

Robust Design Optimization of Structures Using Stochastic Simulation Based Approach 基于随机仿真方法的结构稳健设计优化

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.4.4

Mohd Khalid, S. Bansal

引用次数: 0

Vulnerability reduction of structures under dynamic loadings 结构在动荷载作用下的易损性降低

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.11.4

D. Cancellara, F. De Angelis

{"title":"Vulnerability reduction of structures under dynamic loadings","authors":"D. Cancellara, F. De Angelis","doi":"10.4203/ccc.3.11.4","DOIUrl":"https://doi.org/10.4203/ccc.3.11.4","url":null,"abstract":"In the present work a suitable retrofitting strategy is presented for reducing the vulnerability of under-designed structures subject to dynamic loadings. After the recent seismic events in Italy the seismic codes have been modified and the seismic risk associated to a large part of the territory has been substantially increased. Many structures build in the past with respect to obsolete standards no longer satisfy the current technical standards for the seismic codes. In the present work a retrofitting strategy for under-designed structures is investigated by the adoption of steel braces realized in series with innovative buckling restrained axial dampers in the nonlinear modeling of the dissipative behavior of structures under dynamic actions. The adopted retrofitting approach shows to be useful for the mitigation of the seismic risk of under-designed structures by providing a suitable increment of the safety degree of under-designed structures. A pushover analysis is performed in order to determine the capacity curve of the considered under-designed structure and the safety factors are evaluated for the structure before retrofitting and after the innovative retrofitting. The reported analysis shows that the investigated innovative retrofitting strategy can be usefully applied for an effective reduction of the seismic vulnerability of under-designed structures by suitably increasing the safety factors of the investigated structures subject to dynamic loadings.","PeriodicalId":143311,"journal":{"name":"Proceedings of the Fourteenth International Conference on Computational Structures Technology","volume":"35 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":"123828730","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