15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII)最新文献_第9页

Neural Network-Based Constitutive Model for Solid Materials 基于神经网络的固体材料本构模型

15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII) Pub Date : 1900-01-01 DOI: 10.23967/wccm-apcom.2022.079

R. Alhayki, E. Muttio-Zavala, W. Dettmer, D. Peric

引用次数: 0

Numerical simulation of interaction between two Savonius turbines aimed at practical application of ocean current power generation 面向海流发电实际应用的两台Savonius水轮机相互作用的数值模拟

15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII) Pub Date : 1900-01-01 DOI: 10.23967/wccm-apcom.2022.084

A. Minakawa, T. Kawamura

{"title":"Numerical simulation of interaction between two Savonius turbines aimed at practical application of ocean current power generation","authors":"A. Minakawa, T. Kawamura","doi":"10.23967/wccm-apcom.2022.084","DOIUrl":"https://doi.org/10.23967/wccm-apcom.2022.084","url":null,"abstract":". One of the vertical axis wind turbines that utilize drag force is the Savonius wind turbine. Savonius wind turbines are characterized by low speed rotation and high torque, so they are rarely used for wind power generation but have possibility to apply to ocean current power generation, which has been attracting attention recently. In this report, we actually performed a numerical simulation of the flow using suitable grid, focusing mainly on the case where two wind turbines are rotating in reverse at a constant speed, and investigated the state of the flow field. Two-dimensional incompressible Navier-Stokes equations are adopted as the basic equation and solved numerically using the finite difference method. In addition, in order to enable calculation even in a high Reynolds number flow, the nonlinear term of the equations are approximated by using the third-order accuracy upstream difference method. The simulation is performed under the condition that the flow corresponds to three types of angles of 90 degrees, 45 degrees, and 0 degrees with respect to the line connecting the centers of the two wind turbines. The flow field differs greatly depending on each angle, and the interaction between the two wind turbines has been clarified.","PeriodicalId":429847,"journal":{"name":"15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII)","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":"128794520","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

Toward Concurrent Multiscale Topology Optimization for High Heat Conductive and Light Weight Structure 面向高导热轻量化结构的并行多尺度拓扑优化

15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII) Pub Date : 1900-01-01 DOI: 10.23967/wccm-apcom.2022.118

Musaddiq Al Ali, M. Shimoda

{"title":"Toward Concurrent Multiscale Topology Optimization for High Heat Conductive and Light Weight Structure","authors":"Musaddiq Al Ali, M. Shimoda","doi":"10.23967/wccm-apcom.2022.118","DOIUrl":"https://doi.org/10.23967/wccm-apcom.2022.118","url":null,"abstract":". Solid structures that are light and heat conductive are significant in a variety of engineering applications. We investigated multiscale topology optimization for excessive lightweight heat-conductive porous structures and introduced a mathematical optimization model formulation for concurrently optimizing the macrostructure and the constitutive pores (microstructure) to maximize the design performance. The microscale is constructed utilizing the asymptotic homogenization approach as a representative volume element. During the optimization process, the effective heat conductivity tensor of the microstructure is assessed and utilized as the heat conductivity of the macrostructure for each iteration. To address the macro and microstructure connection, a sensitivity analysis of this concurrent optimization approach was developed. Moreover, the method of introducing initial predetermined design domain was investigated to attain fin-like design in order to despite heat efficiently. Results showed very good results for attaining excessive weight reduction with attaining high heat conductivity. Moreover, the method of predetermined design domains increased the performance significantly.","PeriodicalId":429847,"journal":{"name":"15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII)","volume":"27 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":"125033595","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: 2

Code-Oriented Floor Acceleration Response Spectra of RC Framed Buildings Accounting for Nonlinear Response of Masonry Infills 考虑砌体非线性响应的钢筋混凝土框架结构楼板加速度响应谱

15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII) Pub Date : 1900-01-01 DOI: 10.23967/wccm-apcom.2022.026

A. Donnici, F. Mazza

{"title":"Code-Oriented Floor Acceleration Response Spectra of RC Framed Buildings Accounting for Nonlinear Response of Masonry Infills","authors":"A. Donnici, F. Mazza","doi":"10.23967/wccm-apcom.2022.026","DOIUrl":"https://doi.org/10.23967/wccm-apcom.2022.026","url":null,"abstract":". Modern code-oriented elastic floor response spectra formulations for RC framed structures do not take into account effects of non-negligible nonstructural components in terms of mass and stiffness, such as masonry infills (MIs). MIs nonlinear behaviour can be represented through the combination and mutual interaction between the in-plane (IP) and out-of-plane (OOP) responses. The present work is aimed at identifying the effect of IP and OOP nonlinear modelling assumptions on floor acceleration response spectra, consistently with the required seismic intensity level for simplified verification of life-threatening nonstructural elements. To this end, a spatial one-bay multi-storey shear-type model is considered as equivalent to infilled RC framed buildings with common double-leaf MIs. Additional variability of the following design parameters is considered: number of storeys (three, five and seven); behaviour factor (low, 1.5, medium, 3, and high, 4.5); OOP strength of MIs, with lower and upper bound values corresponding to one- and two-way arching mechanisms, respectively. A recently proposed computer code, that includes a five-element nonlinear infill macro-model comprising four diagonal OOP beams and one (horizontal) central IP truss, is considered for the numerical investigation. The proposed algorithm modifies stiffness and strength values of MIs in the OOP direction on the basis of simultaneous or prior IP damage and vice versa. Moreover, a lumped plasticity model describes the inelastic behaviour of RC frame members.","PeriodicalId":429847,"journal":{"name":"15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII)","volume":"18 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":"122014457","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

Reduced Order Modeling for modular anisotropic Structures based on Proper Orthogonal Decomposition and Mesh Tying 基于适当正交分解和网格捆绑的模块化各向异性结构降阶建模

15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII) Pub Date : 1900-01-01 DOI: 10.23967/wccm-apcom.2022.097

S. Ritzert, D. Macek, J. Simon, S. Reese

{"title":"Reduced Order Modeling for modular anisotropic Structures based on Proper Orthogonal Decomposition and Mesh Tying","authors":"S. Ritzert, D. Macek, J. Simon, S. Reese","doi":"10.23967/wccm-apcom.2022.097","DOIUrl":"https://doi.org/10.23967/wccm-apcom.2022.097","url":null,"abstract":". A model order reduction technique in combination with mesh tying is used to efﬁciently sim-ulate a large number of different structures that are assembled from a set of substructures. The stiffness matrices of the substructures are computed separately and assembled into a global stiffness matrix with tied contact formulation. The computational time can be further decreased by reducing the degrees of freedom of each substructure with a projection-based model order reduction technique. The precomputations to obtain the mode matrices are computationally cheap because they can be carried out on each substructure separately. For the development and optimization of new construction strategies for ﬁber reinforced concrete, a large number of different combinations of the modules have to be tested. The nonlinear anisotropic material behavior, like the primary directions of orthotropic materials, leads to parameter-dependent mode matrices. The precomputations can only be done for a relatively small number of parameters. For all other parameters, the mode matrices have to be adapted with interpolation methods to obtain an accurate solution .","PeriodicalId":429847,"journal":{"name":"15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII)","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":"131283126","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

Development of a hybrid model for large-scale plant RUL prediction based on data and physical models 基于数据和物理模型的大型工厂RUL预测混合模型的开发

15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII) Pub Date : 1900-01-01 DOI: 10.23967/wccm-apcom.2022.040

E. Öztürk

引用次数: 0

A Two-dimensional Bio-chemo-hydro-mechanical Model for In-situ Stabilization of Soils using Biochemical Processes 土壤生物化学原位稳定的二维生化-水-力学模型

15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII) Pub Date : 1900-01-01 DOI: 10.23967/wccm-apcom.2022.012

P. Bhukya, D. Arnepalli

{"title":"A Two-dimensional Bio-chemo-hydro-mechanical Model for In-situ Stabilization of Soils using Biochemical Processes","authors":"P. Bhukya, D. Arnepalli","doi":"10.23967/wccm-apcom.2022.012","DOIUrl":"https://doi.org/10.23967/wccm-apcom.2022.012","url":null,"abstract":". Ground improvement techniques involving chemical additives are often energy-intensive and unsustainable due to the environmental distress caused by them. Sustainable biocementation processes such as microbially induced calcite precipitation (MICP) can overcome the drawbacks of traditional ground improvement techniques. Capturing the underlying coupled mechanisms in the biocementation process requires the knowledge of diverse ﬁelds of bio-chemo-hydro-mechanics. Modeling such a complex phenomenon is imperative for the successful implementation of the stabilisation technique in the ﬁeld. The existing coupled models on biocementation are chieﬂy intended to validate the observed behavior of laboratory-scale biocemented specimens. This scenario demands the need to develop a coupled bio-chemo-hydro-mechanical (BCHM) model for ﬁeld simulations. The BCHM model was developed with ﬁnite element and backward Euler ﬁnite difference approximations in space and time. The Galerkin weak formulations are derived for the mass balance equations of the coupled model. The advective-governed transport phenomena are accommodated with the Petrov-Galerkin formulation. An overall kinetically controlled reactive model is implemented to reproduce the urea hydrolysis and associated chemical kinetics. The reduced permeability of the biocemented soil is accounted in terms of its effective porosity, using the modiﬁed Kozeny-Carman equation. The ﬁxed-point iteration scheme is implemented for bio-chemo-hydraulics to deal with the nonlinearity in the balance equations. The mechanical constitutive","PeriodicalId":429847,"journal":{"name":"15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII)","volume":"2 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":"128236434","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

The effect of particle shape on rockfall events 颗粒形状对岩崩事件的影响

15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII) Pub Date : 1900-01-01 DOI: 10.23967/wccm-apcom.2022.112

R. Shiyake, D. Krengel, M. Kikumoto

引用次数: 0

A Deep Convolutional Neural Network Approach as Surrogate Model for Topology Optimization 基于深度卷积神经网络的拓扑优化替代模型

15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII) Pub Date : 1900-01-01 DOI: 10.23967/wccm-apcom.2022.002

X. Kong, Y. Wu

引用次数: 0

Lateral Resistance of Buried Pipes by Frictional Limit Analysis 地埋管横向阻力的摩擦极限分析

15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII) Pub Date : 1900-01-01 DOI: 10.23967/wccm-apcom.2022.058

F. Figueiredo, L. Borges, L. Moreira

引用次数: 0