Engineering Analysis with Boundary Elements最新文献_第10页

Interplay of photonic, electrical, and inertial loads on the stability of rotating sector perovskite sandwich plates with a GPL-based nanocomposite core 光子、电子和惯性载荷对带有基于 GPL 的纳米复合材料核心的旋转扇形过氧化物夹层板稳定性的相互作用

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-07-24 DOI: 10.1016/j.enganabound.2024.105879

{"title":"Interplay of photonic, electrical, and inertial loads on the stability of rotating sector perovskite sandwich plates with a GPL-based nanocomposite core","authors":"","doi":"10.1016/j.enganabound.2024.105879","DOIUrl":"10.1016/j.enganabound.2024.105879","url":null,"abstract":"<div><p>The bifurcation stability of sandwich sector plates, primarily constructed from lead halide perovskite skins known for their significant photostrictive and electrostrictive properties, is explored. These properties render them highly relevant for multiphysics applications. The influence of a photo-induced thermal environment on the behavior of these plates is also examined. A notable challenge, the inherent stiffness of these structures, is addressed by integrating a nanocomposite laminated core composed of a polymer matrix and graphene platelet (GPL) reinforcers. The GPLs are distributed throughout the core layers according to functionally graded models, significantly enhancing structural integrity. To effectively model the core environment, the Halpin-Tsai micromechanical rule is employed. The structural displacement field is modeled using the first-order shear deformation theory. Moreover, the von-Kármán geometrically nonlinear strain-displacement relations are applied. The constitutive relationships are governed by the theory of linear photo-thermo-electro-elasticity, providing a framework for the analysis of perovskite-based structures. The reorganization of bifurcation points from the pre-buckling route and the linearization of stability equations are performed using the adjacent-equilibrium criterion. The generalized differential quadrature (GDQ) method is utilized to solve the equilibrium equations of pre-buckling and the stability equations of buckling. This comprehensive investigation reveals the critical influence of photonic, electrical, and rotational stimuli on the stability characteristics of advanced perovskite-based sandwich sector plates, demonstrating potential advancements in multiphysics applications.</p></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141769030","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

Synergistic integration of isogeometric analysis and data-driven modeling for enhanced strip footing design on two-layered clays: Advancing geotechnical engineering practices 等地形分析与数据驱动建模的协同整合，增强双层粘土上的条形基脚设计：推进岩土工程实践

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-07-24 DOI: 10.1016/j.enganabound.2024.105880

{"title":"Synergistic integration of isogeometric analysis and data-driven modeling for enhanced strip footing design on two-layered clays: Advancing geotechnical engineering practices","authors":"","doi":"10.1016/j.enganabound.2024.105880","DOIUrl":"10.1016/j.enganabound.2024.105880","url":null,"abstract":"<div><p>This study innovatively combines Isogeometric Analysis (IGA) with Machine Learning (ML) to assess strip footing bearing capacity on dual clayey layers. Overcoming limitations of conventional methods with small sample sizes, our research generates a dataset of 10,000 samples, allowing a thorough exploration of diverse soil profiles. Facilitated by ML, 10,000 IGA analyses using upper bound limit analysis unveil intricate patterns and relationships previously obscured. The key innovation lies in harnessing big data and employing advanced data visualization, particularly 2D and 3D Partial Dependency Plots (PDPs). These PDPs visually showcase the impact of factors such as upper layer thickness, cohesion ratios, shear strength profiles, footing depth, and foundation roughness on bearing capacity. Offering intuitive insights, these visualization tools enhance comprehension, aiding informed decision-making in design and construction. Engineers and geotechnical experts receive a precise predictive tool, optimizing strip footing performance on clayey soil layers. Moreover, this research contributes to advancing geotechnical engineering by enriching fundamental knowledge of load-bearing characteristics. In summary, the fusion of big data, advanced visualization, and upper bound limit analysis, exemplified by PDPs, signifies a substantial leap in geotechnical engineering, impacting design, construction, and infrastructure development.</p></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141769031","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 micropolar damage model for size-dependent concrete fracture problems and crack propagation simulated by PDDO method 针对尺寸相关混凝土断裂问题的微观破坏模型以及用 PDDO 方法模拟的裂纹扩展

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-07-23 DOI: 10.1016/j.enganabound.2024.105882

引用次数: 0

Modeling approach and experiments for the free vibration investigations of spatially coupled shell-plate systems with complex shapes 复杂形状空间耦合壳板系统自由振动研究的建模方法和实验

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-07-18 DOI: 10.1016/j.enganabound.2024.105872

{"title":"Modeling approach and experiments for the free vibration investigations of spatially coupled shell-plate systems with complex shapes","authors":"","doi":"10.1016/j.enganabound.2024.105872","DOIUrl":"10.1016/j.enganabound.2024.105872","url":null,"abstract":"<div><p>A general modeling approach is presented to analyze the free vibration behavior of the spatially coupled shell-plate system (SCSPS) with complex geometric shapes. The coupling mechanism established by the penalty function method can be applied not only to the SCSPS but also to other extensively studied shell-plate structures. The conventional method for irregularly-shaped plates involves the utilization of one-to-one mapping technology (OTOMT) to transform the two-dimensional plane domain of the plate into a square domain, aiming to fulfill the numerical solution requirement for integral calculation. However, since the OTOMT is a planar mapping technique that cannot be applied to shells, in this paper, we propose a coordinate transformation strategy to convert two-dimensional shells into plane geometry in order to address this limitation. The vibration problem is simultaneously resolved numerically using the Hamilton's principle and the Jacobi spectral method. The current method is validated for several key capabilities based on three case studies, as well as modal experiments and the commercial finite element software. Additionally, a series of model evaluations are employed to demonstrate the advantages of the current method. Moreover, the results of the parametric study illustrate the impact of several variables on the natural frequency of the structure.</p></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141637779","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

On SBFEM analysis of complex stiffened cylindrical shells with combined shell-curved beam element: Static and free vibration 利用壳-弯梁组合元素对复杂加劲圆柱壳进行 SBFEM 分析：静态和自由振动

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-07-16 DOI: 10.1016/j.enganabound.2024.105875

{"title":"On SBFEM analysis of complex stiffened cylindrical shells with combined shell-curved beam element: Static and free vibration","authors":"","doi":"10.1016/j.enganabound.2024.105875","DOIUrl":"10.1016/j.enganabound.2024.105875","url":null,"abstract":"<div><p>In this paper, a novel semi-analytical numerical model based on the scaled boundary finite element method (SBFEM) is developed for the static and free vibration analyses of the stiffened cylindrical shells. The SBFEM is a numerical technique in which only the surfaces or boundaries of the computational domain need to be discretized, while an analytical formulation can be derived in the radial direction of the surrounding area. These advanced features enable the spatial dimension to be reduced by one, while the accuracy of the proposed algorithm is maintained. The stiffened shell structure is divided into the shell and stiffeners (curved beam and straight beam), and the basic physical equations as well as the associated boundary conditions of each part are described according to the elasticity theory. The surface of shell and the axis of stiffener are discretized, then the ordinary differential governing equations of shell and stiffeners are derived in the scaled boundary coordinate system using the virtual work principle. Based on the continuity conditions of displacement, the shell and stiffeners are assembled together, and the coupling stiffness and mass matrices are derived. Furthermore, the semi-analytical solutions are obtained by using Padé series expansion method, and the natural frequencies of the stiffened shell are determined through generalized eigenvalue analysis. Comparisons between the present numerical results and solutions available in the published work have been carried out to demonstrate the convergence and accuracy of this approach. At the same time, the influences of the geometric parameters and stiffener configuration on the static and free vibration behaviors of the stiffened cylindrical shells are studied in detail.</p></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141622837","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

Smoothed point interpolation methods for phase-field modelling of pressurised fracture 用于加压断裂相场建模的平滑点插值法

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-07-16 DOI: 10.1016/j.enganabound.2024.105869

{"title":"Smoothed point interpolation methods for phase-field modelling of pressurised fracture","authors":"","doi":"10.1016/j.enganabound.2024.105869","DOIUrl":"10.1016/j.enganabound.2024.105869","url":null,"abstract":"<div><p>The problem of hydraulic fracturing is of great relevance to various areas and is characterised by the occurrence of complex crack patterns with bifurcations and branches. For this reason, an interesting approach is the modelling of hydraulic fracture using a phase-field model. In addition to the discretisation using the Finite Element Method (FEM), some works have already explored the discretisation of the phase-field model with meshfree methods, including the Smoothed Point Interpolation Methods (SPIM) family. Seeking to take advantage of the good convergence results of SPIM for phase-field modelling of brittle fractures, this paper proposes the use of SPIM for phase-field modelling of pressurised fractures. In order to limit the computational cost, a prescribed SPIM-FEM coupling is employed, with the purpose of concentrating the meshless discretisation only in the regions of expected crack propagation. The model is characterised by a constant internal pressure load along the fracture that is applied indirectly from the formulation of the phase-field model. A series of numerical simulations is presented. The aim is to evaluate the proposed model, verify the results and point out characteristics of the phase-field model with internal pressure.</p></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141630014","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

3D-SPH-DEM coupling simulation for the large deformation failure process of check dams under debris flow impact incorporating the nonlinear collision-constraint bond model 泥石流冲击下拦挡坝大变形破坏过程的三维-SPH-DEM耦合模拟，结合非线性碰撞-约束结合模型

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-07-16 DOI: 10.1016/j.enganabound.2024.105877

{"title":"3D-SPH-DEM coupling simulation for the large deformation failure process of check dams under debris flow impact incorporating the nonlinear collision-constraint bond model","authors":"","doi":"10.1016/j.enganabound.2024.105877","DOIUrl":"10.1016/j.enganabound.2024.105877","url":null,"abstract":"<div><p>Computational analysis of debris flow dynamics and its impact on structures, including check dams, is a long-standing problem for hazard prevention. It's a complex issue involving two-phase interaction between fluid mass and solid structure, as well as the large deformation failure of check dams, therefore, three-dimensional simulation of this process remains a scientific challenge. In this paper, a 3D-SPH-DEM coupling model is proposed by incorporating a nonlinear collision-constraint bond model. The model first builds upon our previous 3D-SPH model based on Herschel-Bulkley-Papanastasiou (HBP) rheology to describe the fluid behavior within the debris flow process. Secondly, a constituent particle-based DEM block representation method is integrated to model check dams, and the fluid-solid interaction force between debris flow particles and DEM blocks is obtained. Additionally, a nonlinear collision-constraint bond model with a predefined coefficient <em>α</em> is incorporated to simulate the solid interaction between DEM blocks and characterize the different strength levels of check dams. To verify the proposed model, a well-documented pier cubes failure experiment in a previous study is used, wherein the simulation results well reproduce the failure process as observed in the experiment from the quantitative perspective. The 2010 Yohutagawa debris flow event is selected as the case study. Results show that the proposed model well simulates the fluid-solid interaction phenomenon and can effectively explore the large deformation failure process of check dams under debris flow impact.</p></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141637697","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

An improved CSF model and an improved KGC technique incorporated in SPH for modeling selective laser melting process 将改进的 CSF 模型和改进的 KGC 技术纳入 SPH，用于选择性激光熔化过程建模

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-07-16 DOI: 10.1016/j.enganabound.2024.105876

{"title":"An improved CSF model and an improved KGC technique incorporated in SPH for modeling selective laser melting process","authors":"","doi":"10.1016/j.enganabound.2024.105876","DOIUrl":"10.1016/j.enganabound.2024.105876","url":null,"abstract":"<div><p>Selective laser melting (SLM) is an advanced additive manufacturing technology related to the powder bed fusion (PBF) process. Numerical simulation is the key means of realizing the shape and property control of components for additive manufacturing. In this paper, an improved smoothed particle hydrodynamics (SPH) method is proposed for the numerical simulation of the SLM process, focusing on the melt pool flow. The accuracy of calculations at the free surface is significant for modeling the SLM process and there are kernel function truncation errors of the SPH method at the free surface. Therefore, an improved kernel gradient correction (KGC) technique and an improved continuous surface tension model are proposed to improve the accuracy of calculations at the free surface. The KGC technique can improve the accuracy of the kernel gradient in SPH approximation, however, the accuracy of KGC will decrease on the free surface. To improve the computational accuracy on the free surface, an improved KGC is developed. The surface tension model is significant for the numerical simulation of the SLM process, and an improved continuous surface tension (CSF) model is developed to enhance the stability and accuracy of surface tension modeling. In addition, a Gaussian heat source model and a latent heat model are introduced in the improved SPH model. The accuracy and effectiveness of the present SPH method for simulating the melting and melt pool flow of the SLM process are also verified by four numerical examples.</p></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141623077","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

Acceleration of a wave-structure interaction solver by the Parareal method 用帕拉雷尔方法加速波浪-结构相互作用求解器

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-07-13 DOI: 10.1016/j.enganabound.2024.105870

Yohan Poirier , Julien Salomon , Aurélien Babarit , Pierre Ferrant , Guillaume Ducrozet

{"title":"Acceleration of a wave-structure interaction solver by the Parareal method","authors":"Yohan Poirier , Julien Salomon , Aurélien Babarit , Pierre Ferrant , Guillaume Ducrozet","doi":"10.1016/j.enganabound.2024.105870","DOIUrl":"https://doi.org/10.1016/j.enganabound.2024.105870","url":null,"abstract":"<div><p>Potential flow theory-based solvers are commonly used in ocean engineering to investigate the interactions between ocean waves and floating bodies. Depending on assumptions, several methods have been proposed. Among them, the Weak-Scatterer method is an interesting trade-off in the sense that this approach is not limited in theory by the small wave amplitudes and small body motions assumptions of linear methods. Moreover, this approach is in practice more stable than the fully non-linear methods. An implementation of the Weak-Scatterer method is the WS-CN code (Letournel, 2015; Chauvigné, 2016; Wuillaume, 2019).</p><p>The computational time of the WS-CN code which is considered in the present study is relatively long for engineering purposes. In order to reduce it, the present paper presents an implementation of the Parareal method in the WS-CN code. The Parareal method is an algorithm for parallelizing a simulation in time that can accelerate the complete simulation (Lions, 2001) . This is a key difference in comparison to other acceleration techniques which have been studied in the literature (e.g. the Fast Multipole Method (FMM), the precorrected Fast Fourier Transform (pFFT) method, <span><math><mo>…</mo></math></span> ). To the authors’ knowledge, the present study is the first to couple the Parareal method to a potential flow theory-based wave-structure interaction solver. It is shown that the method can significantly reduce the computational time for small wave steepness, but that the performance decreases rapidly with increasing steepness.</p></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S095579972400345X/pdfft?md5=7329aaa927e9ccdc589833693bf5cf2e&pid=1-s2.0-S095579972400345X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141606766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Alternating generalized projection method applied to phase-only synthesis process of satellite reflectarray antennas 交替广义投影法应用于卫星反射阵列天线的纯相位合成过程

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-07-13 DOI: 10.1016/j.enganabound.2024.105871

Rafael Florencio , René Escalante

引用次数: 0