Computational Particle Mechanics最新文献_第3页

Two-scale concurrent simulations for crack propagation using FEM–DEM bridging coupling 利用 FEM-DEM 桥接耦合对裂纹扩展进行双尺度并行模拟

IF 2.8 3区工程技术

Computational Particle Mechanics Pub Date : 2024-07-27 DOI: 10.1007/s40571-024-00788-x

Manon Voisin-Leprince, Joaquin Garcia-Suarez, Guillaume Anciaux, Jean-François Molinari

{"title":"Two-scale concurrent simulations for crack propagation using FEM–DEM bridging coupling","authors":"Manon Voisin-Leprince, Joaquin Garcia-Suarez, Guillaume Anciaux, Jean-François Molinari","doi":"10.1007/s40571-024-00788-x","DOIUrl":"10.1007/s40571-024-00788-x","url":null,"abstract":"<div>The Discrete element method (DEM) is a robust numerical tool for simulating crack propagation and wear in granular materials. However, the computational cost associated with DEM hinders its applicability to large domains. To address this limitation, we employ DEM to model regions experiencing crack propagation and wear, and utilize the finite element method (FEM) to model regions experiencing small deformation, thus reducing the computational burden. The two domains are linked using a FEM–DEM coupling, which considers an overlapping region where the deformation of the two domains is reconciled. We employ a “strong coupling” formulation, in which each DEM particle in the overlapping region is constrained to an equivalent position obtained by nodal interpolation in the finite element. While the coupling method has been proved capable of handling propagation of small-amplitude waves between domains, we examine in this paper its accuracy to efficiently model for material failure events. We investigate two cases of material failure in the DEM region: the first one involves mode I crack propagation, and the second one focuses on rough surfaces’ shearing leading to debris creation. For each, we consider several DEM domain sizes, representing different distances between the coupling region and the DEM undergoing inelasticity and fracture. The accuracy of the coupling approach is evaluated by comparing it with a pure DEM simulation, and the results demonstrate its effectiveness in accurately capturing the behavior of the pure DEM, regardless of the placement of the coupling region.\u0000</div>","PeriodicalId":524,"journal":{"name":"Computational Particle Mechanics","volume":"11 5","pages":"2235 - 2243"},"PeriodicalIF":2.8,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40571-024-00788-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141781593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

In silico design-space analysis of a novel tablet coating process using advanced modeling 利用先进建模对新型片剂包衣工艺进行硅设计空间分析

IF 3.3 3区工程技术

Computational Particle Mechanics Pub Date : 2024-07-26 DOI: 10.1007/s40571-024-00804-0

Peter Boehling, Dalibor Jajcevic, Frederik Detobel, James Holman, Laura Bower, Matthew Metzger, Johannes G. Khinast

{"title":"In silico design-space analysis of a novel tablet coating process using advanced modeling","authors":"Peter Boehling, Dalibor Jajcevic, Frederik Detobel, James Holman, Laura Bower, Matthew Metzger, Johannes G. Khinast","doi":"10.1007/s40571-024-00804-0","DOIUrl":"https://doi.org/10.1007/s40571-024-00804-0","url":null,"abstract":"Continuous manufacturing has been increasingly applied in the pharmaceutical industry. The advantages are a more flexible process, decreased costs, and opportunities for better quality control. However, performing experiments is still the way to go when developing a new process but most experiments offer only limited process insight. As part of its ConsiGma® continuous processing lines, GEA has developed a semi-continuous tablet coater with unique design and process mechanics. Simulations enable a deeper understanding of the process mechanics and allow the transition from an empirical process to a mechanistic understanding of the individual process units. We used simulations to improve the understanding of the ConsiGma® tablet coater through a digital multivariate design study. Our simulations demonstrate how the mechanical and material properties influence the tablet bed behavior. We tracked the effects of thermodynamic inputs on the coating quality via the tablet temperature and moisture. These results may be helpful in the future development of coating processes using limited experimental data.","PeriodicalId":524,"journal":{"name":"Computational Particle Mechanics","volume":"37 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141781591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Accurate prediction of generalized oil–water interface evolution with a novel multiphase SPH scheme 利用新型多相 SPH 方案精确预测广义油水界面演变

IF 3.3 3区工程技术

Computational Particle Mechanics Pub Date : 2024-07-26 DOI: 10.1007/s40571-024-00800-4

Chun-Yao Zheng, Fei-Guo Chen, Lin Zhang, Yuan Zhou

{"title":"Accurate prediction of generalized oil–water interface evolution with a novel multiphase SPH scheme","authors":"Chun-Yao Zheng, Fei-Guo Chen, Lin Zhang, Yuan Zhou","doi":"10.1007/s40571-024-00800-4","DOIUrl":"https://doi.org/10.1007/s40571-024-00800-4","url":null,"abstract":"In multiphase SPH method, accurate prediction of oil–water interface is a key, and a major source of failure is due to the nonphysical pressure oscillation. Then in this work, a novel multiphase SPH scheme is designed to solve this problem by integrating several treatments of pressure oscillation together, when the generalized oil–water two-phase flows are simulated. These treatments are: (1) the revised diffusive term which is added in the continuity equation by replacing the original density with the density increment; (2) the corrected density re-initialization during whose implementation different-phase fluid particles must be converted into the imaginary same-phase ones; (3) the particle shifting technique to distribute particles more uniformly. Through the simulation of several generalized oil–water two-phase flow problems as well as comparison with reference solutions, it is validated that our novel SPH scheme is stable, accurate and with less dissipation, and can avoid particle penetration near interface. Finally, a new and more complex generalized oil–water two-phase flow problem is designed and simulated to further demonstrate the above advantages of our SPH scheme.","PeriodicalId":524,"journal":{"name":"Computational Particle Mechanics","volume":"27 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141781592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

The virtual stress boundary method to impose nonconforming Neumann boundary conditions in the material point method 虚拟应力边界法在材料点法中施加不符合新曼边界条件

IF 3.3 3区工程技术

Computational Particle Mechanics Pub Date : 2024-07-25 DOI: 10.1007/s40571-024-00793-0

Joel Given, Yong Liang, Zhixin Zeng, Xiong Zhang, Kenichi Soga

{"title":"The virtual stress boundary method to impose nonconforming Neumann boundary conditions in the material point method","authors":"Joel Given, Yong Liang, Zhixin Zeng, Xiong Zhang, Kenichi Soga","doi":"10.1007/s40571-024-00793-0","DOIUrl":"https://doi.org/10.1007/s40571-024-00793-0","url":null,"abstract":"The material point method (MPM) is a popular and powerful tool for simulating large deformation problems. The hybrid Eulerian–Lagrangian nature of the MPM means that the Lagrangian material points and the Eulerian background mesh are often nonconforming. Once the material and mesh boundaries become misaligned, imposing boundary conditions, such as Neumann boundary conditions (i.e., traction), becomes a challenge. The recently developed virtual stress boundary (VSB) method allows for imposing nonconforming Neumann boundary conditions without explicit knowledge of the boundary position. This is achieved through a problem transformation where the original boundary traction problem is replaced by an equivalent problem featuring a virtual stress field. This equivalent problem results in updated governing equations which are ultimately solved using a combination of particle-wise and cell-wise quadrature. In the current work, a modification to the VSB method is proposed to eliminate the need for cell-wise quadrature. Despite removing cell-wise quadrature, the modified VSB method maintains the accuracy observed in the original approach. Several numerical examples, including 1D and 2D benchmark problems, as well as a 3D demonstration problem, are presented to investigate the accuracy and illustrate the capability of the modified VSB method. Mesh refinement studies are included to show the method’s good convergence behavior.","PeriodicalId":524,"journal":{"name":"Computational Particle Mechanics","volume":"48 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141781594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Effect of particle diameter and void fraction on gas–solid two-phase flow: a numerical investigation using the Eulerian–Eulerian approach 颗粒直径和空隙率对气固两相流的影响：利用欧拉-欧拉方法进行的数值研究

IF 3.3 3区工程技术

Computational Particle Mechanics Pub Date : 2024-07-23 DOI: 10.1007/s40571-024-00798-9

Adel M. Elreafay, Khaled M. Salem, Ramzy M. Abumandour, A. S. Dawood, Saeed Al Nuaimi

{"title":"Effect of particle diameter and void fraction on gas–solid two-phase flow: a numerical investigation using the Eulerian–Eulerian approach","authors":"Adel M. Elreafay, Khaled M. Salem, Ramzy M. Abumandour, A. S. Dawood, Saeed Al Nuaimi","doi":"10.1007/s40571-024-00798-9","DOIUrl":"https://doi.org/10.1007/s40571-024-00798-9","url":null,"abstract":"Sudden expansion pipes are crucial in fluid dynamics for studying flow behavior, turbulence, and pressure distribution in various systems. This study focuses on investigating the behavior of a two-phase flow, specifically a gas–solid turbulent flow, in a sudden expansion. The Eulerian–Eulerian approach is employed to model the flow characteristics. The Eulerian–Eulerian approach treats both phases (gas and solid) as separate continua, and their interactions are described using conservation equations for mass, momentum, and energy. The study aims to understand the complex phenomena occurring in the flow, such as particle dispersion, turbulence modulation, and pressure drop. The governing equations are solved using house developed code called FORTRAN, a widely used programming language in scientific and engineering simulations. The results of this study will provide valuable insights into the behavior of gas–solid two-phase flows in sudden expansions, which have important applications in various industries, including chemical engineering, energy systems, and environmental engineering. A parametric study of the impact of particles diameters (20, 120, 220, 500 µm), the solid volume loading ratios ((0.005, 0.008, 0.01)) and area ratios (2.25, 5.76, 9) effect of sudden expansion on the streamlines, local skin friction, pressure, velocity, turbulent kinetic energy, and separation zone.","PeriodicalId":524,"journal":{"name":"Computational Particle Mechanics","volume":"131 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141781599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Quantitative analysis of grain size effect on tensile mechanical behavior of granite based on multi-level force chain networks 基于多级力链网络的晶粒尺寸对花岗岩拉伸力学行为影响的定量分析

IF 2.8 3区工程技术

Computational Particle Mechanics Pub Date : 2024-07-16 DOI: 10.1007/s40571-024-00790-3

Wei Li, Liyuan Yu, Tao Zhang, Haijian Su, Xianzhen Mi, Doudou Fan, Bao Jin

{"title":"Quantitative analysis of grain size effect on tensile mechanical behavior of granite based on multi-level force chain networks","authors":"Wei Li, Liyuan Yu, Tao Zhang, Haijian Su, Xianzhen Mi, Doudou Fan, Bao Jin","doi":"10.1007/s40571-024-00790-3","DOIUrl":"10.1007/s40571-024-00790-3","url":null,"abstract":"<div>A three-dimensional grain-based model based on the discrete element method is proposed for reconstructing the filling and grouping of minerals in granite, then a batch of numerical disc specimens with different grain sizes RG are subjected to the Brazilian splitting test. In addition, the force chain networks in the numerical samples are subjected to multi-level classification and quantitative analysis, and the grain size effect on the tensile mechanical behavior of granite is discussed from the perspective of force chain networks. The results show that the mechanical properties and micro-cracking behavior of fine- and coarse-grained samples obtained experimentally and from simulation are consistent, including the load–displacement curve, the peak load, the failure displacement, and the proportion of intergranular/transgranular cracks. Therefore, the reliability of the model is verified. As RG increases, the number of intragranular contacts increases, while the number of intergranular contacts decreases. The bearing capacity and deformation resistance of the samples increase. As RG increases, both the number and sum of force chains for intragranular structures increase gradually, while these two parameters for intergranular structures decrease; meanwhile, the average values for intragranular and intergranular structures increase with increasing RG. As RG continues to increase, the number of contacts within mineral grains capable of withstanding external loads increases, forming a robust force chain network to bear external loads. It becomes challenging for a low-level load to break the contacts within the mineral, leading to an increase in the sample’s load-bearing capacity.</div>","PeriodicalId":524,"journal":{"name":"Computational Particle Mechanics","volume":"11 5","pages":"2245 - 2266"},"PeriodicalIF":2.8,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141642315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Solving nonlinear Fisher–Kolmogorov–Petrovsky–Piskunov equation using two meshless methods 用两种无网格方法求解非线性 Fisher-Kolmogorov-Petrovsky-Piskunov 方程

IF 2.8 3区工程技术

Computational Particle Mechanics Pub Date : 2024-07-16 DOI: 10.1007/s40571-024-00794-z

J. J. Benito, A. García, M. Negreanu, F. Ureña, A. M. Vargas

引用次数: 0

Investigation of the parallel gradation method based on response of ballast penetration into subgrade soil by discrete element method 基于离散元法对路基土中压载物渗透响应的平行分级法研究

IF 3.3 3区工程技术

Computational Particle Mechanics Pub Date : 2024-07-11 DOI: 10.1007/s40571-024-00795-y

Jie Zhang, Rusong Nie, Yongchang Tan, MaoTong Huang, Yafeng Li, Yipeng Guo

{"title":"Investigation of the parallel gradation method based on response of ballast penetration into subgrade soil by discrete element method","authors":"Jie Zhang, Rusong Nie, Yongchang Tan, MaoTong Huang, Yafeng Li, Yipeng Guo","doi":"10.1007/s40571-024-00795-y","DOIUrl":"https://doi.org/10.1007/s40571-024-00795-y","url":null,"abstract":"Treating ballast and subgrade soil as an integrated unit for sampling and loading has proven to be an effective method for investigating the interaction between ballast and subgrade soil. Given that direct testing of specimens containing large ballast is constrained by the capabilities of standard laboratory equipment, adopting a model material of smaller size is recommended. Parallel gradation method is widely used for this purpose. This study performed an evaluation of parallel gradation method based on the response of ballast penetration into subgrade soil. Discrete element models were developed to simulate the penetration of crushed ballast, featuring three different parallel gradations, into subgrade soil. On this basis, dynamic triaxial simulations were conducted on these models. By comparing the macroscopic and mesoscopic mechanical characteristics at different scaling ratio, the applicability of the parallel gradation method for assessing ballast penetration into subgrade soil was evaluated. At the macroscopic scale, the scaling ratio of crushed ballast significantly influences the axial, volumetric, and lateral deformations observed during penetration into subgrade soil. Specifically, a smaller average grain size of ballast correlates with reduced deformations in these specimens. The penetration of crushed ballast into subgrade soil significantly increases the porosity of subgrade soil, particularly at the interface between ballast and subgrade. This increase in porosity is more pronounced with larger average grain sizes of ballast. At the mesoscopic scale, larger average grain sizes of ballast lead to more localized high contact forces and more significant stress concentrations. The parallel gradation method substantially affects the mechanical properties of ballast penetration into subgrade soil, at both macroscopic and mesoscopic scales. Therefore, a cautious approach is necessary when relying on this method for precise assessments.","PeriodicalId":524,"journal":{"name":"Computational Particle Mechanics","volume":"71 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141587783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Discrete element analysis of jointed rock mass impact on rigid baffle structure 节理岩块冲击刚性挡板结构的离散元素分析

IF 3.3 3区工程技术

Computational Particle Mechanics Pub Date : 2024-07-10 DOI: 10.1007/s40571-024-00797-w

Shiqi Liu, Zhichao Cheng, Huanling Wang, Yong Zhou, Wei Li

{"title":"Discrete element analysis of jointed rock mass impact on rigid baffle structure","authors":"Shiqi Liu, Zhichao Cheng, Huanling Wang, Yong Zhou, Wei Li","doi":"10.1007/s40571-024-00797-w","DOIUrl":"https://doi.org/10.1007/s40571-024-00797-w","url":null,"abstract":"Rockslide is a hot topic and universal phenomenon in the mountainous regions prone to geological hazards, which may pose substantial threats to property. The discrete element method (DEM) has been widely used to simulate the movement process of rockslide and avalanche. However, the rockslide involving jointed rock mass needs more adequate study to evaluate the safety implications effectively. In this paper, a series of DEM tests are conducted to study the movement and fragmentation of blocks with varying structure. The results show that at sliding angle of 45°, horizontal velocity reduces more slowly than vertical velocity because the particles move in a forward direction after impacting the bottom wall. The existence of a baffle structure limits sliding particle movement effectively and enhances the arch effect through the distribution of contact force chains. The number of joints, slope angle and sliding distance have considerable impact on bond breaking percentages and the displacement of the rock mass center. All bond break percentages are close to 90%, and number of joints and slope angle have little impact on the displacement of the rock mass center. This study can guide landslide disaster prevention.","PeriodicalId":524,"journal":{"name":"Computational Particle Mechanics","volume":"51 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141587852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Modeling and mitigation of vortex formation in ejector deep hole drilling with smoothed particle hydrodynamics 利用平滑颗粒流体力学模拟和缓解喷射器深孔钻进过程中的涡流形成

IF 2.8 3区工程技术

Computational Particle Mechanics Pub Date : 2024-07-03 DOI: 10.1007/s40571-024-00789-w

Andreas Baumann, Julian Frederic Gerken, Daniel Sollich, Nuwan Rupasinghe, Dirk Biermann, Peter Eberhard

{"title":"Modeling and mitigation of vortex formation in ejector deep hole drilling with smoothed particle hydrodynamics","authors":"Andreas Baumann, Julian Frederic Gerken, Daniel Sollich, Nuwan Rupasinghe, Dirk Biermann, Peter Eberhard","doi":"10.1007/s40571-024-00789-w","DOIUrl":"10.1007/s40571-024-00789-w","url":null,"abstract":"<div>Ejector deep hole drilling achieves high-quality boreholes in production processes. High feed rates are applied to ensure a high productivity level, requiring reliable chip removal from the cutting zone for a stable process. Therefore, a constant metalworking fluid flow under high volume flow rates or high pressure is required. Experimental results show a vortex formation at the outer cutting edge. This vortex can lead to delayed chip removal from the cutting zone, and ultimately, it can lead to chip clogging and result in drill breakage due to increased torque. This paper investigates modified drill head designs using the smoothed particle hydrodynamics method. The investigated modifications include various designs of the chip mouth covering. Besides graphical analysis based on flow visualizations, flow meters are placed at the tool’s head to evaluate the impact of the modifications on the flow rate and possible increased resistance and relocation of the fluid flow from the outer cutting edge to other parts of the tool. The simulation results for the reference design show the experimentally observed vortex formation, validating the simulation model. By adding the tool’s rotation in the SPH simulation, which is not included in the experiments for observation reasons, the vortex formation is positively influenced. In addition, some designs show promising results to further mitigate the vortex formation while maintaining a sufficient fluid flow around the cutting edges.\u0000</div>","PeriodicalId":524,"journal":{"name":"Computational Particle Mechanics","volume":"11 5","pages":"1851 - 1862"},"PeriodicalIF":2.8,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40571-024-00789-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141529246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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