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1. Slope stability analysis using elastic finite element stress fields

Author:
Liu, Shiyi; Su, Zhenning; Li, Ming; Shao, Longtan
Source:
Engineering geology 2020 v.273 pp. 105673
ISSN:
0013-7952
Subject:
finite element analysis,   etc   ; models; safety factor; soil;     Show all 4 Subjects
Abstract:
... The finite element limit equilibrium method (FELEM) is increasingly used in slope stability analyses. The greatest advantage of the FELEM is its time-saving analysis process, which does not require the iterative strength reduction process used in the strength reduction finite element method. The conventional FELEM calculates stresses using the finite element method with the elastic-perfectly plast ...
DOI:
10.1016/j.enggeo.2020.105673

2. Geometrically nonlinear regularized extended finite element analysis of compression after impact in composite laminates

Author:
McQuien, Jeffrey S.; Hoos, Kevin H.; Ferguson, Lauren A.; Iarve, Endel V.; Mollenhauer, David H.
Source:
Composites 2020 v.134 pp. 105907
ISSN:
1359-835X
Subject:
finite element analysis,   etc   ; composite materials; delamination; prediction;     Show all 4 Subjects
Abstract:
... The geometrically nonlinear Rx-FEM formulation was applied to compression after impact (CAI) strength prediction. The impact-induced damage including permanent out-of-plane dent, delaminations, and matrix cracks were included into the analysis domain prior to application of compressive loading. While the inclusion of the dent and delaminations was based directly on provided information, impact-ind ...
DOI:
10.1016/j.compositesa.2020.105907

3. Designing an Adhesive Pillar Shape with Deep Learning-Based Optimization

Author:
Kim, Yongtae; Yang, Charles; Kim, Youngsoo; Gu, Grace X.; Ryu, Seunghwa
Source:
ACS applied materials & interfaces 2020 v.12 no.21 pp. 24458-24465
ISSN:
1944-8252
Subject:
finite element analysis,   etc   ; data collection; neural networks;     Show all 3 Subjects
Abstract:
... Over the past decades, significant effort has been made to improve the adhesive properties of adhesive pillars, by searching for pillar shapes with optimized interfacial stress distribution. However, the shape optimizations in the previous studies are conducted by considering specific pillar forms with a few parameters, hence with limited design space. In this study, we present a framework to find ...
DOI:
10.1021/acsami.0c04123

4. Evaluation of an advanced powder-die frictional model

Author:
Staf, Hjalmar; Larsson, Per-Lennart
Source:
Powder technology 2020 v.363 pp. 569-574
ISSN:
0032-5910
Subject:
finite element analysis,   etc   ; cutting; friction; models; pressing;     Show all 5 Subjects
Abstract:
... It is known that the shape of a cutting insert blank, after pressing and sintering, can be predicted with finite element (FE) simulations. It is also known that such simulations have the potential to save costs and time when used for press tool compensation. However, in such simulations (and in a real situation), the frictional behaviour has a great influence on the results. Therefore, in this stu ...
DOI:
10.1016/j.powtec.2020.01.048

5. Finite element modelling for fruit stress analysis - A review

Author:
Zulkifli, Nurazwin; Hashim, Norhashila; Harith, Hazreen Haizi; Mohamad Shukery, Mohamad Firdza
Source:
Trends in food science & technology 2020 v.97 pp. 29-37
ISSN:
0924-2244
Subject:
finite element analysis,   etc   ; deformation; equations; fruits; prototypes;     Show all 5 Subjects
Abstract:
... A deep understanding of the motion and the intensities of forces endured by the fruits overtime during the various handling processes is necessary if improvements are to be made in the handling systems or related tools. The finite element method (FEM) has been used to investigate the effect of mechanical loading on fruit before developing a prototype of the intended design. Simulation tests were p ...
DOI:
10.1016/j.tifs.2019.12.029

6. Numerical investigation of erosion characteristics of multiple-particle impact on ductile material with patterned surfaces

Author:
Zhao, Xuebin; Tang, G.H.; Liu, Zhigang; Zhang, Yong-Wei
Source:
Powder technology 2020 v.362 pp. 527-538
ISSN:
0032-5910
Subject:
finite element analysis,   etc   ; alloys; lips; models;     Show all 4 Subjects
Abstract:
... Using Ti-6Al-4V alloy as the target substrate and rigid balls as the incident particles, we studied the anti-erosion behavior of the substrate with varying surface patterns collided by multiple particles with finite element method. The overlapping impact and secondary impact were considered in the model. The results reveal that the patterned surfaces may increase or decrease the mass loss, which i ...
DOI:
10.1016/j.powtec.2019.12.005

7. Meshfree radial point collocation-based coupled flow and transport model for simulation of multispecies linked first order reactions

Author:
Anshuman, Aatish; Eldho, T.I.
Source:
Journal of contaminant hydrology 2020 v.229 pp. 103582
ISSN:
0169-7722
Subject:
finite element analysis,   etc   ; case studies; groundwater; models;     Show all 4 Subjects
Abstract:
... Mesh/grid-based methods such as the Finite element method (FEM) and Finite difference method (FDM) are extensively used for simulation of contaminant species transport in groundwater. However, these methods in their standard form are susceptible to instabilities such as oscillations and numerical dispersion in the solution. Further, due to the use of mesh/grid, these methods are also computational ...
DOI:
10.1016/j.jconhyd.2019.103582

8. An efficient 3D DEM-FEM contact detection algorithm for tire-sand interaction

Author:
Yang, Peng; Zang, Mengyan; Zeng, Haiyang
Source:
Powder technology 2020 v.360 pp. 1102-1116
ISSN:
0032-5910
Subject:
finite element analysis,   etc   ; algorithms; models; powders; tires;     Show all 5 Subjects
Abstract:
... The combined discrete-finite element method is often used for dynamic interaction simulations, in which contact detection is the most time-consuming but critical constituent. Therefore, it is significant to develop an accurate and efficient contact detection algorithm. In this study, an efficient contact detection algorithm termed TSC (tire-sand contact) is developed for dealing with the interacti ...
DOI:
10.1016/j.powtec.2019.10.069

9. A new simplified method for calculating consolidation settlement of multi-layer soft soils with creep under multi-stage ramp loading

Author:
Feng, Wei-Qiang; Yin, Jian-Hua; Chen, Wen-Bo; Tan, Dao-Yuan; Wu, Pei-Chen
Source:
Engineering geology 2020 v.264 pp. 105322
ISSN:
0013-7952
Subject:
finite element analysis,   etc   ; models; soil profiles;     Show all 3 Subjects
Abstract:
... In normal practice, a multi-stage surcharge loading is applied gradually to achieve a certain strength of soft soils, and thus it is important to study the settlement of soft soils under multi-stage ramp loading. In this study, a new simplified method is developed to calculate the settlement of multi-layer soft soils exhibiting creep subjected to the multi-stage loading under a one-dimensional str ...
DOI:
10.1016/j.enggeo.2019.105322

10. A Multi Record Based Artificial Near Fault Ground Motion Generation Method

Author:
Liu, Zhen; Zhang, Shibo; Zhang, Zhe
Source:
MethodsX 2020 v.7 pp. 100725
ISSN:
2215-0161
Subject:
finite element analysis,   etc   ; earthquakes; vibration; wavelet;     Show all 4 Subjects
Abstract:
... Near fault ground motion is a kind of ground motion with great damage, which is difficult to simulate. The amplitude and frequency functions of near fault ground motion vary greatly with time. When a single ground motion is used for simulation, large errors can easily occur. A method for generating near fault ground motion based on a set of actual ground motions is presented. In order to evaluate ...
DOI:
10.1016/j.mex.2019.10.036

11. Ferro-hydrodynamic interactions between ferrofluid droplet pairs in simple shear flows

Author:
Hassan, Md Rifat; Wang, Cheng
Source:
Colloids and surfaces 2020 v.602 pp. 124906
ISSN:
0927-7757
Subject:
finite element analysis,   etc   ; algorithms; droplets; magnetic fields; mathematical models;     Show all 5 Subjects
Abstract:
... A numerical investigation on the interactions between a pair of equal-sized ferrofluid droplets in a simple shear flow subjected to uniform magnetic fields is carried out in this paper. Our numerical model utilizes a finite element method based level set algorithm to trace the topological changes along the droplet interface in two phase flows by coupling the flow and magnetic fields. Systematic nu ...
DOI:
10.1016/j.colsurfa.2020.124906

12. Three-dimensional analyses of cells’ positioning on the quadrupole-electrode microfluid chip considering the coupling effect of nDEP, ACEO, and ETF

Author:
Ji, Jianlong; Zhang, Jingjing; Wang, Jingxiao; Huang, Qing; Jiang, Xiaoning; Zhang, Wendong; Sang, Shengbo; Guo, Xiaoliang; Li, Shanshan
Source:
Biosensors & bioelectronics 2020 v.165 pp. 112398
ISSN:
0956-5663
Subject:
finite element analysis,   etc   ; biosensors; dielectric spectroscopy; dielectrophoresis; electroosmosis; kinematics; models;     Show all 7 Subjects
Abstract:
... Microfluidic chips integrated with negative dielectrophoresis (nDEP) and electrochemical impedance spectroscopy have wide applications in cell sensing. Accurate analysis of the kinematics and dynamics of cells in the nDEP process is crucial to improve the positioning accuracy and electric cell-substrate impedance sensing (ECIS) performance. This paper reports employing the three-dimensional (3D) f ...
DOI:
10.1016/j.bios.2020.112398

13. Nanoparticle impact on discharging of PCM through a thermal storage involving numerical modeling for heat transfer and irreversibility

Author:
Hajizadeh, Mohammed Reza; Alsabery, Ammar I.; Sheremet, Mikhail A.; Kumar, Rakesh; Li, Z.; Bach, Quang-Vu
Source:
Powder technology 2020 v.376 pp. 424-437
ISSN:
0032-5910
Subject:
finite element analysis,   etc   ; cold; heat transfer; mathematical models; nanoparticles; solidification;     Show all 6 Subjects
Abstract:
... Enclosure with two sides' cold flows has been considered as storage unit to investigate solidification of water. To reach greater the rate of phase changing, nanomaterial were dispersed and different shapes of nano powder were investigated. Adaptive grid with automatic time step was employed by means of finite element method. Findings were illustrated in term of profiles and contours as well as ne ...
DOI:
10.1016/j.powtec.2020.08.031

14. Seismic response analysis of a bedding rock slope based on the time-frequency joint analysis method: a case study from the middle reach of the Jinsha River, China

Author:
Song, Danqing; Chen, Zhuo; Ke, Yutian; Nie, Wen
Source:
Engineering geology 2020 v.274 pp. 105731
ISSN:
0013-7952
Subject:
finite element analysis,   etc   ; deformation; earthquakes; geophysics; landslides; topography;     Show all 6 Subjects
Abstract:
... To investigate the seismic response of a bedding rock slope, a time-frequency joint analysis method was proposed using the finite element method (FEM) based on the time, frequency, and time-frequency domains. According to the time-frequency joint analysis, the results show that the topographic and geological conditions have great impacts on the dynamic response characteristics of the slope. An obv ...
DOI:
10.1016/j.enggeo.2020.105731

15. Experimental characterization and modeling of the mechanical behavior of brittle 3D printed food

Author:
Jonkers, N.; van Dommelen, J.A.W.; Geers, M.G.D.
Source:
Journal of food engineering 2020 v.278 pp. 109941
ISSN:
0260-8774
Subject:
finite element analysis,   etc   ; brittleness; deformation; foods; three-dimensional printing;     Show all 5 Subjects
Abstract:
... 3D printing is a unique manufacturing method that enables food customization. The development of a modeling framework to predict mechanical properties of food products is an invaluable tool in such a customization process. To set up this framework, 3D printed samples are mechanically characterized by means of compression testing. The observed phenomena are captured in a constitutive model that des ...
DOI:
10.1016/j.jfoodeng.2020.109941

16. An accurate strategy to retrieve multiple source emissions in the atmosphere

Author:
Albani, Roseane A.S.; Albani, Vinicius V.L.
Source:
Atmospheric environment 2020 v.233 pp. 117579
ISSN:
1352-2310
Subject:
finite element analysis,   etc   ; algorithms; atmospheric chemistry; emissions; field experimentation; models;     Show all 6 Subjects
Abstract:
... We propose a new methodology to retrieve multiple point emission sources in the atmosphere. To allow more realistic modelling, the dispersion problem is solved by a stabilized finite element formulation. The simultaneous estimation of the source strengths, their locations and the total number of sources is made employing Tikhonov-type regularization, with a composite data misfit function. The corr ...
DOI:
10.1016/j.atmosenv.2020.117579

17. Enhancement of the low-frequency acoustic energy harvesting with auxetic resonators

Author:
Eghbali, Pejman; Younesian, Davood; Farhangdoust, Saman
Source:
Applied energy 2020 v.270 pp. 115217
ISSN:
0306-2619
Subject:
finite element analysis,   etc   ; acoustics; electrical properties; energy; models;     Show all 5 Subjects
Abstract:
... A new concept to enhance efficiency of the acoustic energy harvesting is presented and experimentally tested in this paper. An auxetic latticed resonator backed by an acoustic rectangular tube is proposed for this purpose. The concept is tested and proved by comparing the extracted power against performance of a conventional cantilever resonator at resonant-resonant condition. The problem is model ...
DOI:
10.1016/j.apenergy.2020.115217

18. Evaluation of bending performance of carbon fiber-reinforced eucalyptus/poplar composite plywood by digital image correlation and FEA analysis

Author:
Guan, Mingjie; Liu, Yuansong; Zhang, Zhiwei; Huang, Zhiwei
Source:
Journal of materials science 2020 v.55 no.19 pp. 8388-8402
ISSN:
0022-2461
Subject:
finite element analysis,   etc   ; Eucalyptus; Populus; carbon; digital images; plywood; prediction;     Show all 7 Subjects
Abstract:
... The failure of composite materials during bending is an issue that must be considered in the performance evaluation of structural materials. Strong–weak interlaminated composites are particularly prone to weak interfaces. In this study, the digital image correlation (DIC) method is used to detect the strain distribution of high-performance carbon fiber-reinforced eucalyptus/poplar composite plywoo ...
DOI:
10.1007/s10853-020-04584-9

19. Insight into indentation-induced plastic flow in austenitic stainless steel

Author:
Xia, Wenzhen; Dehm, Gerhard; Brinckmann, Steffen
Source:
Journal of materials science 2020 v.55 no.21 pp. 9095-9108
ISSN:
0022-2461
Subject:
finite element analysis,   etc   ; plasticity; roughness; shear stress; stainless steel;     Show all 5 Subjects
Abstract:
... The indentation-induced plasticity and roughness have been investigated intensively by experiments and simulations during the last decades. However, the precise mechanisms of how dislocation flow leads to pile-up formation are still not completely understood, although this is one of the initial steps causing surface roughening in tribological contacts at low loads. In this work, [Formula: see text ...
DOI:
10.1007/s10853-020-04646-y

20. Intimate contact development during laser assisted fiber placement: Microstructure and effect of process parameters

Author:
Çelik, Ozan; Peeters, Daniël; Dransfeld, Clemens; Teuwen, Julie
Source:
Composites 2020 v.134 pp. 105888
ISSN:
1359-835X
Subject:
finite element analysis,   etc   ; composite materials; microstructure; models; temperature;     Show all 5 Subjects
Abstract:
... Intimate contact development under LAFP-specific thermal and mechanical boundary conditions/interactions and the effect of process parameters are investigated. One-layer, unidirectional strips of CF/PEKK material were placed with different process parameters on a flat tool surface to create different intimate contact conditions. The concept of effective intimate contact, which is based on the resi ...
DOI:
10.1016/j.compositesa.2020.105888