Pub Date : 2021-11-02DOI: 10.1080/15502287.2021.1958644
Nuha Hussein Ebrahim, M. Awang
We, the Editors and Publisher of International Journal for Computational Methods in Engineering Science and Mechanics have retracted the following article: Nuha Hussein Ebrahim & Mariyamni Awang (2016) Numerical Solution for Cuttings’ Transport in Inclined and Highly Inclined Drilling Annuli, International Journal for Computational Methods in Engineering Science and Mechanics, DOI: 10.1080/15502287.2016.1247120 Publication of the paper has been stalled since 2016 due to pending corrections. We reached out to the authors multiple times regarding these corrections but have received no reply. We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions. The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted”.
{"title":"Retraction: Numerical Solution for Cuttings' Transport in Inclined and Highly Inclined Drilling Annuli","authors":"Nuha Hussein Ebrahim, M. Awang","doi":"10.1080/15502287.2021.1958644","DOIUrl":"https://doi.org/10.1080/15502287.2021.1958644","url":null,"abstract":"We, the Editors and Publisher of International Journal for Computational Methods in Engineering Science and Mechanics have retracted the following article: Nuha Hussein Ebrahim & Mariyamni Awang (2016) Numerical Solution for Cuttings’ Transport in Inclined and Highly Inclined Drilling Annuli, International Journal for Computational Methods in Engineering Science and Mechanics, DOI: 10.1080/15502287.2016.1247120 Publication of the paper has been stalled since 2016 due to pending corrections. We reached out to the authors multiple times regarding these corrections but have received no reply. We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions. The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted”.","PeriodicalId":315058,"journal":{"name":"International Journal for Computational Methods in Engineering Science and Mechanics","volume":"2018 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124049974","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}
Pub Date : 2021-11-02DOI: 10.1080/15502287.2021.1959245
Adithya Challapalli
We, the Author, Editor and Publisher of International Journal for Computational Methods in Engineering Science and Mechanics, have retracted the following article: Adithya Challapalli, Continuum Model for Effective Properties of Orthotropic Octet-truss Lattice through Additive Manufacturing, International Journal for Computational Methods in Engineering Science and Mechanics, 21(1) 2020, 1–11, DOI: 10.1080/15502287.2020.1711829 The author has requested a retraction of the article due to discrepancies they found in the numerical analysis, which is the core of this paper. The author has not been able to reproduce the same results. We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions. The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted”.
{"title":"Retraction: Continuum model for effective properties of orthotropic octet-truss lattice through additive manufacturing","authors":"Adithya Challapalli","doi":"10.1080/15502287.2021.1959245","DOIUrl":"https://doi.org/10.1080/15502287.2021.1959245","url":null,"abstract":"We, the Author, Editor and Publisher of International Journal for Computational Methods in Engineering Science and Mechanics, have retracted the following article: Adithya Challapalli, Continuum Model for Effective Properties of Orthotropic Octet-truss Lattice through Additive Manufacturing, International Journal for Computational Methods in Engineering Science and Mechanics, 21(1) 2020, 1–11, DOI: 10.1080/15502287.2020.1711829 The author has requested a retraction of the article due to discrepancies they found in the numerical analysis, which is the core of this paper. The author has not been able to reproduce the same results. We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions. The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted”.","PeriodicalId":315058,"journal":{"name":"International Journal for Computational Methods in Engineering Science and Mechanics","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128189416","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}
Pub Date : 2021-10-28DOI: 10.1080/15502287.2021.1992542
Swapnil Patil, U. Chavan
Abstract In present work, plastic zone size and shapes are investigated to predict failure of hip implant materials Ti6Al4V and SS316L (titanium and stainless steel, respectively). Generally, they fracture due to crack propagation in presence of wear which initiates the crack. Plastic zone analysis of SS316L and Ti6Al4V are carried out under standard fracture modes of failure that are first and mixed mode (tensile and shear loading). Crack inclination angle is one of the important parameters to simulate mixed-mode loading conditions. Analytical formulations of plastic zone analysis validated by finite element modeling based on von-Mises criteria. Further, isolines are plotted which explains the variation of plastic zone and geometry near the crack tip. Results obtained under plane strain and plane stress conditions through analytical formulations are in close relevance with FEM. Finally, it is observed that SS316L has large plastic zone which results in slower crack propagation and better life as compared to Ti6Al4V.
{"title":"Plastic zone analysis of SS316L and Ti6Al4V materials under mixed mode loading conditions","authors":"Swapnil Patil, U. Chavan","doi":"10.1080/15502287.2021.1992542","DOIUrl":"https://doi.org/10.1080/15502287.2021.1992542","url":null,"abstract":"Abstract In present work, plastic zone size and shapes are investigated to predict failure of hip implant materials Ti6Al4V and SS316L (titanium and stainless steel, respectively). Generally, they fracture due to crack propagation in presence of wear which initiates the crack. Plastic zone analysis of SS316L and Ti6Al4V are carried out under standard fracture modes of failure that are first and mixed mode (tensile and shear loading). Crack inclination angle is one of the important parameters to simulate mixed-mode loading conditions. Analytical formulations of plastic zone analysis validated by finite element modeling based on von-Mises criteria. Further, isolines are plotted which explains the variation of plastic zone and geometry near the crack tip. Results obtained under plane strain and plane stress conditions through analytical formulations are in close relevance with FEM. Finally, it is observed that SS316L has large plastic zone which results in slower crack propagation and better life as compared to Ti6Al4V.","PeriodicalId":315058,"journal":{"name":"International Journal for Computational Methods in Engineering Science and Mechanics","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123098392","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}
Pub Date : 2021-10-27DOI: 10.1080/15502287.2021.1992543
K. Lalitha, Y. Veeranna, D. Ashok Reddy, G. Sreenivasa
Abstract The current study elucidates the mass and heat transfer characteristics of Casson nanofluid flow over a stretching sheet in a porous medium (PM) subject to a lack of local thermal equilibrium (LTNE). The LTNE model is based on the energy balance of both solid and fluid phases. Hence, distinctive thermal profiles for both the fluid and solid phases are employed in this study. Further, owing to exceptional high intrinsic conductance performance, Carbon nanotubes (CNT’s) show great potential to increase the thermal conductivity. In this connection, CNT’s (single and multi-wall) are considered as suspended nanoparticles in the base fluid sodium alginate (SA). The equations of modeled physical problem are reduced by using a proper transformation, which are then numerically tackled by using the classical Runge-Kutta (RK) process with the shooting technique. The impact of the flow parameters on the thermal, concentration and velocity profiles along with skin friction, Nusselt and Sherwood numbers is explored and interpreted graphically. The results reveal that, SWCNT-sodium alginate Casson nanoliquid show improved heat transfer for growing values of porosity parameter. The fluid and solid phase thermal profiles of MWCNT-sodium alginate Casson nanoliquid is strongly stimulated by growing values of porosity-modified conductivity ratio parameter.
{"title":"A comparative study on heat transfer characterization of sodium alginate-based carbon nanotubes in a non-Newtonian fluid flow using a new local thermal nonequilibrium formulation","authors":"K. Lalitha, Y. Veeranna, D. Ashok Reddy, G. Sreenivasa","doi":"10.1080/15502287.2021.1992543","DOIUrl":"https://doi.org/10.1080/15502287.2021.1992543","url":null,"abstract":"Abstract The current study elucidates the mass and heat transfer characteristics of Casson nanofluid flow over a stretching sheet in a porous medium (PM) subject to a lack of local thermal equilibrium (LTNE). The LTNE model is based on the energy balance of both solid and fluid phases. Hence, distinctive thermal profiles for both the fluid and solid phases are employed in this study. Further, owing to exceptional high intrinsic conductance performance, Carbon nanotubes (CNT’s) show great potential to increase the thermal conductivity. In this connection, CNT’s (single and multi-wall) are considered as suspended nanoparticles in the base fluid sodium alginate (SA). The equations of modeled physical problem are reduced by using a proper transformation, which are then numerically tackled by using the classical Runge-Kutta (RK) process with the shooting technique. The impact of the flow parameters on the thermal, concentration and velocity profiles along with skin friction, Nusselt and Sherwood numbers is explored and interpreted graphically. The results reveal that, SWCNT-sodium alginate Casson nanoliquid show improved heat transfer for growing values of porosity parameter. The fluid and solid phase thermal profiles of MWCNT-sodium alginate Casson nanoliquid is strongly stimulated by growing values of porosity-modified conductivity ratio parameter.","PeriodicalId":315058,"journal":{"name":"International Journal for Computational Methods in Engineering Science and Mechanics","volume":"44 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130724168","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}
Pub Date : 2021-10-16DOI: 10.1080/15502287.2021.1977421
D. Pal, S. Mondal, Hiranmoy Mondal
Abstract The present investigation is related to entropy generation analysis for double-diffusive convection past an exponentially stretching sheet in a porous media. Governing system of coupled dimensionless nonlinear partial differential equations is evaluated using the spectral-quasilinearization method. The effects of various critical controlling parameters on velocity, temperature, concentration, and entropy generation profiles are graphically analyzed. It is procured that profiles of entropy generation inflated for both Brinkman's number and Reynold's number. The computed results are compared with the previously published articles.
{"title":"Features of entropy generation on viscous double-diffusion nanofluid flow over a vertical exponentially stretching surface","authors":"D. Pal, S. Mondal, Hiranmoy Mondal","doi":"10.1080/15502287.2021.1977421","DOIUrl":"https://doi.org/10.1080/15502287.2021.1977421","url":null,"abstract":"Abstract The present investigation is related to entropy generation analysis for double-diffusive convection past an exponentially stretching sheet in a porous media. Governing system of coupled dimensionless nonlinear partial differential equations is evaluated using the spectral-quasilinearization method. The effects of various critical controlling parameters on velocity, temperature, concentration, and entropy generation profiles are graphically analyzed. It is procured that profiles of entropy generation inflated for both Brinkman's number and Reynold's number. The computed results are compared with the previously published articles.","PeriodicalId":315058,"journal":{"name":"International Journal for Computational Methods in Engineering Science and Mechanics","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114616821","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}
Pub Date : 2021-10-11DOI: 10.1080/15502287.2021.1986600
Juan Wang, Xiao Wang, Wenzhen Qu
Abstract This paper considers the application of the method of fundamental solutions (MFS) for the numerical solutions of electroelastic analysis of two-dimensional (2D) piezoelectric materials. Accurate simulating of such problem requires solving the coupled mechanical and electrical partial differential equations. In the MFS, the mechanical displacements and electrical potential are approximated by linear combinations of the fundamental solutions of the coupled electroelastic equations, which are expressed in terms of source points located outside the real computational domain. The final coefficients of the fundamental solutions are calculated by enforcing the satisfaction of the corresponding boundary conditions in a least squares sense. Three benchmark numerical examples are well-studied to demonstrate the accuracy and applicability of the method, where the results obtained are compared with the analytical solutions and these of using other numerical methods.
{"title":"The method of fundamental solutions for electroelastic analysis of two-dimensional piezoelectric materials","authors":"Juan Wang, Xiao Wang, Wenzhen Qu","doi":"10.1080/15502287.2021.1986600","DOIUrl":"https://doi.org/10.1080/15502287.2021.1986600","url":null,"abstract":"Abstract This paper considers the application of the method of fundamental solutions (MFS) for the numerical solutions of electroelastic analysis of two-dimensional (2D) piezoelectric materials. Accurate simulating of such problem requires solving the coupled mechanical and electrical partial differential equations. In the MFS, the mechanical displacements and electrical potential are approximated by linear combinations of the fundamental solutions of the coupled electroelastic equations, which are expressed in terms of source points located outside the real computational domain. The final coefficients of the fundamental solutions are calculated by enforcing the satisfaction of the corresponding boundary conditions in a least squares sense. Three benchmark numerical examples are well-studied to demonstrate the accuracy and applicability of the method, where the results obtained are compared with the analytical solutions and these of using other numerical methods.","PeriodicalId":315058,"journal":{"name":"International Journal for Computational Methods in Engineering Science and Mechanics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129655304","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}
Pub Date : 2021-09-23DOI: 10.1080/15502287.2021.1977420
Rabah Bouchair, A. Bourouis, A. Omara
Abstract This paper aims to investigate the effect of a non-uniform internal volumetric energy generation on the conjugate MHD natural convection in a square cavity filled by an electrically conducting fluid. The uniform magnetic field is applied horizontally; the two horizontal and vertical left walls are thermally insulated, whereas the right vertical wall is kept at constant cold temperature. The governing conservation equations are solved numerically using an in house program based on the finite-volume method and the SIMPLE (Semi-Implicit Method for Pressure Linked Equations) algorithm. The effects of internal Rayleigh, Hartmann and Prandtl numbers, thermal conductivity ratio, inclination angle of the cavity, and the thickness of heat source partition are discussed. The obtained results show that regardless of Kr , α and Δ, an almost pure conduction state is observed for low RaI without MHD and for high RaI with MHD at high magnetic field intensity.
{"title":"Conjugate MHD natural convection in a square cavity with a non-uniform heat source thick solid partition","authors":"Rabah Bouchair, A. Bourouis, A. Omara","doi":"10.1080/15502287.2021.1977420","DOIUrl":"https://doi.org/10.1080/15502287.2021.1977420","url":null,"abstract":"Abstract This paper aims to investigate the effect of a non-uniform internal volumetric energy generation on the conjugate MHD natural convection in a square cavity filled by an electrically conducting fluid. The uniform magnetic field is applied horizontally; the two horizontal and vertical left walls are thermally insulated, whereas the right vertical wall is kept at constant cold temperature. The governing conservation equations are solved numerically using an in house program based on the finite-volume method and the SIMPLE (Semi-Implicit Method for Pressure Linked Equations) algorithm. The effects of internal Rayleigh, Hartmann and Prandtl numbers, thermal conductivity ratio, inclination angle of the cavity, and the thickness of heat source partition are discussed. The obtained results show that regardless of Kr , α and Δ, an almost pure conduction state is observed for low RaI without MHD and for high RaI with MHD at high magnetic field intensity.","PeriodicalId":315058,"journal":{"name":"International Journal for Computational Methods in Engineering Science and Mechanics","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132880191","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}
Pub Date : 2021-09-21DOI: 10.1080/15502287.2021.1977419
B. Prabhakar Reddy, O. Makinde
Abstract In this paper, we made elaborate investigation of the Hall current and radiation effects on MHD heat absorbing unsteady natural convection flow of a viscous incompressible electrically conducting fluid past an impulsively moving infinite vertical plate with ramped temperature and concentration in the presence of first order chemical reaction. The constructing coupled PDEs of the model along with initial and boundary conditions are solved numerically by utilizing the robust FEM. The effects of significant parameters on the primary and secondary velocities, temperature and concentration within the boundary layer are examined. The computational assessment of the primary and secondary shear stresses, rate of heat and mass transfer at the plate surface are put in tabular form. The thermal and mass buoyancy effects elevate both primary and secondary velocity components whilst reverse trend takes place when radiation and chemical reaction parameters are increased. Both primary and secondary velocity components decrease with increasing magnetic parameter whilst opposite trend are noticed with increasing Hall parameter. An increase in Prandtl number and radiation parameter results to reduce temperature distribution. The concentration distribution decreases with increase in Schmidt number and chemical reaction parameter. The significant difference between the fluid velocities is noticed due to the ramped and isothermal boundary conditions.
{"title":"Numerical study on heat absorbing MHD radiating and reacting flow past an impulsively moving vertical plate with ramped temperature and concentration with Hall current","authors":"B. Prabhakar Reddy, O. Makinde","doi":"10.1080/15502287.2021.1977419","DOIUrl":"https://doi.org/10.1080/15502287.2021.1977419","url":null,"abstract":"Abstract In this paper, we made elaborate investigation of the Hall current and radiation effects on MHD heat absorbing unsteady natural convection flow of a viscous incompressible electrically conducting fluid past an impulsively moving infinite vertical plate with ramped temperature and concentration in the presence of first order chemical reaction. The constructing coupled PDEs of the model along with initial and boundary conditions are solved numerically by utilizing the robust FEM. The effects of significant parameters on the primary and secondary velocities, temperature and concentration within the boundary layer are examined. The computational assessment of the primary and secondary shear stresses, rate of heat and mass transfer at the plate surface are put in tabular form. The thermal and mass buoyancy effects elevate both primary and secondary velocity components whilst reverse trend takes place when radiation and chemical reaction parameters are increased. Both primary and secondary velocity components decrease with increasing magnetic parameter whilst opposite trend are noticed with increasing Hall parameter. An increase in Prandtl number and radiation parameter results to reduce temperature distribution. The concentration distribution decreases with increase in Schmidt number and chemical reaction parameter. The significant difference between the fluid velocities is noticed due to the ramped and isothermal boundary conditions.","PeriodicalId":315058,"journal":{"name":"International Journal for Computational Methods in Engineering Science and Mechanics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128217394","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}
Pub Date : 2021-09-13DOI: 10.1080/15502287.2021.1973151
R. Banerjee, Mrutyunjay Rout, D. Bose, A. Karmakar
Abstract In the present study, the free vibration analysis of multiscale functionally graded (FG) carbon nanotube (CNT)–metal–ceramic composite conical shells is conducted using finite element methodology. Using first-order shear deformation theory (FSDT) strains are computed and an eight noded isoparametric shell element is used in the present formulation. Dynamic equation is derived using Lagrange’s equation of motion for moderate rotational speeds wherein Coriolis effect is neglected. The finite element code is developed and validated with the existing literature to analyze the effects of power law index, weight fraction of CNTs, length to thickness ratio, aspect ratio, twist angle and rotational speeds on fundamental natural frequency. Mode shapes of both twisted and untwisted conical shells under varying rotating conditions are also presented.
{"title":"A solution to free vibration of rotating pretwisted hybrid CNTs multiscale functionally graded conical shell","authors":"R. Banerjee, Mrutyunjay Rout, D. Bose, A. Karmakar","doi":"10.1080/15502287.2021.1973151","DOIUrl":"https://doi.org/10.1080/15502287.2021.1973151","url":null,"abstract":"Abstract In the present study, the free vibration analysis of multiscale functionally graded (FG) carbon nanotube (CNT)–metal–ceramic composite conical shells is conducted using finite element methodology. Using first-order shear deformation theory (FSDT) strains are computed and an eight noded isoparametric shell element is used in the present formulation. Dynamic equation is derived using Lagrange’s equation of motion for moderate rotational speeds wherein Coriolis effect is neglected. The finite element code is developed and validated with the existing literature to analyze the effects of power law index, weight fraction of CNTs, length to thickness ratio, aspect ratio, twist angle and rotational speeds on fundamental natural frequency. Mode shapes of both twisted and untwisted conical shells under varying rotating conditions are also presented.","PeriodicalId":315058,"journal":{"name":"International Journal for Computational Methods in Engineering Science and Mechanics","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124831338","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}
Pub Date : 2021-09-06DOI: 10.1080/15502287.2021.1964637
Shweta Paunikar, S. Gopalakrishnan
Abstract A novel elastically coupled double beam (ECDB) finite element with superconvergent properties is developed to primarily study wave propagation in the bonded region of an adhesively bonded single lap joint. An ECDB element consists of two axial-flexural-shear coupled beams coupled with continuously distributed linear elastic springs. A general formulation applicable to both metals and composites is proposed. An exact solution to the static part of six-coupled governing equations of motion is obtained, which is then used to formulate exact stiffness and mass matrices. Consequently, the ECDB element thus formulated has superconvergent properties and is inherently free of shear locking. It is shown that merely a single ECDB element is sufficient to accurately capture the tip deflections of a cantilever double beam type geometry subjected to static loading, following which eigenvalue analysis is performed, and comparisons are made with the commercial finite element software—Abaqus. Further, wave propagation studies are carried out to demonstrate the efficiency of the element in evaluating ultrasonic wave responses across various metallic and composite ECDBs, and comparisons are made with Abaqus and frequency-domain spectral finite element (SFEM) model described in Paunikar and Goapalakrishnan (“Wave propagation in adhesively bonded metallic and composite lap joints modelled through spectrally formulated elastically coupled double beam element,” Compos. Struct., under review). Following this, wave propagation in symmetric metallic, geometrically asymmetric metallic, and symmetric laminated composite lap joints with strong and weak bonding is studied by employing two-noded Lagrangian frame elements to mesh the adherends and superconvergent elastically coupled double beam (SECDB) elements to mesh the bonded region. The results obtained from the superconvergent finite element (SCFE) simulations are compared with those given by Abaqus and SFEM. Lastly, the SCFE models for the cases of perfectly bonded aluminium and symmetric ply laminated composite are experimentally validated. We have shown that the SECDB element developed in this work may be used to efficiently carry out static and dynamic analysis in any symmetric or asymmetric bonded joint comprising of only metals or composites or a combination of the two. It is also demonstrated that various levels of adhesion in a bonded joint can be simulated by varying the coupling spring stiffness value. Additionally, the SECDB element may also be used to study other double beam like coupled structures, for instance, space platforms or dynamic vibration absorbers.
{"title":"A superconvergent elastically coupled double beam element for analysis of adhesively bonded lap joints","authors":"Shweta Paunikar, S. Gopalakrishnan","doi":"10.1080/15502287.2021.1964637","DOIUrl":"https://doi.org/10.1080/15502287.2021.1964637","url":null,"abstract":"Abstract A novel elastically coupled double beam (ECDB) finite element with superconvergent properties is developed to primarily study wave propagation in the bonded region of an adhesively bonded single lap joint. An ECDB element consists of two axial-flexural-shear coupled beams coupled with continuously distributed linear elastic springs. A general formulation applicable to both metals and composites is proposed. An exact solution to the static part of six-coupled governing equations of motion is obtained, which is then used to formulate exact stiffness and mass matrices. Consequently, the ECDB element thus formulated has superconvergent properties and is inherently free of shear locking. It is shown that merely a single ECDB element is sufficient to accurately capture the tip deflections of a cantilever double beam type geometry subjected to static loading, following which eigenvalue analysis is performed, and comparisons are made with the commercial finite element software—Abaqus. Further, wave propagation studies are carried out to demonstrate the efficiency of the element in evaluating ultrasonic wave responses across various metallic and composite ECDBs, and comparisons are made with Abaqus and frequency-domain spectral finite element (SFEM) model described in Paunikar and Goapalakrishnan (“Wave propagation in adhesively bonded metallic and composite lap joints modelled through spectrally formulated elastically coupled double beam element,” Compos. Struct., under review). Following this, wave propagation in symmetric metallic, geometrically asymmetric metallic, and symmetric laminated composite lap joints with strong and weak bonding is studied by employing two-noded Lagrangian frame elements to mesh the adherends and superconvergent elastically coupled double beam (SECDB) elements to mesh the bonded region. The results obtained from the superconvergent finite element (SCFE) simulations are compared with those given by Abaqus and SFEM. Lastly, the SCFE models for the cases of perfectly bonded aluminium and symmetric ply laminated composite are experimentally validated. We have shown that the SECDB element developed in this work may be used to efficiently carry out static and dynamic analysis in any symmetric or asymmetric bonded joint comprising of only metals or composites or a combination of the two. It is also demonstrated that various levels of adhesion in a bonded joint can be simulated by varying the coupling spring stiffness value. Additionally, the SECDB element may also be used to study other double beam like coupled structures, for instance, space platforms or dynamic vibration absorbers.","PeriodicalId":315058,"journal":{"name":"International Journal for Computational Methods in Engineering Science and Mechanics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126270341","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}
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