Pub Date : 2023-01-01DOI: 10.1615/intjmultcompeng.2023047910
Hangtian Song, Qingxiang Meng, Ning Guo, Xudong Chen, W. Xu, Yajun Cao
{"title":"Modeling of Fracture Behavior of Four-Phase Concrete using a DEM-enhanced Structure Generation","authors":"Hangtian Song, Qingxiang Meng, Ning Guo, Xudong Chen, W. Xu, Yajun Cao","doi":"10.1615/intjmultcompeng.2023047910","DOIUrl":"https://doi.org/10.1615/intjmultcompeng.2023047910","url":null,"abstract":"","PeriodicalId":50350,"journal":{"name":"International Journal for Multiscale Computational Engineering","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67462082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/intjmultcompeng.2023049024
Arindam Chakraborty, Kalash Darshan Sahare, Santanu Majumder, Amit Roy Chowdhury
Implant osseointegration is an important factor dictating its long-term efficacy, in situ. Along with various biological factors, it is greatly influenced by the mechanical stimulus at the peri-implant bone. This study aims to understand the biomechanical response of progressive thread dental implants using multi-scale-based finite element analysis employing macro and micro models of bone. µ-CT images of a cadaveric human mandible of its premolar region were obtained along with CT scan of the same region to generate computational models. Total six dental implants were designed having regular and progressive thread depths. Three different stages of healing of the bone-implant assembly were simulated parametrically. The biomechanical environment at the peri-implant bone was analysed considering the ‘Mechanostat’ hypothesis. The obtained results revealed that bone strain is significantly higher during the initial healing phase when the bone is weakest. During this phase, implant stress and its displacement in both buccolingual and coronoapical directions are also noticeably higher. Also, displacements of progressive thread implants were lower in all the healing phases compare to the implants with constant thread depth. The observations of this µFEA study highlight the clinical applicability of a progressive thread dental implant as it generates larger functional surface area thus engaging higher trabeculae and therefore suitable for weaker bone conditions. Furthermore, by comparing the stress values at bone and implant between the two bone models, the CT-based model having inhomogeneous material was deemed suitable as an alternative to computationally expensive µFEA.
{"title":"Understanding the biomechanical response of progressive thread dental implants using multi-scale finite element analysis","authors":"Arindam Chakraborty, Kalash Darshan Sahare, Santanu Majumder, Amit Roy Chowdhury","doi":"10.1615/intjmultcompeng.2023049024","DOIUrl":"https://doi.org/10.1615/intjmultcompeng.2023049024","url":null,"abstract":"Implant osseointegration is an important factor dictating its long-term efficacy, in situ. Along with various biological factors, it is greatly influenced by the mechanical stimulus at the peri-implant bone. This study aims to understand the biomechanical response of progressive thread dental implants using multi-scale-based finite element analysis employing macro and micro models of bone. µ-CT images of a cadaveric human mandible of its premolar region were obtained along with CT scan of the same region to generate computational models. Total six dental implants were designed having regular and progressive thread depths. Three different stages of healing of the bone-implant assembly were simulated parametrically. The biomechanical environment at the peri-implant bone was analysed considering the ‘Mechanostat’ hypothesis. The obtained results revealed that bone strain is significantly higher during the initial healing phase when the bone is weakest. During this phase, implant stress and its displacement in both buccolingual and coronoapical directions are also noticeably higher. Also, displacements of progressive thread implants were lower in all the healing phases compare to the implants with constant thread depth. The observations of this µFEA study highlight the clinical applicability of a progressive thread dental implant as it generates larger functional surface area thus engaging higher trabeculae and therefore suitable for weaker bone conditions. Furthermore, by comparing the stress values at bone and implant between the two bone models, the CT-based model having inhomogeneous material was deemed suitable as an alternative to computationally expensive µFEA.","PeriodicalId":50350,"journal":{"name":"International Journal for Multiscale Computational Engineering","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135650448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/intjmultcompeng.2023047907
Xiao-Wen Wang, K. Cui, Ran Yuan
{"title":"Complete and semi-complete explicit algorithms of a unified critical state model for over-consolidation clays","authors":"Xiao-Wen Wang, K. Cui, Ran Yuan","doi":"10.1615/intjmultcompeng.2023047907","DOIUrl":"https://doi.org/10.1615/intjmultcompeng.2023047907","url":null,"abstract":"","PeriodicalId":50350,"journal":{"name":"International Journal for Multiscale Computational Engineering","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67461613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/intjmultcompeng.2023048155
Zhong Lei, Gonghe Wang, Zhiguo Yan
{"title":"Calibration Method of Microscopic Parameters for Similar Material of Surrounding Rock based on DEM","authors":"Zhong Lei, Gonghe Wang, Zhiguo Yan","doi":"10.1615/intjmultcompeng.2023048155","DOIUrl":"https://doi.org/10.1615/intjmultcompeng.2023048155","url":null,"abstract":"","PeriodicalId":50350,"journal":{"name":"International Journal for Multiscale Computational Engineering","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67461683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/intjmultcompeng.2023049206
Parthasarathi Samanta, Surajit Kundu, Abhisek Gupta, Masud Rana, Nitesh Mondal, Amit Roy Chowdhury
3D Porous scaffold is one of the standard and evocative approaches to creating a favorable biomechanical environment in tissue engineering for tissue regeneration and repair. The architectural design parameters (e.g., pore-shape, size, distribution and interconnectivity; permeability; specific surface area etc.) of the porous model have significant influence on their mechano-biological behavior. Flow dynamics of fluid is a very vital phenomenon in understanding how the blood flows through the porous structure which is the responsibility of the biological behavior of the cell. As permeability and porosity are the essential parameters of scaffolds architecture, in this study, von-Mises stress, deformation, wall shear stress (WSS) and the pressure drop across the model have been investigated. Using computational fluid dynamics, geometrical, static structure and WSS are compared with the natural bone with different porosity to identify which architectural design is close to the bone.
{"title":"Assessment of mechanical responses between trabecular bones and porous scaffolds under static loading and fluid flow conditions: A finite element approach","authors":"Parthasarathi Samanta, Surajit Kundu, Abhisek Gupta, Masud Rana, Nitesh Mondal, Amit Roy Chowdhury","doi":"10.1615/intjmultcompeng.2023049206","DOIUrl":"https://doi.org/10.1615/intjmultcompeng.2023049206","url":null,"abstract":"3D Porous scaffold is one of the standard and evocative approaches to creating a favorable biomechanical environment in tissue engineering for tissue regeneration and repair. The architectural design parameters (e.g., pore-shape, size, distribution and interconnectivity; permeability; specific surface area etc.) of the porous model have significant influence on their mechano-biological behavior. Flow dynamics of fluid is a very vital phenomenon in understanding how the blood flows through the porous structure which is the responsibility of the biological behavior of the cell. As permeability and porosity are the essential parameters of scaffolds architecture, in this study, von-Mises stress, deformation, wall shear stress (WSS) and the pressure drop across the model have been investigated. Using computational fluid dynamics, geometrical, static structure and WSS are compared with the natural bone with different porosity to identify which architectural design is close to the bone.","PeriodicalId":50350,"journal":{"name":"International Journal for Multiscale Computational Engineering","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136302433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/intjmultcompeng.2023047756
P. R., Banu Priya Prathaban, J. M, Subash Rajendran, A. M
{"title":"Computational Framework for Human Detection Through Improved UWB Radar System","authors":"P. R., Banu Priya Prathaban, J. M, Subash Rajendran, A. M","doi":"10.1615/intjmultcompeng.2023047756","DOIUrl":"https://doi.org/10.1615/intjmultcompeng.2023047756","url":null,"abstract":"","PeriodicalId":50350,"journal":{"name":"International Journal for Multiscale Computational Engineering","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67461552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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