Pub Date : 2023-04-15DOI: 10.1142/s1758825123500515
Sai Zhang, Yeyin Xu, R. Zhao, Y. Jiao, Zhaobo Chen
{"title":"Dynamic analysis and independent high-order nonlinear dynamics of a rotor-bearing-finger seal system","authors":"Sai Zhang, Yeyin Xu, R. Zhao, Y. Jiao, Zhaobo Chen","doi":"10.1142/s1758825123500515","DOIUrl":"https://doi.org/10.1142/s1758825123500515","url":null,"abstract":"","PeriodicalId":49186,"journal":{"name":"International Journal of Applied Mechanics","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43028628","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}
Pub Date : 2023-04-15DOI: 10.1142/s1758825123500485
Liang Liu, H. Lee
{"title":"A Design of Auxetic Metamaterial with Locally Resonant Bandgaps using Topological Optimization","authors":"Liang Liu, H. Lee","doi":"10.1142/s1758825123500485","DOIUrl":"https://doi.org/10.1142/s1758825123500485","url":null,"abstract":"","PeriodicalId":49186,"journal":{"name":"International Journal of Applied Mechanics","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45714696","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}
Pub Date : 2023-04-13DOI: 10.1142/s1758825123500862
Jiahao Liu, J. Yeo
Amorphous silica ($a-SiO_2$) is a widely used inorganic material. Interestingly, the relationship between the local atomic structures of $a-SiO_2$ and their effects on ductility and fracture is seldom explored. Here, we combine large-scale molecular dynamics simulations and machine learning methods to examine the molecular deformations and fracture mechanisms of $a-SiO_2$. By quenching at high pressures, we demonstrate that densifying $a-SiO_2$ increases the ductility and toughness. Through theoretical analysis and simulation results, we find that changes in local bonding topologies greatly facilitate energy dissipation during plastic deformation, particularly if the coordination numbers decrease. The appearance of fracture can then be accurately located based on the spatial distribution of the atoms. We further observe that the static unstrained structure encodes the propensity for local atomic coordination to change during applied strain, hence a distinct connection can be made between the initial atomic configurations before loading and the final far-from-equilibrium atomic configurations upon fracture. These results are essential for understanding how atomic arrangements strongly influence the mechanical properties and structural features in amorphous solids and will be useful in atomistic design of functional materials.
{"title":"Predicting the Fracture Propensity of Amorphous Silica using Molecular Dynamics Simulations and Machine Learning","authors":"Jiahao Liu, J. Yeo","doi":"10.1142/s1758825123500862","DOIUrl":"https://doi.org/10.1142/s1758825123500862","url":null,"abstract":"Amorphous silica ($a-SiO_2$) is a widely used inorganic material. Interestingly, the relationship between the local atomic structures of $a-SiO_2$ and their effects on ductility and fracture is seldom explored. Here, we combine large-scale molecular dynamics simulations and machine learning methods to examine the molecular deformations and fracture mechanisms of $a-SiO_2$. By quenching at high pressures, we demonstrate that densifying $a-SiO_2$ increases the ductility and toughness. Through theoretical analysis and simulation results, we find that changes in local bonding topologies greatly facilitate energy dissipation during plastic deformation, particularly if the coordination numbers decrease. The appearance of fracture can then be accurately located based on the spatial distribution of the atoms. We further observe that the static unstrained structure encodes the propensity for local atomic coordination to change during applied strain, hence a distinct connection can be made between the initial atomic configurations before loading and the final far-from-equilibrium atomic configurations upon fracture. These results are essential for understanding how atomic arrangements strongly influence the mechanical properties and structural features in amorphous solids and will be useful in atomistic design of functional materials.","PeriodicalId":49186,"journal":{"name":"International Journal of Applied Mechanics","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41981259","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}
Pub Date : 2023-03-31DOI: 10.1142/s1758825123500473
A. Nee, Ali J. Chamkha
{"title":"A simplified GPU implementation of the hybrid lattice Boltzmann model for three-dimensional high Rayleigh number flows","authors":"A. Nee, Ali J. Chamkha","doi":"10.1142/s1758825123500473","DOIUrl":"https://doi.org/10.1142/s1758825123500473","url":null,"abstract":"","PeriodicalId":49186,"journal":{"name":"International Journal of Applied Mechanics","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44864137","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}
Pub Date : 2023-03-24DOI: 10.1142/s1758825123500461
Xuan Ge, Yu E. Ma, Nanke Fu, W. Zhang, Zhen Wang
{"title":"A generalized ductile phase field model for fracture behavior of three-dimensional metal structures","authors":"Xuan Ge, Yu E. Ma, Nanke Fu, W. Zhang, Zhen Wang","doi":"10.1142/s1758825123500461","DOIUrl":"https://doi.org/10.1142/s1758825123500461","url":null,"abstract":"","PeriodicalId":49186,"journal":{"name":"International Journal of Applied Mechanics","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44241532","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}
Pub Date : 2023-03-17DOI: 10.1142/s1758825123500436
Jialei He, C. She, Jiafen Cao
{"title":"A new equivalent thickness model for fracture prediction on round rods with elliptic surface cracks","authors":"Jialei He, C. She, Jiafen Cao","doi":"10.1142/s1758825123500436","DOIUrl":"https://doi.org/10.1142/s1758825123500436","url":null,"abstract":"","PeriodicalId":49186,"journal":{"name":"International Journal of Applied Mechanics","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49439234","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}
Pub Date : 2023-03-17DOI: 10.1142/s1758825123500424
Manasa Bhat, S. Manna
{"title":"Behavior of Love wave fields due to the reinforcement, porosity distributions, non-local elasticity and irregular boundary surfaces","authors":"Manasa Bhat, S. Manna","doi":"10.1142/s1758825123500424","DOIUrl":"https://doi.org/10.1142/s1758825123500424","url":null,"abstract":"","PeriodicalId":49186,"journal":{"name":"International Journal of Applied Mechanics","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45112099","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}
Pub Date : 2023-03-09DOI: 10.1142/s1758825123500394
Shi Guanghui, Wu Wenhua, Lin Ye, Liao Qiang, Lin Xiaohu, Mei Yue
{"title":"Temperature-dependent thermal parameter identification of ceramic nanorod aerogels composite in the ultrahigh temperature environment","authors":"Shi Guanghui, Wu Wenhua, Lin Ye, Liao Qiang, Lin Xiaohu, Mei Yue","doi":"10.1142/s1758825123500394","DOIUrl":"https://doi.org/10.1142/s1758825123500394","url":null,"abstract":"","PeriodicalId":49186,"journal":{"name":"International Journal of Applied Mechanics","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42320784","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}
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