Pub Date : 2023-08-01DOI: 10.1061/ppscfx.sceng-1222
Ali Nour El Hajj
: Background: The perennial deficiencies of the failure models in the materials field have profoundly and significantly impacted all associated technical fields that depend on accurate failure predictions. Many preeminent and well-known scientists from an earlier era of groundbreaking discoveries attempted to solve the issue of material failure. However, a thorough understanding of material failure has been frustratingly elusive. Objective: The heart of this study is the presentation of a methodology that identifies a newly derived one-parameter criterion as the only general failure theory for noncompressible, homogeneous, and isotropic materials subjected to multiaxial states of stress and various boundary conditions, providing the solution to this longstanding problem. This theory is the counterpart and companion piece to the theory of elasticity and is in a formalism that is suitable for broad application. Methods: Utilizing advanced finite-element analysis, the maximum internal breaking stress corresponding to the maximum applied external force is identified as a unified and universal material failure criterion for determining the structural capacity of any system, regardless of its geometry or architecture. Results: A comparison between the proposed criterion and methodology against design codes reveals that current provisions may underestimate the structural capacity by 2.17 times or overestimate the capacity by 2.096 times. It also shows that existing standards may underestimate the structural capacity by 1.4 times or overestimate the capacity by 2.49 times. Conclusion: The proposed failure criterion and methodology will pave the way for a new era in designing unconventional structural systems composed of unconventional materials.
{"title":"Breaking Stress Criterion That Changes Everything We Know about Materials Failure","authors":"Ali Nour El Hajj","doi":"10.1061/ppscfx.sceng-1222","DOIUrl":"https://doi.org/10.1061/ppscfx.sceng-1222","url":null,"abstract":": Background: The perennial deficiencies of the failure models in the materials field have profoundly and significantly impacted all associated technical fields that depend on accurate failure predictions. Many preeminent and well-known scientists from an earlier era of groundbreaking discoveries attempted to solve the issue of material failure. However, a thorough understanding of material failure has been frustratingly elusive. Objective: The heart of this study is the presentation of a methodology that identifies a newly derived one-parameter criterion as the only general failure theory for noncompressible, homogeneous, and isotropic materials subjected to multiaxial states of stress and various boundary conditions, providing the solution to this longstanding problem. This theory is the counterpart and companion piece to the theory of elasticity and is in a formalism that is suitable for broad application. Methods: Utilizing advanced finite-element analysis, the maximum internal breaking stress corresponding to the maximum applied external force is identified as a unified and universal material failure criterion for determining the structural capacity of any system, regardless of its geometry or architecture. Results: A comparison between the proposed criterion and methodology against design codes reveals that current provisions may underestimate the structural capacity by 2.17 times or overestimate the capacity by 2.096 times. It also shows that existing standards may underestimate the structural capacity by 1.4 times or overestimate the capacity by 2.49 times. Conclusion: The proposed failure criterion and methodology will pave the way for a new era in designing unconventional structural systems composed of unconventional materials.","PeriodicalId":46473,"journal":{"name":"Practice Periodical on Structural Design and Construction","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46912761","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 : 2023-08-01DOI: 10.1061/ppscfx.sceng-1223
Qais K. Jahanger, Grant Zimmerman, Amila Hadziomerspahic, Molly A. Martin, David N. Sillars, Ean H. Ng, Javier Calvo-Amodio
{"title":"Economic and Operational Impacts of Three-Dimensional Engineered Models and Automated Machine Guidance on Statewide Roadway Projects","authors":"Qais K. Jahanger, Grant Zimmerman, Amila Hadziomerspahic, Molly A. Martin, David N. Sillars, Ean H. Ng, Javier Calvo-Amodio","doi":"10.1061/ppscfx.sceng-1223","DOIUrl":"https://doi.org/10.1061/ppscfx.sceng-1223","url":null,"abstract":"","PeriodicalId":46473,"journal":{"name":"Practice Periodical on Structural Design and Construction","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42729675","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 : 2023-08-01DOI: 10.1061/ppscfx.sceng-1293
A. O. Mawlod, Dillshad K. H. Bzeni
{"title":"Mechanical Performance of Fiber-Reinforced Slag-Based Geopolymer Composite","authors":"A. O. Mawlod, Dillshad K. H. Bzeni","doi":"10.1061/ppscfx.sceng-1293","DOIUrl":"https://doi.org/10.1061/ppscfx.sceng-1293","url":null,"abstract":"","PeriodicalId":46473,"journal":{"name":"Practice Periodical on Structural Design and Construction","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47460712","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 : 2023-08-01DOI: 10.1061/ppscfx.sceng-1302
Nikhil P. Zade, P. Sarkar, Robin Davis
{"title":"Current Status and Future Challenges of Autoclave Aerated Concrete Masonry","authors":"Nikhil P. Zade, P. Sarkar, Robin Davis","doi":"10.1061/ppscfx.sceng-1302","DOIUrl":"https://doi.org/10.1061/ppscfx.sceng-1302","url":null,"abstract":"","PeriodicalId":46473,"journal":{"name":"Practice Periodical on Structural Design and Construction","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42050082","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 : 2023-05-01DOI: 10.1061/ppscfx.sceng-1249
Nader Zad, H. Melhem
This study developed a material model that simulates load-induced cracking in reinforced concrete (RC) elements in finite element (FE) analysis of structures. The simulation of complete stress-strain concrete behavior under tension and compression (including damage characteristics) requires the application of two numerical material models, which potentially will produce the stress-strain curves. The models include strain-softening regimes that presuppose the use of ultimate compressive concrete strength which could be practically implemented for existing or future RC structures. The method presented in this study is valuable because it assesses existing RC structures when detailed test results are unavailable. However, the implemented numerical models were slightly altered to make them comparable to the damaged plasticity model available in the finite element package used (Abaqus).
{"title":"Modeling Plastic Damage of Reinforced Concrete in Finite-Element Applications","authors":"Nader Zad, H. Melhem","doi":"10.1061/ppscfx.sceng-1249","DOIUrl":"https://doi.org/10.1061/ppscfx.sceng-1249","url":null,"abstract":"This study developed a material model that simulates load-induced cracking in reinforced concrete (RC) elements in finite element (FE) analysis of structures. The simulation of complete stress-strain concrete behavior under tension and compression (including damage characteristics) requires the application of two numerical material models, which potentially will produce the stress-strain curves. The models include strain-softening regimes that presuppose the use of ultimate compressive concrete strength which could be practically implemented for existing or future RC structures. The method presented in this study is valuable because it assesses existing RC structures when detailed test results are unavailable. However, the implemented numerical models were slightly altered to make them comparable to the damaged plasticity model available in the finite element package used (Abaqus).","PeriodicalId":46473,"journal":{"name":"Practice Periodical on Structural Design and Construction","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43705262","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 : 2023-05-01DOI: 10.1061/ppscfx.sceng-1164
O. Oyeyipo, I. Osuizugbo
{"title":"Factors Influencing Enterprise Risk Management Implementation of Construction Firms in Lagos State, Nigeria","authors":"O. Oyeyipo, I. Osuizugbo","doi":"10.1061/ppscfx.sceng-1164","DOIUrl":"https://doi.org/10.1061/ppscfx.sceng-1164","url":null,"abstract":"","PeriodicalId":46473,"journal":{"name":"Practice Periodical on Structural Design and Construction","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42679902","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 : 2023-05-01DOI: 10.1061/ppscfx.sceng-1237
G. Fu, Qing Wang
{"title":"Longitudinal Multiple Presence of Trucks on Continuous Bridge Spans","authors":"G. Fu, Qing Wang","doi":"10.1061/ppscfx.sceng-1237","DOIUrl":"https://doi.org/10.1061/ppscfx.sceng-1237","url":null,"abstract":"","PeriodicalId":46473,"journal":{"name":"Practice Periodical on Structural Design and Construction","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44793891","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 : 2023-05-01DOI: 10.1061/ppscfx.sceng-1263
Peerasak Aemlaor, K. Fujikake, P. Sukontasukkul
{"title":"Feasibility Study on Novel Blasting Technique Using Linear-Shaped Charges to Cut Reinforcing Steel Bars in Reinforced Concrete Members","authors":"Peerasak Aemlaor, K. Fujikake, P. Sukontasukkul","doi":"10.1061/ppscfx.sceng-1263","DOIUrl":"https://doi.org/10.1061/ppscfx.sceng-1263","url":null,"abstract":"","PeriodicalId":46473,"journal":{"name":"Practice Periodical on Structural Design and Construction","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47408885","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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