Buckling Analysis and Stability of Compressed Low-Carbon Steel Rods in the Elastoplastic Region of Materials
This paper presents new approaches for solving a problem of the stability of compressed rods in the elastoplastic working region of materials. It is known that the columns of buildings, supports of engineering devices, drill rods of oil, and gas extraction industry may be subjected to significant ri...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/7601260 |
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| author | Gaioz Partskhaladze Ingusha Mshvenieradze Elguja Medzmariashvili Gocha Chavleshvili Victor Yepes Julian Alcala |
| author_facet | Gaioz Partskhaladze Ingusha Mshvenieradze Elguja Medzmariashvili Gocha Chavleshvili Victor Yepes Julian Alcala |
| author_sort | Gaioz Partskhaladze |
| collection | DOAJ |
| description | This paper presents new approaches for solving a problem of the stability of compressed rods in the elastoplastic working region of materials. It is known that the columns of buildings, supports of engineering devices, drill rods of oil, and gas extraction industry may be subjected to significant risk of stability loss. Nowadays, there are design methods based on test results defining the relations (e.g., critical stresses-slenderness) to avoid this risk due to stability loss, but the precision and limits of definition are not always known. The main objectives of the study were to develop new approaches that would allow specifying the values of critical stresses of compressed elements beyond the proportional limit. The problem of stability of the compressed elements in the elastoplastic region was studied according to the stability theory. The authors suggested an original approach to the issue; in particular, the determination of values of the critical stresses and the finding of the points of the bifurcation were carried out by the tangent established by experimental results and by the approximation of the so-called double modulus. Comparative analysis showed the advantage of the proposed approach, particularly that the new critical curves were located below the curves of Engesser-Karman and Shanley and above the critical curves established by building codes. A new approach for the determination of critical stresses in the elastoplastic region was developed through which the structural reliability and economic efficiency was increased by almost 12% compared to the existing approaches. |
| format | Article |
| id | doaj-art-9ed34f6e49564a239d6706dfdb83d521 |
| institution | OA Journals |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-9ed34f6e49564a239d6706dfdb83d5212025-08-20T02:18:33ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/76012607601260Buckling Analysis and Stability of Compressed Low-Carbon Steel Rods in the Elastoplastic Region of MaterialsGaioz Partskhaladze0Ingusha Mshvenieradze1Elguja Medzmariashvili2Gocha Chavleshvili3Victor Yepes4Julian Alcala5Engineering and Construction Department, Batumi Shota Rustaveli State University, Batumi 6010, GeorgiaDepartment of Civil and Industrial Engineering, Georgian Technical University, Tbilisi 6000, GeorgiaDepartment of Civil and Industrial Engineering, Georgian Technical University, Tbilisi 6000, GeorgiaEngineering and Construction Department, Batumi Shota Rustaveli State University, Batumi 6010, GeorgiaInstitute of Concrete Science and Technology (ICITECH), Universitat Politècnica de València, Valencia 46022, SpainInstitute of Concrete Science and Technology (ICITECH), Universitat Politècnica de València, Valencia 46022, SpainThis paper presents new approaches for solving a problem of the stability of compressed rods in the elastoplastic working region of materials. It is known that the columns of buildings, supports of engineering devices, drill rods of oil, and gas extraction industry may be subjected to significant risk of stability loss. Nowadays, there are design methods based on test results defining the relations (e.g., critical stresses-slenderness) to avoid this risk due to stability loss, but the precision and limits of definition are not always known. The main objectives of the study were to develop new approaches that would allow specifying the values of critical stresses of compressed elements beyond the proportional limit. The problem of stability of the compressed elements in the elastoplastic region was studied according to the stability theory. The authors suggested an original approach to the issue; in particular, the determination of values of the critical stresses and the finding of the points of the bifurcation were carried out by the tangent established by experimental results and by the approximation of the so-called double modulus. Comparative analysis showed the advantage of the proposed approach, particularly that the new critical curves were located below the curves of Engesser-Karman and Shanley and above the critical curves established by building codes. A new approach for the determination of critical stresses in the elastoplastic region was developed through which the structural reliability and economic efficiency was increased by almost 12% compared to the existing approaches.http://dx.doi.org/10.1155/2019/7601260 |
| spellingShingle | Gaioz Partskhaladze Ingusha Mshvenieradze Elguja Medzmariashvili Gocha Chavleshvili Victor Yepes Julian Alcala Buckling Analysis and Stability of Compressed Low-Carbon Steel Rods in the Elastoplastic Region of Materials Advances in Civil Engineering |
| title | Buckling Analysis and Stability of Compressed Low-Carbon Steel Rods in the Elastoplastic Region of Materials |
| title_full | Buckling Analysis and Stability of Compressed Low-Carbon Steel Rods in the Elastoplastic Region of Materials |
| title_fullStr | Buckling Analysis and Stability of Compressed Low-Carbon Steel Rods in the Elastoplastic Region of Materials |
| title_full_unstemmed | Buckling Analysis and Stability of Compressed Low-Carbon Steel Rods in the Elastoplastic Region of Materials |
| title_short | Buckling Analysis and Stability of Compressed Low-Carbon Steel Rods in the Elastoplastic Region of Materials |
| title_sort | buckling analysis and stability of compressed low carbon steel rods in the elastoplastic region of materials |
| url | http://dx.doi.org/10.1155/2019/7601260 |
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