Analytical Estimation and Experimental Validation of the Bending Stiffness of the Transmission Line Conductors
- Title
- Analytical Estimation and Experimental Validation of the Bending Stiffness of the Transmission Line Conductors
- Creator
- Dulabhai H.P.; Parthasarathy N.S.; Hebbar G.S.
- Description
- The bending stiffness of transmission line conductors can vary significantly, ranging from maximum stiffness when behaving monolithically to minimum stiffness when wires behave loosely. This large range makes it challenging to estimate stiffness accurately at intermittent bending stages. To address this issue, a mathematical model that accounts for both frictional forces between wires in the same layer and the clenching effects of helical wires from preceding layers is proposed in this paper. The proposed model estimates cable bending stiffness as a function of axial load and curvature for multilayered strands by considering slip caused by wire behavior. To evaluate the bending stiffness, experiments were conducted on Panther and Moose Indian Power Transmission line conductors. The proposed slip model considers Coulomb frictional effects and clenching effects caused by Hertzian contact forces, filling the void in the estimation procedure. Additionally, the model considers the wire stretch effect, a parameter not previously accounted for in cable research. The predicted numerical results of the proposed model were found to vary within a maximum of 7% from the experimental tests. The proposed mathematical model thus offers a more accurate and comprehensive way of estimating the bending stiffness of transmission line conductors, addressing the existing limitations in the estimation procedure. 2024 College of Engineering, Universiti Teknologi MARA (UiTM), Malaysia.
- Source
- Journal of Mechanical Engineering, Vol-21, No. 1, pp. 23-43.
- Date
- 2024-01-01
- Publisher
- UiTM Press
- Subject
- Bending Stiffness; Inter Wire Friction; Revised Slip Theory; Transverse Load
- Coverage
- Dulabhai H.P., Department of Mechanical and Automobile Engineering, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560074, India; Parthasarathy N.S., Department of Mechanical and Automobile Engineering, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560074, India; Hebbar G.S., Department of Mechanical and Automobile Engineering, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560074, India
- Rights
- All Open Access; Bronze Open Access
- Relation
- ISSN: 18235514
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Dulabhai H.P.; Parthasarathy N.S.; Hebbar G.S., “Analytical Estimation and Experimental Validation of the Bending Stiffness of the Transmission Line Conductors,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 25, 2025, https://archives.christuniversity.in/items/show/13696.