View in EDS

Direct-Strength Method for Plates with Perforations.

Saved in:
Bibliographic Details
Title: Direct-Strength Method for Plates with Perforations.
Authors: Naraidoo, Elenor1 (AUTHOR) elenor.naraidoo@pmb.ox.ac.uk, Rossi, Barbara2 (AUTHOR)
Source: Journal of Structural Engineering. Jul2026, Vol. 152 Issue 7, p1-13. 13p.
Subjects: Mechanical buckling, Structural plates, Strength of material testing, Sensitivity analysis, Finite element method, Deformations (Mechanics), Structural analysis (Engineering)
Abstract: This paper investigates the buckling behavior of simply supported plates with an arrangement of either regular or staggered perforations. Experiments on perforated aluminum plates validate a finite-element (FE) model employed for a geometric and nonlinear analysis (GMNIA) parametric assessment. The number, size, and position of perforations is varied, resulting in 300 FE models. The failure mode is shown to be governed by a geometric parameter Ω , distinguishing between two distinct types of behavior. A modified slenderness λl,m is introduced, revealing a strong relationship with the ultimate-to-net section yield strength ratio for plates typically exhibiting whole plate buckling or an interaction of local buckling modes. However, this relationship for plates typically exhibiting unstiffened strip buckling, Euler strip buckling, or lateral perforation buckling is considerably weaker. Using least-squares regression, a direct-strength method (DSM)–style equation is developed to predict the capacity of perforated plates, with either a regular or staggered arrangement of perforations. Given in terms of a parameter κ , this expression can accommodate both failure types with a mean accuracy μ=1.01 , coefficient of variation (COV)=0.154 , and a good overall R2 performance of 0.777. This demonstrates a significant improvement to existing methods. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Structural Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:This paper investigates the buckling behavior of simply supported plates with an arrangement of either regular or staggered perforations. Experiments on perforated aluminum plates validate a finite-element (FE) model employed for a geometric and nonlinear analysis (GMNIA) parametric assessment. The number, size, and position of perforations is varied, resulting in 300 FE models. The failure mode is shown to be governed by a geometric parameter Ω , distinguishing between two distinct types of behavior. A modified slenderness λl,m is introduced, revealing a strong relationship with the ultimate-to-net section yield strength ratio for plates typically exhibiting whole plate buckling or an interaction of local buckling modes. However, this relationship for plates typically exhibiting unstiffened strip buckling, Euler strip buckling, or lateral perforation buckling is considerably weaker. Using least-squares regression, a direct-strength method (DSM)–style equation is developed to predict the capacity of perforated plates, with either a regular or staggered arrangement of perforations. Given in terms of a parameter κ , this expression can accommodate both failure types with a mean accuracy μ=1.01 , coefficient of variation (COV)=0.154 , and a good overall R2 performance of 0.777. This demonstrates a significant improvement to existing methods. [ABSTRACT FROM AUTHOR]
ISSN:07339445
DOI:10.1061/JSENDH.STENG-15690