Static Strength of Tubular K-Joints Reinforced with Outer Plates under Axial Loads at Ambient and Fire Conditions

Nassiraei, Hossein; Yara, Amin

doi:10.3390/met13111857

Cited by 9 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Subsequently, a parameterized modeling approach is employed to conveniently establish finite element models with different initial defects for analysis. The load-bearing capacity of the structure is simulated based on the risk method [30]. Finally, the method proposed in this paper is applied to analyze an actual bridge, accurately retracing its deformation process, and based on this, analyzing its load-bearing capacity.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of a Masonry Arch Bridge with Initial Defects Based on Cohesive Elements

Zou,

Wang,

2023

Buildings

View full text Add to dashboard Cite

Most of the existing masonry bridges have been in service for a significant duration, and as a result of construction limitations, these structures often exhibit intricate geometric defects. Furthermore, under prolonged loading conditions, the rheological behavior of rock can induce deformation in masonry bridges, leading to a continuously evolving stress state. Employing an idealized model for safety assessment frequently results in an overestimation of their load-bearing capacity. To accurately evaluate the load-bearing performance and remaining service life of masonry bridges, as well as to prevent safety incidents, this study employs a parametric approach to establish a two-phase numerical model of masonry bridges. In this model, cohesive elements are introduced to simulate the bonding relationship, while the distribution pattern of geometric initial defects is determined based on the theory of conditional random fields. Additionally, the rheological behavior of rock is incorporated through a custom-written Abaqus user subroutine. Building upon this foundation, the probability distribution of the load-bearing capacity of masonry bridges is reconstructed using the maximum entropy method with fractional moment constraints. The resulting outcomes are compared and validated against those obtained using the decomposition conditional correlation matrix. Finally, the effectiveness and applicability of the proposed method are demonstrated through numerical simulations and field measurements conducted on an actual bridge. The findings reveal that the method introduced in this paper adequately accounts for the stochastic nature of geometric initial defects, objectively reflects the operational performance of masonry bridges, and effectively simulates the complete failure process of such structures. Consequently, this method provides a solid basis for the safety assessment of masonry bridges.

show abstract

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of a Masonry Arch Bridge with Initial Defects Based on Cohesive Elements

Zou,

Wang,

2023

Buildings

View full text Add to dashboard Cite

show abstract

“…Zheng et al [14] studied the effect of the foam filling of the cargo floor substructure on the acceleration and failure mode of the fuselage structure, and it was reported that the foam filling of the cargo floor substructure could significantly reduce the acceleration pulse transmitted to the passenger compartment floor. Hossein et al [15] evaluated the effect of the outer reinforcing plate on the initial stiffness, ultimate strength, and failure mechanisms of tubular K-joints under axial load under ambient and different fire conditions and proposed a highly precise, practical design equation based on the yield volume model for determining the ultimate strength. Xie et al [16] studied the impact of cargo luggage on the crashworthiness of the fuselage section.…”

Section: Introductionmentioning

confidence: 99%

Influence of Cargo Luggage on the Vertical Drop Crashworthiness of Aircraft Mid-Fuselage Section

Zhu,

Liu,

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

The evaluation of structural crashworthiness is important for the development of civil aircraft. In this study, cargo luggage was considered in the vertical drop simulation of an aircraft mid-fuselage section. First, quasi-static compression tests on three types of luggage made of different materials were conducted. Then, a finite element model (FEM) of the cargo luggage was developed with a crushable foam material in LS-PrePost4.5 software. The finite element analysis results of the luggage made of different materials were consistent with the corresponding compression experiments. Secondly, the FEM of the mid-fuselage section was established without cargo luggage. The simulated displacement and acceleration of the fuselage section were consistent with the test results. Finally, the influences of cargo luggage on the fuselage vertical drop response were studied with the FEM considering both the fuselage structure and cargo luggage. Compared with the responses of the fuselage without cargo luggage, the cargo luggage could reduce the deformation of the cargo bay and maintain the integrity of the passenger living space in the cabin at the vertical velocity of 6 m/s, even though the initial kinetic energy was higher.

show abstract

Parameter correlations of multi-planar DKT-joint under axial loadings

Zavvar,

Rosa-Santos,

Taveira-Pinto

2024

J. Ocean Eng. Mar. Energy

View full text Add to dashboard Cite

Static Strength of Tubular K-Joints Reinforced with Outer Plates under Axial Loads at Ambient and Fire Conditions

Cited by 9 publications

References 30 publications

Numerical Simulation of a Masonry Arch Bridge with Initial Defects Based on Cohesive Elements

Numerical Simulation of a Masonry Arch Bridge with Initial Defects Based on Cohesive Elements

Influence of Cargo Luggage on the Vertical Drop Crashworthiness of Aircraft Mid-Fuselage Section

Parameter correlations of multi-planar DKT-joint under axial loadings

Contact Info

Product

Resources

About