Off-Axis Crushes Simulation of Thin-walled Tapered Tubes Inserted with Foam-filled Structures

Othman, A.; Jailani, Azrol

doi:10.1016/j.apcbee.2014.01.069

Cited by 4 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…206 × 126 mm (Figure 1a). Shape and dimensions were chosen considering similar investigations [12,13], where it was revealed how the structural response (obviously) depends on the geometric characteristics of the structure in a relevant way without however being able to propose the 'best shape' (as this response also depends on other factors [14]).…”

Section: Samples and Experimentsmentioning

confidence: 99%

Enhanced Predictive Model for the Mechanical Response of Compression-Loaded Slender Structures

Fragassa

Pavlović

2023

Metals

View full text Add to dashboard Cite

The study of the behavior of thin metal sheets subjected to external loads has always been a matter of great interest due to its numerous theoretical and practical implications. The present analysis aims to investigate how to improve the predictions offered by a numerical model based on the finite element method by considerations on the material properties. Specifically, different modeling alternatives are compared, assessing these choices both with the similar assumptions made by other researchers in the past and with measurements from our own experimentation. The case under consideration consists of a slender, aluminum crash-box structure (a bumper) with a truncated pyramid shape subjected to a concentrated load on the top (axial crushing) up to a 46% reduction in its height. The system is characterized by high deformations (>15%) and large displacements. This presents a complex situation with various nonlinear effects, where the chosen assumptions in material modeling can have significant implications for the results, both in terms of accuracy and computational time. Among the investigated aspects, of no less importance are those related to the appropriate modeling of the elasto-plastic-hardening behavior of the metallic material.

show abstract

Section: Samples and Experimentsmentioning

confidence: 99%

Enhanced Predictive Model for the Mechanical Response of Compression-Loaded Slender Structures

Fragassa

Pavlović

2023

Metals

View full text Add to dashboard Cite

show abstract

“…Song and Du [3] investigated four types of round composite tubes, [±75] 3 glass/polyester, [0 ± 75] 2 glass/epoxy, [±15] 3 glass/polyester and [±15] 3 glass/ epoxy under off-axis loadings to examine how the ply pattern and off-axis angle affected the energy absorption performances. More recently, Othman and Jailani [4] applied a numerical analysis to study the impact dynamic effects of crush performance of the tapered cross-section tubes, containing straight, single taper, double taper, taper triple and fourth tapered lightweight polyurethane foam filled alloy steel thin-walled tube. In their work an off-axis angle load dynamic effects in front of crash were examined at an angle of 0, 5, 10, 15 and 20 degrees.…”

Section: Introductionmentioning

confidence: 99%

Controllable Crack Propagation in Off-Axis Crushing of Stitched Composite Absorbers

Ghafari-Namini¹,

Ghasemnejad²

2015

OJCM

View full text Add to dashboard Cite

Crack growth resistance plays a different role in crashworthiness analysis since the progressive energy absorption is based on controllable fracture mechanisms. In this regard, the present paper studies the efficient crack growth resistance in off-axis crushing of composite tubular structures by implementing natural fiber yarns. One of the through-to-thickness reinforcement methods known as stitching has been chosen to influence the axial and off-axis crushing process. Improving the crack growth resistance and appropriate fiber breakage at different stages of crushing process can significantly improve the resistance force and consequently the energy absorption capability of composite absorbers in axial and off-axis crushing. This analysis will be applied to non-stitched and stitched CFRP composite boxes which showed brittle fracture and transverse shearing crushing modes under off-axis loading of 10 degrees. The analytical methods are also implemented to analysze the effect of various failure mechanisms such as bending, friction, bundle fracture, and interlaminar crack growth for the observed crushing modes. The proposed model is able to predict the crushing load and crush force efficiency in close agreement from experimental studies.

show abstract

Quasi-static axial crushes on woven jute/polyester AA6063T52 composite tubes

Othman

Ismail

2018

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Off-Axis Crushes Simulation of Thin-walled Tapered Tubes Inserted with Foam-filled Structures

Cited by 4 publications

References 7 publications

Enhanced Predictive Model for the Mechanical Response of Compression-Loaded Slender Structures

Enhanced Predictive Model for the Mechanical Response of Compression-Loaded Slender Structures

Controllable Crack Propagation in Off-Axis Crushing of Stitched Composite Absorbers

Quasi-static axial crushes on woven jute/polyester AA6063T52 composite tubes

Contact Info

Product

Resources

About