Partial Al foam filling of commercial 1050H14 Al crash boxes: The effect of box column thickness and foam relative density on energy absorption

Toksoy, Ahmet Kaan; Güden, Mustafa

doi:10.1016/j.tws.2010.02.002

Cited by 49 publications

(13 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Parameters selected are shown in Table 4 [39]. The concrete ground is modeled using MAT_PLASTIC_KINEMATIC [40]. This model can describe the isotropic hardening and follow-up hardening plastic models, and can also consider the influence of strain rate.…”

Section: Materials Models and Equation Of Statementioning

confidence: 99%

Investigating Different Grounds Effects on Shock Wave Propagation Resulting from Near-Ground Explosion

Wang

Cui

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

A massive explosion of a liquid-propellant rocket in the course of an accident can lead to a truly catastrophic event, which would threaten the safety of personnel and facilities around the launch site. In order to study the propagation of near-ground shock wave and quantify the enhancement effect on the overpressure, models with different grounds have been established based on an explicit nonlinear dynamic ANSYS/LS-DYNA 970 program. Results show that the existence of the ground will change the propagation law and conform to the reflection law of the shock wave. Rigid ground absorbs no energy and reflects all of it, while concrete ground absorbs and reflects some of the energy, respectively. Ground may influence the pressure-time curve of the shock wave. When the gauge is close to the explosive, the pressure-time curve presents a bimodal feature, while when the gauge reaches a certain distance to the explosive, it presents a single-peak feature. For gauges at different heights, different grounds may have different effects on the peak overpressure. For gauges of height not greater than 4 m, the impact on the shock wave is obvious when the radial to the explosive is small. On the contrary, as for the gauges of height greater than 4 m, the impact on the shock wave is obvious when the radial to the explosive is big. Ground has the enhancement effect on peak overpressure, but different grounds have different ways. For rigid ground, the peak overpressure factor is about 2. However, for the concrete and soil ground, peak overpressure factor is from 1.43 to 2.1.

show abstract

Section: Materials Models and Equation Of Statementioning

confidence: 99%

Investigating Different Grounds Effects on Shock Wave Propagation Resulting from Near-Ground Explosion

Wang

Cui

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…Also, collision environments can be configured in a diversified manner by subjecting the automotive component to a simulation, and presenting the improvement guides for stability and durability through optimum designs. In this study, the mechanical characteristics were compared through compression tests for the crash box by playing a role of reducing the shocks upon a low-speed collision [10][11][12]. As shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Impact Characteristic According to the Structure of Crash Box at the Vehicle

Min

Cho

2017

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

The crash box between a bumper and a car body in automobiles can reduce impacts for car bodies with a bumper at a low-speed collision by preventing the shocks. Also, this crash box is the part playing a very important role for the safety of vehicle and the reduction of repair cost, and many studies have been investigated for the performance. In this study, aluminum foam was inserted in an aluminum crash box to analyze the relationships of deformation, stress and internal energy. The compression characteristics are compared with six cases. In addition, the load due to displacement at experiment for a case is verified by modeling with finite elements and performing the structural analysis. As these study results for investigating characteristics of the crash box, it is thought that the effective designs of crash box to enhance the durability for collision are made possible.

show abstract

“…The majority of studies have employed a press-fit technique in which pre-foamed closed cell aluminium foam is pressed into hollow tubes [7,[15][16][17][18][19][20][21][22][23][24][26][27][28][29][30][31][32][33][34][35][36][37]. As a multistep process, the press-fit technique is not very cost-effective and has some limitations e.g.…”

Section: Introductionmentioning

confidence: 99%