Numerical and Experimental Impact Analysis of Square Crash Box Structure with Holes

Dirgantara, Tatacipta; Gunawan, Leonardo; Putra, Ichsan Setya; Sitompul, Sahril Afandi; Jusuf, Annisa

doi:10.4028/www.scientific.net/amm.393.447

Cited by 14 publications

(7 citation statements)

References 8 publications

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“…Penambahan lubang pada crash box penampang persegi dengan perbedaan rasio lebar dapat meningkatkan penyerapan energi impact dalam buckling progresif. Hal tersebut dikarenakan lokasi pertama terjadinya deformasi plastis berawal dari lubang sehingga mengakibatkan peak crush force menurun dan mean crushing Force relatif konstan [14]. Optimasi posisi lubang dan ketebalan conical absorbers menggunakan algoritma NSGA-III dan MOEA/D.…”

Section: Pendahuluanunclassified

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Optimasi Parameter Desain Multi-Cell Hexagonal Crash Box terhadap Absorbsi Energy Impact dengan Metode Taguchi

Rismanto

Choiron

Sugiono

2020

JRM

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The crash box is a passive safety system placed between the bumper and the mainframe of the car that functions as an energy absorber to reduce the impact of driving accidents. The purpose of this study is to determine the optimal level of factors and analyze the factors that provide the most significant effect on energy absorption in a multi-cell hexagonal crash box. Identification of parameters that affect the crash box in energy absorption, namely: the position of placement hole (P), the distance of position hole (L), the thickness of crash box (t), and the hole diameter (D). The modeling method has used the design of the crash box by utilizing a computer simulation with software ANSYS 17.0. This research uses aluminum material type AA 6061-T4 and impactor material uses structural steel. Modeling loading using the frontal crash test method. In this modeling, the impactor with a speed of 7.67 m/s with a deformation length of 100 mm. This research uses the experimental design of the Taguchi method with the L27 orthogonal array. The optimization result were obtained optimum design parameter multi-cell hexagonal crash box with parameter settings P = inner wall; L = 112.5 mm; t = 2 mm, and D = 6.6 mm. Based on the calculated F value ≥ F Table, the factors P, t, and D affect the ability to absorb energy. Thickness crash box (t) has the highest contribution of 98.10% in increasing the value of energy absorption.

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Section: Pendahuluanunclassified

“…Crash box dengan penambahan lubang, folding yang terjadi pertama selalu dimulai di lokasi lubang. Oleh karena itu, lubang bertindak sebagai ketidaksempurnaan awal pada crash box [14].…”

Section: Pola Deformasi Multi-cell Hexagonal Crash Boxunclassified

Optimasi Parameter Desain Multi-Cell Hexagonal Crash Box terhadap Absorbsi Energy Impact dengan Metode Taguchi

Rismanto

Choiron

Sugiono

2020

JRM

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“…Dengan menggunakan lubang lingkaran yang diletakkan pada kolom struktur berdinding tipis juga diuji benturan untuk menurunkan gaya tumbukan maksimum dan meningkatkan penyerapan enerrgi yang terjadi saat benturan (Dirgantara, et al, 2013;Estrada, et al, 2017;Malawat, et al, 2017;Nghia, et al, 2014;Mamalis, et al, 2009;Subramaniyan, et al, 2014;Istiyanto, et al, 2014). Selain itu dengan variasi posisi atau jarak lubang lingkaran dari ujung spesimen struktur tabung juga sudah diteliti oleh Estrada dkk (Estrada, et al, 2017) serta Malawat dkk (Malawat, et al, 2017).…”

Section: Pendahuluanunclassified

Analisis Dampak Gaya Tumbukan Melalui Perubahan Bentuk Segi Crush Initiator Pada Struktur Tailor-Welded Blank

Dionisius

Wasiah

Istiyanto

et al. 2019

JTT

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Tailor-welded blank (TWB) structure is one of the vehicle component models used in vehicle parts. In addition, these structures can be used in crashworthiess technology which can reduce injuries during a collision.. The structure of a vehicle that has greater strength can cause passengers to be thrown from the passenger compartment. This paper discusses the effect of faceted holes such as square, hexagonal and octagonal as crush initiator mounted on TWB which results in a maximum impact force (Fmax). The smallest maximum impact force is the criteria achieved from this study. The method used experimental quasi-static loading of the actuator speed of 0.5 mm/s to achieve 9.5 mm of deformation. TWB was made from plate formation with a process of stamping to spot weld. The result showed that the maximum impact force has an increase directly proportional to the addition of the shape of the crush initiator in the amount of 14.633 kN to 18.705 kN. From these results, it can be seen a square hole as best design in obtaining the smallest maximum impact force.

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“…This deformation should be plastic, not elastic, to avoid a rebound of the object/person and consequently minimize deceleration and damage/injury values. Hadrys et al [4] studied deceleration and deformation under real conditions, while Dirgantara et al [5] numerically and experimentally investigated a crash box structure with holes. These holes decreased the initial peak force prior to buckling, thereby reducing decelerations levels.…”

Section: Introductionmentioning

confidence: 99%

High-Compression Crash Simulations and Tests of PLA Cubes Fabricated Using Additive Manufacturing FDM with a Scaling Strategy

Garcia-Granada

2024

Computation

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Impacts due to drops or crashes between moving vehicles necessitate the search for energy absorption elements to prevent damage to the transported goods or individuals. To ensure safety, a given level of acceptable deceleration is provided. The optimization of deformable parts to absorb impact energy is typically conducted through explicit simulations, where kinetic energy is converted into plastic deformation energy. The introduction of additive manufacturing techniques enables this optimization to be conducted with more efficient shapes, previously unachievable with conventional manufacturing methods. This paper presents an initial approach to validating explicit simulations of impacts against solid cubes of varying sizes and fabrication directions. Such cubes were fabricated using PLA, the most used material, and a desktop printer. All simulations could be conducted using a single material law description, employing solid elements with a controlled time step suitable for industrial applications. With this approach, the simulations were capable of predicting deceleration levels across a broad range of impact configurations for solid cubes.

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Numerical and Experimental Impact Analysis of Square Crash Box Structure with Holes

Cited by 14 publications

References 8 publications

Optimasi Parameter Desain Multi-Cell Hexagonal Crash Box terhadap Absorbsi Energy Impact dengan Metode Taguchi

Optimasi Parameter Desain Multi-Cell Hexagonal Crash Box terhadap Absorbsi Energy Impact dengan Metode Taguchi

Analisis Dampak Gaya Tumbukan Melalui Perubahan Bentuk Segi Crush Initiator Pada Struktur Tailor-Welded Blank

High-Compression Crash Simulations and Tests of PLA Cubes Fabricated Using Additive Manufacturing FDM with a Scaling Strategy

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