Finite Element Analysis and Crashworthiness Optimization of Foam-filled Double Circular under Oblique Loading

Abstract

Finite element analysis and optimization design carry out for the quasi static responses of foam-filled double circular tube is presented in this paper. In the investigation of the crashworthiness capability, some aspects were considered for variations in geometry parameters of tubes and the loading condition to investigate the crashworthiness capability. Empty, foam-filled, and full foam-filled doublé tubes of thin walled structures were observed subjected to oblique impact (0˚ -40˚). The numerical solution was used to determine the crashworthiness parameters. In addition, NSGA II and Radial Basis Function were used to optimize the crashworthiness capability of tubes. In conclution, the crash performaces of foam-filled double tube is better than the other structures in this work. The outcome that expected is the new design information of various kinds of cylindrical tubes for energy absorber application.

Review: deformation and optimisation crashworthiness method for foam filled structures

“…Notwithstanding, empty tubes and aluminium foams have also been studied where comparisons of energy absorption were adopted. Circular foam-filled double tubes have also been used in experimental investigations and numerical methods in order to devel-op a topological structure with axial loading conditions (Guo and Yu 2010) and three-point flexibility (Guo and Yu 2011) and oblique loading (Djamaluddin et al 2015a(Djamaluddin et al , 2016. Figure 8 shows the filled foam on a double tube subjected to axial impact.…”

“…Here they found that tapered tubes with multiple cells had the best fluency performance. While Song and Guo (2013); Djamaluddin et al (2015cDjamaluddin et al ( , 2016; found that the effectiveness of multi-cell configuration could increase energy absorption by increasing the load angle and multi-cell tubes which could also worsen performance if the structure collapsed in a pure global bending mode. Fang et al (2015) investigated multiple cell tubes having different cell numbers comprehensively under both axial and oblique loads where the results indicated that the load angle for different cells had lower crashworthiness performance compared to single cells.…”

Validation of foam filled tube model and optimization result using Weibull distribution

“…This technique is an effective tool commonly used to construct an approximation function for crashworthiness design and aids engineers in achieving optimum parameters of foam-filled thin-walled structure (Fang et al, 2014). According to Bi et al (2010), optimized foam-filled columns with respect to tubular geometry and different foam densities was carried out to achieve the maximum SEA and Mean Crushing Force (MCF), (Djamaluddin et al, 2016) (Djamaluddin et al, 2019). The optimization results show that SEA increases in both single-cell and three-cell tubes due to the thickness of the tubular walls and foam densities.…”

Definición geométrica de andamios metálicos para posibles aplicaciones en ingeniería de tejidos

“…Así mismo, para el caso de los metales celulares de carácter ordenado, se están evaluando geometrías de poliedros como celdas representativas, entre las que se encuentran que incluyen hexaedros, octaedros truncados, hexaedros truncados, cuboctaedros, rombicuboctaedros, cuboctaedros rombitruncados entre otros [21]. Sin embargo, el diseño geométrico y estructural de estos andamios, ha sido abordado de una manera aislada, dejando ver un campo de exploración en el diseño de un modelo geométrico que además incluya secciones continuas y material esponjoso interno; combinación que ha demostrado tener aplicaciones de gran interés [22], [24].…”