Multiobjective crashworthiness optimization of multi-layer honeycomb energy absorber panels under axial impact

Crashworthiness optimisation of a composite energy-absorbing structure for subway vehicles based on hybrid particle swarm optimisation

“…Hussein et al (2017) Basically, the main challenge in the crashworthiness design and development of subway vehicles is how to find the optimal design of an EAS that can satisfy best the crashworthiness requirements. Optimisation of structural crashworthiness using surrogate models and intelligent algorithms is considered as a research focus in vehicle engineering (Fazilati and Alisadeghi 2016;Yin et al 2013;Forsberg and Nilsson 2005;Yin et al 2014). In aims to address the energy absorption behaviour and crashworthiness optimisation of short length circular tubes under quasi-static lateral loading, Baroutaji et al (2015) adopted the response surface methodology (RSM) and multi-objective optimisation design (MOD) to find the optimal configuration of a range of proposed energy absorption structures.…”

In-plane and out-of-plane compressive mechanical properties of Nomex honeycombs and their prediction

“…where M represents the mass of the honeycomb specimen. (8) Residual rate where H D and H 0 represent the height of honeycombs entering their densification phase and the initial height of each of the honeycombs, respectively. The residual rate μ is a dimensionless evaluation index, which reflects the effective rate of utilisation of materials in a honeycomb structure.…”

“…In addition, aluminium honeycomb structures are also an ideal energy absorber due to their advantages including low relative density, low stiffness, controllable deformation, stable impact force, etc. They exhibit prospects for broad application in various crashworthy buffer structures [6][7][8]. The dynamic and static mechanical characteristics of honeycomb [9][10][11][12] and honeycomb-filled [13,14] structures were investigated by using theoretical calculations, simulations, and various experimental techniques.…”

Multilayered Equivalent Finite Element Method for Embedded Honeycomb Plates

“…Figure 14 shows the frequency variation with different embedded depths of the plate for the first five modes. e frequencies clearly decrease (increase) with an increase in the embedded depth for modes 1, 2, and 4. e frequencies of modes 3 and 5 first increase and then decrease, and the inflection point is located at ∼7.5 mm depth, indicating a certain mutation between the embedded depth and the plate stiffness [11,[30][31][32][33].…”