Multi-objective optimization design of a multi-layer honeycomb sandwich structure under blast loading

Wang, Zongqian; Zhou, Yifei; Wang, Xianhui; Zhang, Xinlei

doi:10.1177/0954407016672606

Cited by 16 publications

(5 citation statements)

References 16 publications

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“…The indicators for evaluating the protective performance of armored vehicles mainly fall into two categories: vehicle and occupant. Based on vehicle evaluation criteria, the focus is on whether the deflection peaks of protective components and the vehicle's bottom armor plate are within design limits, and whether there is penetration damage to materials [8]. This assessment involves both stress-based strength criteria and displacement-based stiffness criteria.…”

Section: Human Injury Assessment Indicatorsmentioning

confidence: 99%

Study on physiological injuries of occupants under vertical impact loads

Qin,

Wang,

Sun

et al. 2024

J. Phys.: Conf. Ser.

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Under vertical impact loads, such as explosions, serious compressive deformation occurs in the pelvic bones and lumbar vertebrae of the human body leading to injuries or fatalities for occupants. This study focuses on the occupant-seat model in military vehicles, establishes a biomechanical model of the human spine, and establishes the relationship between vertical impact loads and human injuries. Subsequently, a C-shaped energy-absorbing cushioning structure is designed for application at the bottom support of the seat. Using a peak value of 50 g explosion-simulated triangular wave loading, the study compares the attenuation effects of different structural characteristics of cushioning energy-absorbing structures on impact loads. The results indicate that a 50 g peak vertical impact load can cause significant human injuries. The designed energy-absorbing cushioning structure can greatly reduce human response, but both excessively soft and rigid energy-absorbing cushioning structures fail to achieve effective impact attenuation.

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Section: Human Injury Assessment Indicatorsmentioning

confidence: 99%

Study on physiological injuries of occupants under vertical impact loads

Qin,

Wang,

Sun

et al. 2024

J. Phys.: Conf. Ser.

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“…Resulting from the use of numerical analysis techniques, optimization of such structures using derivative-based approaches that require gradient information are less common with none found in the literature for FEA analysis cases. Furthermore, many examples of multiobjective optimization problems can be found, which further restricts the choice of optimizer if all objectives are to be considered (Namvar and Vosoughi, 2020;Paz et al, 2014Paz et al, , 2015Wang et al, 2017;Yin et al, 2011). The most common choices for an optimizer found for these problems have been surrogate optimization (Paz et al, 2014(Paz et al, , 2015Sun et al, 2010), and evolutionary and heuristic optimization techniques (Huang et al, 2021;Namvar and Vosoughi, 2020;Schultz et al, 2011;Wang et al, 2017;Yin et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, many examples of multiobjective optimization problems can be found, which further restricts the choice of optimizer if all objectives are to be considered (Namvar and Vosoughi, 2020;Paz et al, 2014Paz et al, , 2015Wang et al, 2017;Yin et al, 2011). The most common choices for an optimizer found for these problems have been surrogate optimization (Paz et al, 2014(Paz et al, , 2015Sun et al, 2010), and evolutionary and heuristic optimization techniques (Huang et al, 2021;Namvar and Vosoughi, 2020;Schultz et al, 2011;Wang et al, 2017;Yin et al, 2011). Surrogate optimizations rely on fitting easily differentiable functions to computed designs in the objective space.…”

Section: Introductionmentioning

confidence: 99%

“…Among the available choices for cell design variables, sizing variables are found to be the most common choices (Beblo et al, 2012;Huang et al, 2021;Murray et al, 2012;Namvar and Vosoughi, 2020;Paz et al, 2014Paz et al, , 2015Schultz et al, 2011;Shu et al, 2022;Sun et al, 2010;Wang et al, 2017;Yin et al, 2011). These include cell thickness, wall lengths, wall thicknesses, cell cross section, and circumcircle lengths.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of single and multicell honeycomb reinforced shape memory polymer composites: Shape optimization and experimental characterization

Squibb,

Philen

2023

Journal of Intelligent Material Systems and Structures

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Honeycomb materials as reinforcements for shape memory polymers have been considered for their commercial availability, ease of geometric tailoring, and high in-plane stiffnesses. The design optimization of these honeycomb cells remains an open field of research, with many approaches taken in formulating the structural optimization problems. This investigation focuses on implementing a shape variable parametrization of the honeycomb to study the possible value of both cell asymmetry and spatially varying cell geometries in multicell networks. A unit cell finite element model framework was developed to predict the in-plane elastic properties of these composites, and two design objectives were selected to be optimized. Pareto fronts were estimated for multiple loading cases and cell wall material models, and experimental results were collected for model validation. The optimization results find that these composites can achieve a large range of performances, with maximum moduli as high as 17.2 GPa. Large asymmetry is found in the optimized cell geometries, and relationships are identified between loading cases and for different wall materials. Furthermore, the experimental results validate the finite element model predictions, with relative errors as low as 20% for the predicted maximum modulus and 2% for the modulus ratio.

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“…Explosion-resistant structure can absorb the explosive shock wave and prevent buildings and personnel from being seriously hit. Aluminum honeycomb structure is widely used as explosion-resistant structure for its high specific strength, high specific stiffness, and good energy absorption ability [1,2].…”

Section: Introductionmentioning

confidence: 99%

Study on Explosion‐Resistance of Biomimetic Layered Honeycomb Structure

Shi

Luo

et al. 2020

Advances in Civil Engineering

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A new type of explosion-resistant biomimetic layered honeycomb structure was designed based on the natural mechanism and biological inspiration, which was mainly composed of a sacrificial layer and a bearing layer. The shock tube device was adopted to analyze the dynamic response of the biomimetic layered honeycomb structure under the action of explosion load in order to obtain the deformation modality, deflection data, and strain time-history curve of the structure. It turns out that the maximum deformation deflection of the back panel of the structure is only 28 mm. Compared with the structure of single-layer honeycomb, the independent sacrificial layer, and bearing layer, the biomimetic layered honeycomb structure has good explosion-resistant performance and can repeatedly bear multiple explosion loads. Besides, equivalent homogenization theory was employed to carry out numerical simulation. The results show that the numerical simulation results are perfectly in line with the results of experiments, and the numerical simulation method is proven to be feasible and effective. Under the action of explosion load, the biomimetic layered honeycomb structure absorbs energy mainly by sacrificial layers that are in layered and staggered arrangement. In addition, the sharp rangeability of the kinetic energy of bearing layer structure indicates that it has the feature of large mass, which can be used as the bearing part of the biomimetic layered honeycomb structure.

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Multi-objective optimization design of a multi-layer honeycomb sandwich structure under blast loading

Cited by 16 publications

References 16 publications

Study on physiological injuries of occupants under vertical impact loads

Study on physiological injuries of occupants under vertical impact loads

Investigation of single and multicell honeycomb reinforced shape memory polymer composites: Shape optimization and experimental characterization

Study on Explosion‐Resistance of Biomimetic Layered Honeycomb Structure

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