An analytical study of the plasticity of sandwich honeycomb panels subjected to low-velocity impact

Sun, Mengqian; Wowk, Diane; Mechefske, Christopher; Kim, Il Yong

doi:10.1016/j.compositesb.2018.12.071

Cited by 38 publications

(6 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Over the years, honeycomb structures (HS) have been found to be effective in improving EA capacity, are widely used in the field of impact resistance [ 29 ] and are a common method in practical projects to achieve the goal of lightening the buffer interlayer [ 30 , 31 , 32 ]. As humans deepen their exploration of nature, HS also draw many inspirations from animals and plants [ 33 , 34 , 35 , 36 , 37 ].…”

Section: Introductionmentioning

confidence: 99%

Protective Behaviors of Bio-Inspired Honeycomb Column Thin-Walled Structure against RC Slab under Impact Loading

Wang

Xia

2023

Biomimetics

View full text Add to dashboard Cite

In order to protect the reinforced concrete (RC) slab structure from damage under some accidental conditions, such as impacting and explosion, we used bio-inspired honeycomb column thin-walled structure (BHTS) to serve as a buffer interlayer for the concrete structure inspired by the biological structure of beetle’s elytra. The mechanical properties of AlSi10Mg used to fabricate the BHTS buffer interlayer were determined by low- and medium-speed uniaxial compression tests and numerical simulations. Subsequently, based on the drop weight impact test models, the effect of the buffer interlayer on the response of the RC slab under the drop weight tests with different energy input was compared by the impact force and duration, maximum displacement and residual displacement, energy absorption (EA), energy proportion, and other indicators. The results show that the proposed BHTS buffer interlayer has a very significant protection effect on the RC slab under the impact of the drop hammer. Due to its superior performance, the proposed BHTS buffer interlayer provides a promising solution for EA of augmented cellular structures widely used in defensive structural components, such as floor slabs, building walls, etc.

show abstract

Section: Introductionmentioning

confidence: 99%

Protective Behaviors of Bio-Inspired Honeycomb Column Thin-Walled Structure against RC Slab under Impact Loading

Wang

Xia

2023

Biomimetics

View full text Add to dashboard Cite

show abstract

“…The numerical model successfully described the essential perforation mechanisms associated with damage patterns and exhibited accurate predictions of total energy absorption, among others. Zhang et al [21] and Sun et al [22] separately formulated simulation and theoretical models that could better predict the damage dent response. Feng et al [23] proposed a progressive damage model based on continuum damage mechanics.…”

Section: Introductionmentioning

confidence: 99%

Experiment and Numerical Simulation on Damage Behavior of Honeycomb Sandwich Composites under Low-Energy Impact

Zheng,

He,

Zou

et al. 2023

Aerospace

View full text Add to dashboard Cite

It is well-established that the honeycomb sandwich composite structures are easily prone to damage under low-energy impact. Consequently, it would lead to a dramatic decrease in structural load-bearing capacity and a threat to overall safety. Both experimental and numerical simulations are carried out to investigate the impact damage behavior of honeycomb sandwich composite specimens. The damage mode, damage parameters, and contact force-time curves of three types of panel materials with T300, T700, and T800 are obtained under different impact energies of 10 J, 20 J, and 40 J by the drop-weight impact experiment. Moreover, digital image correlation (DIC) tests are used to measure the deformation and strain of the lower panel. The experimental results reveal that the degree of damage increases with increasing impact energy. Particularly, the T300 panel specimen exhibits visible fiber fracture when subjected to an impact energy of 40 J. The impact process involves matrix cracking, fiber fracture, and delamination of the upper panel occurring first, followed by immediate crush damage to the honeycomb core and, finally, slight fiber damage to the lower panel. Due to its higher strength, the T800 panel specimen exhibits the highest damage resistance compared to the T700 and T300 panel specimens. To consider the microscopic failure criteria and various types of contact during the impact process, a finite element model of honeycomb sandwich composites is established, and numerical simulation analysis of low-energy impact is performed to determine the damage mode, damage size, and contact-force curves. Comparative analysis demonstrates good agreement between the simulation and experimental results. The findings of this study provide valuable technical support for the widespread application of honeycomb sandwich composites in the aviation field.

show abstract

“…In numerous experimental, computational and theoretical methods, it had been shown that components, geometric parameters, and core characteristics can significantly affect mechanical performance. [2][3][4][5] Many of the benefits of sandwich panels include lightweight structures with high mechanical performance and excellent insulation, ensures continued demand for sandwich panels. In the polymer composite industry, there is an increasing interest in the use and production of synthesized materials from sustainable sources, due to their lightweight, high specific bending stiffness and strength under distributed loads, as well as their good energy absorbing capacity.…”

Section: Introductionmentioning

confidence: 99%

Lightweight biodegradable hybrid composite sandwich panel under three‐point bending loads—Experimental and numerical

2022

View full text Add to dashboard Cite

In this research, the flexural behavior of lightweight biodegradable sandwich panel consisting of the outer green composite facesheets with polylactic acid (PLA) matrix and natural kenaf and cotton fibers, with five various stacking types of standard cardboard egg boxes cores under three-point bending loads as an environmentally friendly alternative to conventional synthetic sandwich structures is investigated. The stiffness of this structure in bending is also studied using finite element simulations. The thickest specimen absorbed the most energy during flexural testing, however, the specimens containing two egg boxes inside each other were found to have a higher strength and stiffness. Using finite element method simulations to investigate the influence of composite facesheet thickness on flexural loads, it was found that the amount of the load carried by each sandwich specimen with doubled thickness was increased at least by about 50%. By changing the core's material from cardboard egg box to bamboo/PLA or kenaf-cotton/PLA egg boxes, stiffness and strength and also the energy absorption were significantly increased. Therefore, it is possible to fabricate composite sandwich structures which are light and biodegradable for green environment and has the potential to replace many plastic products and structures that are used in food packaging and medium loads structures applications.

show abstract

An analytical study of the plasticity of sandwich honeycomb panels subjected to low-velocity impact

Cited by 38 publications

References 54 publications

Protective Behaviors of Bio-Inspired Honeycomb Column Thin-Walled Structure against RC Slab under Impact Loading

Protective Behaviors of Bio-Inspired Honeycomb Column Thin-Walled Structure against RC Slab under Impact Loading

Experiment and Numerical Simulation on Damage Behavior of Honeycomb Sandwich Composites under Low-Energy Impact

Lightweight biodegradable hybrid composite sandwich panel under three‐point bending loads—Experimental and numerical

Contact Info

Product

Resources

About