Investigation of novel multi-layer sandwich panels under quasi-static indentation loading using experimental and numerical analyses

High‐velocity impact behavior and quasi‐static indentation of new elastomeric nanocomposites reinforced with cellulose nanofibers and lignin powder

“…Investigating the damage caused by concentrated forces and knowing the characteristics of materials is of great importance to avoid design mistakes and develop a final, resistant product 48 . The behavior of the proposed nanocomposites reinforced with CNFs under quasi‐static indentation tests was studied using a universal compressive tensile testing machine 49 . Rubber nanocomposite sheets are placed together between two steel plates at the top and bottom and a hole in the center with a diameter of 100 mm.…”

“…48 The behavior of the proposed nanocomposites reinforced with CNFs under quasi-static indentation tests was studied using a universal compressive tensile testing machine. 49 Rubber nanocomposite sheets are placed together between two steel plates at the top and bottom and a hole in the center with a diameter of 100 mm. Indentation loading is applied through a penetrator tip with a diameter of 10 mm and a transverse speed of 500 mm/min for all samples.…”

Review of balsa core sandwich composite structures

“…Sandwich structures can be used in structural applications where the applied loading is localised rather than distributed, and therefore the indentation resistance is an important engineering property. The indentation properties of sandwich structures under localised static loads have been studied extensively using experimental tests, analytical models and finite element analysis [225][226][227][228][229][230][231][232][233][234]. The properties are usually determined by the low-rate indentation of the facesheet using a hemispherical ball, cylindrical rod or flat punch plate, which induce different indentation contact conditions.…”

Simulation study on deformation behavior of sandwich panels with corrugated cores

“…Many studies have been carried out on the static and dynamic behaviour of sandwich structures with different core topologies and basic materials under bending, impact/crushing, perforation and blast loads in recent years. As the core, metallic or and polymer [1][2][3][4][5][6][7][8][9] foams, woods [10], hexagonal [11][12][13][14][15][16] honeycombs, corrugated [17][18][19][20] and pyramidal [21][22][23] structures are used.…”