The studies envisioned a low-speed impact by a plane lost in fog, he said.
Uehara, J. S., Ambroso, M. A., Ojha, R. P. & Durian, D. J. Low-speed impact craters in loose granular media.
The low-speed impact test was simulated under the same conditions in Abaqus V16R9 software.
Panels with and without low-speed impact damage were loaded to failure in compression.
Bumper beam absorbs the accidental kinetic energy by deflection in low-speed impact and by deformation in high-speed impact.
The problem of low-speed impact of a one-dimensional sandwich panel by a rigid cylindrical projectile is considered.
Thus, we achieve a unified description of low-speed impact phenomena and show that the complex response of granular materials to impact, although fundamentally different from that of liquids and solids, can be simply understood.
Experiments on the low-speed impact of solid objects into granular media have been used both to mimic geophysical events1,2,3,4,5 and to probe the unusual nature of the granular state of matter6,7,8,9,10.
Furthermore, dynamic impact tests based on drop weight device are conducted to demonstrate the cushioning effect of zeolite β/water system under low-speed impact.
In the present work we present a systematic experimental investigation of the generation and subsequent evolution of dynamic failure modes in sandwich structures subjected to low-speed impact.
First, a finite element model considering elastic-plastic, damage, and failure behaviours of the composites by using continuum damage mechanics is developed and validated by a normal low-speed impact test.
