Ferrocement Panels under High Velocity Impact by Incorporating Waste Foundry Sand

Ferrocement is widely used because of its excellent behavior pf ferrocement under flexural, and impact strength. Ferrocement also has excellent mechanical properties. In this study, total 16 ferrocement panels were modelled of M50 grade of concrete. The thickness of ferrocement panels considered is 15mm, 20mm and 25mm. Galvanized welded mesh is used as reinforcement in panels. This wire-meshes were layered in 2, 3, 4 and 5 layers. High velocity impact test is done by Ak-47 bullet striking with a velocity of 150, 250, 350, 450, 550, 650 and 750 m/s for each panel. All this panels were modelled in design modeler of Ansys explicit Dynamics. Deformation, Equivalent Stress and Normal Stress of all the panels are evaluated and compared by analyzing in ANSYS Explicit Dynamics. From the past researches and the conclusions made by these researches, we can see positive chance in the utilization of waste foundry sand in construction field. As these results gives the great emphasis towards the development on environment friendly and economical constructions.

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High-Velocity Impact on Composite Sandwich Structures: A Theoretical Model

International Journal of Mechanical Sciences ◽

10.1016/j.ijmecsci.2021.106459 ◽

2021 ◽

pp. 106459

Author(s):

L. Alonso ◽

A. Solis

Keyword(s):

Theoretical Model ◽

High Velocity ◽

Sandwich Structures ◽

High Velocity Impact ◽

Velocity Impact ◽

Composite Sandwich ◽

Composite Sandwich Structures

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Effect of strain rate, off-axis loading and high-velocity impact damage on the compressive strength of C/SiC composite

Journal of Composite Materials ◽

10.1177/0021998318787618 ◽

2018 ◽

Vol 53 (4) ◽

pp. 535-546 ◽

Cited By ~ 1

Author(s):

M Altaf ◽

S Singh ◽

VV Bhanu Prasad ◽

Manish Patel

Keyword(s):

Compressive Strength ◽

Strain Rate ◽

High Velocity ◽

Impact Damage ◽

The Other ◽

High Velocity Impact ◽

Fibre Bundles ◽

Velocity Impact ◽

Kink Bands ◽

Other Hand

The compressive strength of C/SiC composite at different strain rates, off-axis orientations and after high-velocity impact was studied. The compressive strength was found to be 137 ± 23, 130 ± 46 and 162 ± 33 MPa at a strain rate of 3.3 × 10−5, 3.3 × 10−3, 3.3 × 10−3 s−1, respectively. On the other hand, the compressive strength was found to be 130 ± 46, 99 ± 23 and 87 ± 9 MPa for 0°/90°, 30°/60° and 45°/45° fibre orientations to loading direction, respectively. After high-velocity impact, the residual compressive strength of C/SiC composite was found to be 58 ± 26, 44 ± 18 and 36 ± 3.5 MPa after impact with 100, 150 and 190 m/s, respectively. The formation of kink bands in fibre bundles was found to be dominant micro-mechanism for compressive failure of C/SiC composite for 0°/90° orientation. On the other hand, delamination and the fibre bundles rotation were found to be the dominant mechanism for off-axis failure of composite.

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Analysis of High Velocity Impact on Hybrid Composite Fan Blades

Journal of Aircraft ◽

10.2514/3.57963 ◽

1980 ◽

Vol 17 (10) ◽

pp. 763-766 ◽

Cited By ~ 2

Author(s):

C. C. Chamis ◽

J. H. Sinclair

Keyword(s):

Hybrid Composite ◽

High Velocity ◽

High Velocity Impact ◽

Velocity Impact

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Apparatus for investigating the effects of high-velocity impact on polymers

Polymer Mechanics ◽

10.1007/bf00855558 ◽

1972 ◽

Vol 5 (5) ◽

pp. 812-813

Author(s):

V. V. Kovriga ◽

V. N. Chalidze

Keyword(s):

High Velocity ◽

High Velocity Impact ◽

Velocity Impact

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Shape optimization of bumper beams under high-velocity impact loads

Engineering Structures ◽

10.1016/j.engstruct.2015.03.046 ◽

2015 ◽

Vol 95 ◽

pp. 49-60 ◽

Cited By ~ 25

Author(s):

Niyazi Tanlak ◽

Fazil O. Sonmez ◽

Mahmut Senaltun

Keyword(s):

Shape Optimization ◽

High Velocity ◽

Impact Loads ◽

High Velocity Impact ◽

Velocity Impact

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Crack Propagation and Local Failure Simulation of Reinforced Concrete Subjected to Projectile Impact Using RBSM

Volume 9: Prof. Norman Jones Honoring Symposium on Impact Engineering; Prof. Yukio Ueda Honoring Symposium on Idealized Nonlinear Mechanics for Welding and Strength of Structures ◽

10.1115/omae2016-54969 ◽

2016 ◽

Cited By ~ 1

Author(s):

Yoshihito Yamamoto ◽

Soichiro Okazaki ◽

Hikaru Nakamura ◽

Masuhiro Beppu ◽

Taiki Shibata

Keyword(s):

Reinforced Concrete ◽

Crack Propagation ◽

High Velocity ◽

Failure Modes ◽

Concrete Structures ◽

Constitutive Models ◽

Local Failure ◽

High Velocity Impact ◽

Velocity Impact ◽

Projectile Impact

In this paper, numerical simulations of reinforced mortar beams subjected to projectile impact are conducted by using the proposed 3-D Rigid-Body-Spring Model (RBSM) in order to investigate mechanisms of crack propagation and scabbing mode of concrete members under high-velocity impact. The RBSM is one of the discrete-type numerical methods, which represents a continuum material as an assemblage of rigid particle interconnected by springs. The RBSM have advantages in modeling localized and oriented phenomena, such as cracking, its propagation, frictional slip and so on, in concrete structures. The authors have already developed constitutive models for the 3D RBSM with random geometry generated Voronoi diagram in order to quantitatively evaluate the mechanical responses of concrete including softening and localization fractures, and have shown that the model can simulate cracking and various failure modes of reinforced concrete structures. In the target tests, projectile velocity is set 200m/s. The reinforced mortar beams with or without the shear reinforcing steel plates were used to investigate the effects of shear reinforcement on the crack propagation and the local failure modes. By comparing the numerical results with the test results, it is confirmed that the proposed model can reproduce well the crack propagation and the local failure behaviors. In addition, effects of the reinforcing plates on the stress wave and the crack propagation behaviors are discussed from the observation of the numerical simulation results. As a result, it was found that scabbing of reinforced mortar beams subjected to high velocity impact which is in the range of the tests is caused by mainly shear deformation of a beam.

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