Aerospace Knowledge and Technology Journal

Aerospace Knowledge and Technology Journal

Investigation of Low-Velocity Impact Response in Foam-Filled Corrugated-Core Sandwich Panels

Document Type : Research Paper

Authors
Pooya Pirali 1
Mohsen Heydari Beni 2
Hamid Safarzadeh 3
Jafar Eskandari Jam 4
1 Assistant Professor, Materials and Manufacturing Technologies Academic Complex, Malek Ashtar University of Technology, Tehran, Iran
2 Ph.D Student, Materials and Manufacturing Technologies Academic Complex, Malek Ashtar University of Technology, Tehran, Iran
3 Master's Student, Materials and Manufacturing Technologies Academic Complex, Malek Ashtar University of Technology, Tehran, Iran
4 Professor, Materials and Manufacturing Technologies Academic Complex, Malek Ashtar University of Technology, Tehran, Iran
Abstract
Today, the use of sandwich structures is increasing due to their good properties. sandwich panels consisting of face sheets and metal foam core are widely used for low velocity impact resistance. In this research, by studying the behavior of aluminum foam and using it in three type of sandwich structures with rectangular, trapezoidal and triangular corrugated cores, we have tried to experimentally and numerically investigate their energy absorption properties under low velocity impact. These tests were performed using a flat head impactor on corrugated core sandwich panels with and without aluminum foam. Also the process of modeling and analysis of samples has been done using Abacus software. Experimental test of low velocity impact were also performed to verify the simulation results by a drop weight device. Failure modes, energy absorption diagrams and energy absorption contribution of each component are discussed. The results show that the use of aluminum foam significantly increases the capacity and improves the process of energy absorption of the structure and prevents the penetration of impactor on the panel. Also, the results show that rectangular, trapezoidal and triangular corrugated cores have different behavior in absorbing energy and preventing impactor penetration; So that the rectangular corrugated core has a better and faster absorption process and prevents the penetration of the impactor into the panel more than the other two corrugated cores.
Keywords
Sandwich panel
aluminum foam
low-velocity impact
numerical simulation
finite element method
Subjects
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