NUMERICAL AND EXPERIMENTAL ANALYSES PROJECTILE PENETRATION IN GRID CYLINDRICAL COMPOSITE STRUCTURES UNDER HIGH VELOCITY IMPACT

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HEDAYATIAN MOHAMMAD; LIAGHAT GHOLAMHOSSEIN; RAHIMI GHOLAM HOSSEIN; POL MOHAMMAD HOSSEIN

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Journal: Modares Mechanical Engineering Year:2014 | Volume:14 | Issue:9 Page(s): 17-26

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Title

NUMERICAL AND EXPERIMENTAL ANALYSES PROJECTILE PENETRATION IN GRID CYLINDRICAL COMPOSITE STRUCTURES UNDER HIGH VELOCITY IMPACT

Author(s)

HEDAYATIAN MOHAMMAD | LIAGHAT GHOLAMHOSSEIN | RAHIMI GHOLAM HOSSEIN | POL MOHAMMAD HOSSEIN | Issue Writer Certificate

Keywords

GRID COMPOSITEQ2

DAMAGEQ2

FRACTUREQ1

BALLISTIC IMPACTQ2

NUMERICAL MODELINGQ2

Abstract

In this investigation, kinked crack path of friction stir Cu-Al7075-T6 alloy welded joints in fourpoint bending test conditions has been studied as well as the fatigue lifetime of the welded joints, numerically and experimentally. To do so, four-point bending and fatigue tests of welded specimens have been carried out and the experimental fatigue test data and the kinked crack angles in bending tests have been extracted. Maximum Tangential Stress (MTS) and (KII) min criteria have been used for estimating the kinked crack angles, and Paris law has been applied to predict fatigue crack propagation life of the welded specimens. Functionally graded materials concept has been employed for determining mechanical properties of different regions of welded joints. To do so, the mechanical properties of the weld region such as Young's Modulus and Poisson's ratio have been considered to be linear functions of the positions of the weld region points. It has been shown that, when the original notch is close to the material with the higher FRACTURE toughness (Copper), the kinked crack angle becomes smaller. The results show good agreement between the experimental data and numerical estimations.

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APA: Copy

HEDAYATIAN, MOHAMMAD, LIAGHAT, GHOLAMHOSSEIN, RAHIMI, GHOLAM HOSSEIN, & POL, MOHAMMAD HOSSEIN. (2014). NUMERICAL AND EXPERIMENTAL ANALYSES PROJECTILE PENETRATION IN GRID CYLINDRICAL COMPOSITE STRUCTURES UNDER HIGH VELOCITY IMPACT. MODARES MECHANICAL ENGINEERING, 14(9), 17-26. SID. https://sid.ir/paper/177783/en

Vancouver: Copy

HEDAYATIAN MOHAMMAD, LIAGHAT GHOLAMHOSSEIN, RAHIMI GHOLAM HOSSEIN, POL MOHAMMAD HOSSEIN. NUMERICAL AND EXPERIMENTAL ANALYSES PROJECTILE PENETRATION IN GRID CYLINDRICAL COMPOSITE STRUCTURES UNDER HIGH VELOCITY IMPACT. MODARES MECHANICAL ENGINEERING[Internet]. 2014;14(9):17-26. Available from: https://sid.ir/paper/177783/en

IEEE: Copy

MOHAMMAD HEDAYATIAN, GHOLAMHOSSEIN LIAGHAT, GHOLAM HOSSEIN RAHIMI, and MOHAMMAD HOSSEIN POL, “NUMERICAL AND EXPERIMENTAL ANALYSES PROJECTILE PENETRATION IN GRID CYLINDRICAL COMPOSITE STRUCTURES UNDER HIGH VELOCITY IMPACT,” MODARES MECHANICAL ENGINEERING, vol. 14, no. 9, pp. 17–26, 2014, [Online]. Available: https://sid.ir/paper/177783/en

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