CALCULATION OF COLLISION SPEED CORRESPONDED TO MAXIMUM PENETRATION USING HYDRODYNAMIC THEORY

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NEZAMABADI A.R.

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Journal Paper

Paper Information

Journal: JOURNAL OF SOLID MECHANICS Year:2016 | Volume:8 | Issue:4 Page(s): 916-922

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Title

CALCULATION OF COLLISION SPEED CORRESPONDED TO MAXIMUM PENETRATION USING HYDRODYNAMIC THEORY

Author(s)

NEZAMABADI A.R. | Issue Writer Certificate

Keywords

HYDRODYNAMIC THEORY

TATE AND ALEKSEEVSKII’S THEORY

EROSION

RIGIDITY

OPTIMUM SPEED

MAXIMUM PENETRATION DEPTH

Abstract

One of the most valid and efficient models of long rod projectile penetration in homogeneous targets is Tate and Alekseevskii’s (A& t) model. Based on Tate’s model, the present research tries to calculate the OPTIMUM SPEEDs to achieve the MAXIMUM PENETRATION DEPTH in the homogeneous targets. The proposed collision speed-penetration depth diagrams are developed using Tate’s model. In this way, various collision speed-penetration depth diagrams for different projectile dynamic resistances and targets are calculated and the OPTIMUM SPEED envelope is derived. According to Tate’s diagrams, the increase of collision speed is not followed by the increase of penetration depth; instead, it causes EROSION phenomenon to happen. The comparison of the resulted optimum penetration speeds and the available data confirms the findings. Speed and RIGIDITY both have a positive impact on the increase of penetration depth. With the increase of speed, the EROSION issue finds a higher significance due to the increase of pressure on the projectile tip. Therefore, higher speed and EROSION are opposed to each other; for the case of Y>R, there are some maximum points which indicate the optimum reciprocity of the two mentioned factors to obtain a MAXIMUM PENETRATION DEPTH. In the present research, an equation is developed indicating the OPTIMUM SPEEDs resulting in the maximum penetration rate in the case of Y>R. For the reciprocity of speed and EROSION, the target resistance against an erosive projectile should be 4 to 5 fold higher than the same target resistance against a rigid projectile penetration.

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APA: Copy

NEZAMABADI, A.R.. (2016). CALCULATION OF COLLISION SPEED CORRESPONDED TO MAXIMUM PENETRATION USING HYDRODYNAMIC THEORY. JOURNAL OF SOLID MECHANICS, 8(4), 916-922. SID. https://sid.ir/paper/319446/en

Vancouver: Copy

NEZAMABADI A.R.. CALCULATION OF COLLISION SPEED CORRESPONDED TO MAXIMUM PENETRATION USING HYDRODYNAMIC THEORY. JOURNAL OF SOLID MECHANICS[Internet]. 2016;8(4):916-922. Available from: https://sid.ir/paper/319446/en

IEEE: Copy

A.R. NEZAMABADI, “CALCULATION OF COLLISION SPEED CORRESPONDED TO MAXIMUM PENETRATION USING HYDRODYNAMIC THEORY,” JOURNAL OF SOLID MECHANICS, vol. 8, no. 4, pp. 916–922, 2016, [Online]. Available: https://sid.ir/paper/319446/en

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