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contributor authorKong, Xiangzhen
contributor authorLi, Q. M.
contributor authorFang, Qin
date accessioned2017-11-25T07:21:05Z
date available2017-11-25T07:21:05Z
date copyright2016/09/27
date issued2016
identifier issn0021-8936
identifier otherjam_083_12_121008.pdf
identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4236873
description abstractThis paper presents an improved model for the critical impact yaw (or simply the critical yaw) in long-rod penetration with considering the deceleration and rotation of the rod and the crater shape of the target. Two critical yaws, θc1 and θc2, under normal impact were identified, below which there is no contact between the rod and crater sidewall (for θc1) and between the rod and the crater entrance (for θc2) during the entire penetration process. Contact functions and iterative algorithms were proposed in order to obtain these two critical yaws numerically. The influences of four dominant nondimensional numbers (i.e., the ratio of the target resistance to the rod strength λ, Johnson's damage number of the rod ς, square root of the target–projectile density ratio μ, and the diameter–length ratio of the rod ψ) on two critical yaws were studied for three typical rod–target systems (tungsten alloy rods penetrating steel targets, steel rods penetrating aluminum alloy targets, and steel rods penetrating steel targets). The relationship between two critical yaw angles was also discussed. A new empirical formula for the critical yaw θc2 was proposed based on the parametric study results and dominant nondimensional numbers, which extends the valid application range of the existing empirical formula.
publisherThe American Society of Mechanical Engineers (ASME)
titleCritical Impact Yaw for Long-Rod Penetrators
typeJournal Paper
journal volume83
journal issue12
journal titleJournal of Applied Mechanics
identifier doi10.1115/1.4034620
journal fristpage121008
journal lastpage121008-8
treeJournal of Applied Mechanics:;2016:;volume( 083 ):;issue: 012
contenttypeFulltext


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