TY - JOUR
T1 - Optimum design and vibration analysis of a naval piercing bomb for impact assessment on a fuze structure
AU - Rhim, Soeun
AU - Kim, Cheol
AU - Kim, Ju Yeong
AU - Yoon, Jong Won
N1 - Publisher Copyright:
© 2020 The Korean Society of Mechanical Engineers
PY - 2020
Y1 - 2020
N2 - To better understand the stresses, deformations, and high vibratory accelerations that occur within piercing bomb structures upon collision with steel ship structures, detailed finite element structural analyses were performed using realistic extreme design impact loads. The piercing bomb under consideration consisted of seven different materials, i. e., AISI4340, AISI4340F, gypsum, Al7075-T6, AISI1030, pelt, and MC-nylon. In particular, the influences of large strain and the impact acceleration along the bomb length on the fuse-protecting structure were investigated to reduce the likelihood of fuse malfunction as a result of transferred impact loads and/or acceleration. By optimizing the shape for compatibility with large impact loads, an improved structural piercing shell design was developed; the design has the same volume, but enhanced strain energy absorption. Accordingly, the strain and acceleration near the fuse-protecting structure were investigated by performing finite element analyses; they were determined to be negligibly small upon piercing impact.
AB - To better understand the stresses, deformations, and high vibratory accelerations that occur within piercing bomb structures upon collision with steel ship structures, detailed finite element structural analyses were performed using realistic extreme design impact loads. The piercing bomb under consideration consisted of seven different materials, i. e., AISI4340, AISI4340F, gypsum, Al7075-T6, AISI1030, pelt, and MC-nylon. In particular, the influences of large strain and the impact acceleration along the bomb length on the fuse-protecting structure were investigated to reduce the likelihood of fuse malfunction as a result of transferred impact loads and/or acceleration. By optimizing the shape for compatibility with large impact loads, an improved structural piercing shell design was developed; the design has the same volume, but enhanced strain energy absorption. Accordingly, the strain and acceleration near the fuse-protecting structure were investigated by performing finite element analyses; they were determined to be negligibly small upon piercing impact.
KW - Acceleration
KW - FE Analysis
KW - Impact
KW - Optimum Design
KW - Piercing Shell
UR - http://www.scopus.com/inward/record.url?scp=85084468460&partnerID=8YFLogxK
U2 - 10.3795/KSME-A.2020.44.1.021
DO - 10.3795/KSME-A.2020.44.1.021
M3 - Article
AN - SCOPUS:85084468460
SN - 1226-4873
VL - 44
SP - 21
EP - 26
JO - Transactions of the Korean Society of Mechanical Engineers, A
JF - Transactions of the Korean Society of Mechanical Engineers, A
IS - 1
ER -