Transient response of pretwisted delaminated stiffened shell under low velocity impact. Issue 3 (4th May 2018)

• Record Type: Journal Article
• Authors: Rout, Mrutyunjay; Hota, Sasank Shekhar; Karmakar, Amit
• Is Part Of: International journal for computational methods in engineering science and mechanics. Volume 19:Issue 3(2018)
• Page Start: 139
• Page End: 155
• Publication Date: 2018-05-04
• Subjects: Finite element -- Stiffener -- Delamination -- Composite -- Pretwisted shell -- Impact; Engineering -- Data processing -- Periodicals; Engineering mathematics -- Periodicals; Computer-aided engineering -- Periodicals; 620.00420285
• DOI: 10.1080/15502287.2018.1430080
• Languages: English
• ISSNs: 1550-2287

Abstract

ABSTRACT: The paper presents the study of low velocity impact response of delaminated composite stiffened shell with pretwist employing finite element method for different combination of stiffeners. An eight noded isoparametric shell element along with a three noded isoparametric beam element are employed to model the shell and the stiffener, respectively. The modified Hertzian contact law is considered to compute the contact force, while the Newmark's time integration algorithm is used to solve the time dependent equations of both impactor and shell. The multipoint constraint algorithm is used to model delamination. Finally, the parametric studies are reported.