Analysis of steel-with-composite material substitution in military vehicle hull floors subjected to shallow-buried landmine-detonation loads. Issue 3 (7th October 2014)

• Record Type: Journal Article
• Authors: Grujicic, M.; Snipes, J.S.; Ramaswami, S.; Yavari, R.; Yen, C.-F.; Cheeseman, B.A.
• Is Part Of: Multidiscipline modeling in materials and structures. Volume 10:Issue 3(2014)
• Page Start: 416
• Page End: 448
• Publication Date: 2014-10-07
• Subjects: Blast and soil ejecta loading -- Detonation of shallow buried mines -- Discrete-particle approach; Materials -- Mathematical models -- Periodicals; Engineering -- Mathematical models -- Periodicals; 620.11015118
• DOI: 10.1108/MMMS-01-2014-0001
• Languages: English
• ISSNs: 1573-6105

Abstract

Abstract : Purpose: – The purpose of this paper is to address the problem of substitution of steel with fiber-reinforced polymer-matrix composite in military-vehicle hull-floors, and identifies and quantifies the associated main benefits and shortcomings. Design/methodology/approach: – The problem is investigated using a combined finite-element/discrete-particle computational analysis. Within this analysis, soil (in which a landmine is buried), gaseous detonation products and air are modeled as assemblies of discrete, interacting particles while the hull-floor is treated as a Lagrangian-type continuum structure. Considerable effort has been invested in deriving the discrete-material properties from the available experimental data. Special attention has been given to the derivation of the contact properties since these, in the cases involving discrete particles, contain a majority of the information pertaining to the constitutive response of the associated materials. The potential ramifications associated with the aforementioned material substitution are investigated under a large number of mine-detonation scenarios involving physically realistic ranges of the landmine mass, its depth of burial in the soil, and the soil-surface/floor-plate distances. Findings: – The results obtained clearly revealed both the benefits and the shortcomings associated with the examined material substitution, suggesting that they should be properly weighted in each specific case of hull-floor design. Originality/value: – To the authors' knowledge, the present work is the first public-domain report of the findings concerning the complexity of steel substitution with composite-material in military-vehicle hull-floors.