Accession Number : AD1042331


Title :   Validating a Finite Element Model of a Structure Subjected to Mine Blast with Experimental Modal Analysis


Descriptive Note : Technical Report,01 Oct 2012,30 Sep 2013


Corporate Author : US Army Research Laboratory Aberdeen Proving Ground United States


Personal Author(s) : Howle,Douglas ; Krayterman,Dmitriy ; Pritchett,Justin E ; Sorenson,Ryan


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1042331.pdf


Report Date : 01 Nov 2017


Pagination or Media Count : 42


Abstract : The Under-body Blast Methodology (UBM) for the Test and Evaluation (T and E) program was established to provide a capability for the US Army Test and Evaluation Command to assess the vulnerability of vehicles to under-body blast. Finite element (FE) models are part of the current UBM for T and E methodology and must be validated. The UBM for the T and E program has completed efforts to validate soil models but not structural dynamics models. Modal testing of a V-hull structure was performed. The modal test setup, execution, and results obtained are presented. Changes made to the existing FE model of the structure as part of the validation process are presented. The effect of the model validation on the shock response of the structure during a mine blast simulation was quantified using a correlation and analysis (CORA) tool. In general, all models whether validated or nonvalidated provided acceptable predictions of structural response.


Descriptors :   modal analysis , test and evaluation , structural response , experimental data , finite element analysis , computational modeling , land mines , blast loads , explosion effects , military vehicles


Subject Categories : Explosions
      Ammunition and Explosives
      Combat Vehicles
      Test Facilities, Equipment and Methods


Distribution Statement : APPROVED FOR PUBLIC RELEASE