Modeling High Frequency Vibration in Composites Using an Energy Finite Element Method for Shock Analysis of Lightweight Army Vehicles
Abstract
Two different types of simulations are required for analyzing Army vehicles when they are subjected to explosive/impact loads: (a) Survivability analysis, when loads generate damage on the vehicle structure by causing permanent deformation; (b) Shock analysis, when the vehicle structure remains within the elastic region. Shock analysis ensures that vibration levels must remain low at locations where electronic equipment is mounted. Due to short duration of the load the high frequency response is important for shock analysis (i.e. 500Hz - 10,000Hz). Since the shock loads comprise one of the sets of design loads for any Army vehicle, it is important to perform a shock simulation efficiently enough in order to make design decisions. Such simulations will allow to access the survivability of the equipment and therefore of the vehicle, and they will allow to incorporate design changes in order to achieve desirable shock spectra at mounting locations. Computing efficiently the high frequency response of composite structures is the objective of this research.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 14, 2011
- Accession Number
- ADA544852
Entities
People
- Nickolas Vlahopoulos
Organizations
- University of Michigan