Modeling of Shock Propagation and Attenuation in Viscoelastic Components
Abstract
Protection from the potentially damaging effects of shock loading is a common design requirement for diverse mechanical structures ranging from shock accelerometers to spacecraft. High damping viscoelastic materials are employed in the design of geometrically complex, impact-absorbent components. Since shock transients are characterized by a broad frequency spectrum, it is imperative to properly model frequency dependence of material behavior over a wide frequency range. The Anelastic Displacement Fields (ADF) method is employed herein to model frequency-dependence within a time-domain finite element framework. Axisymmetric, ADF finite elements are developed and then used to model shock propagation and absorption through viscoelastic structures. The model predictions are verified against longitudinal wave propagation experimental data and theory.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 01, 2001
- Source ID
- 10.1155/2001/969160
Entities
People
- D.j. Inman
- G.a. Lesieutre
- R. Rusovici
Organizations
- Army Research Office
- Pennsylvania State University
- Virginia Tech