WIT Press


A Unique Computational Algorithm To Simulate Probabilistic Multi-factor Interaction Model Complex Material Point Behavior

Price

Free (open access)

Paper DOI

10.2495/MC090061

Volume

64

Pages

13

Page Range

55 - 67

Published

2009

Size

1,296 kb

Author(s)

C. C. Chamis & G. H. Abumeri

Abstract

The Multi-Factor Interaction Model (MFIM) is used to evaluate the divot weight (foam weight ejected) from the launch external tanks. The multi-factor has sufficient degrees of freedom to evaluate a large number of factors that may contribute to the divot ejection. It also accommodates all interactions by its product form. Each factor has an exponent that satisfies only two points—the initial and final points. The exponent describes a monotonic path from the initial condition to the final. The exponent values are selected so that the described path makes sense in the absence of experimental data. In the present investigation, the data used was obtained by testing simulated specimens in launching conditions. Results show that the MFIM is an effective method of describing the divot weight ejected under the conditions investigated. Keywords: weight, comparisons, cumulative distribution, probabilistic sensitivities, local optimization.

Keywords

weight, comparisons, cumulative distribution, probabilistic sensitivities, local optimization