Abstract
A mesoscale spring-mass model is used to mimic fabric surface motion. Through coupling with an incompressible fluid solver, the spring-mass model is applied to the simulation of the dynamic phenomenon of parachute inflation. A presentation of a verification and validation efforts is included. The present model is shown to be numerically convergent under the constraints that the summation of point masses is constant and that both the tensile stiffness and the angular stiffness of the spring conform with the material[U+05F3]s Young modulus and Poisson ratio. Complex validation simulations conclude the effort via drag force comparisons with experiments.
| Original language | English |
|---|---|
| Pages (from-to) | 20-39 |
| Number of pages | 20 |
| Journal | Journal of Fluids and Structures |
| Volume | 58 |
| DOIs | |
| State | Published - Oct 2015 |
| Externally published | Yes |
Funding
We would like to thank Dr. Joseph Myers of the ARO for fostering the collaborative relationship between authors at Stony Brook University and the Army scientists, and Dr. Michael Kendra for the support with Air Force Summer Faculty Fellowship to Edwards AFB. We would like to give special thanks to Jean Potvin at St. Louis University for providing the experimental data on the drag of the C-9 parachute, Alec Dyatt for giving us valuable suggestions on the direction of the research, and Keerti Bhamidipati for many fruitful discussions while Xiaolin Li was working at the Edwards AFB. Also thanks to Yiyang Yang for helping to make some of the figures. This work is supported in part by the US Army Research Office under the award W911NF0910306 , W911NF1410428 and the ARO-DURIP Grant W911NF1210357 .
Keywords
- Elastic membrane
- Parachute inflation
- Spring model