Abstract
A genetic algorithm (GA) was adopted to optimise the response of a composite laminate subject to impact. Two different impact scenarios are presented: low-velocity impact of a slender laminated strip and high-velocity impact of a rectangular plate by a spherical impactor. In these cases, the GA's objective was to, respectively, minimise the peak deflection and minimise penetration by varying the ply angles. The GA was coupled to a commercial finite-element (FE) package LS DYNA to perform the impact analyses. A comparison with a commercial optimisation package, LS OPT, was also made. The results showed that the GA was a robust, capable optimisation tool that produced near optimal designs, and performed well with respect to LS OPT for the more complex high-velocity impact scenario tested.
| Original language | English |
|---|---|
| Pages (from-to) | 1293-1302 |
| Number of pages | 10 |
| Journal | Int J Impact Eng |
| Volume | 35 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2008 |
| Externally published | Yes |
Keywords
- Composites Finite elements Genetic algorithms Impact Optimisation Algorithms Bioelectric phenomena Carbon fiber reinforced plastics Diesel engines Plates (structural components) Composite laminates Deflection (ovalization) Finite element (FE) Genetic algorithm (GA) High-velocity impacts Impact loadings Impact scenarios Impactor Low velocity impact (LVI) LS-DYNA Optimal designs Ply angles Rectangular plates Spherical(pivot)