|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 79 van 110 gevonden artikelen
| Titel: |
Optimal design of composite fuselage frames for crashworthiness |
| Auteur: |
Woodson, Marshall B. Johnson, Eric R. Haftka, Raphael T. |
| Verschenen in: |
International journal of crashworthiness |
| Paginering: | Jaargang 1 (1996) nr. 4 pagina's 369-380 |
| Jaar: |
1996 |
| Inhoud: |
The optimal design of a curved, composite fuselage frame under a static crush load is presented. The objective is to maximize the absorbed energy subject to a constraint on the maximum load, and thus improve the crashworthy response of the frame. The finite element analysis is based on a Vlasov-type curved bar theory extended to include laminated composite wall construction, and a selective and progressive ply-by-ply material degradation model for graphite-epoxy laminates. Results from the progressive failure analysis are in reasonable agreement with experimental data, A genetic algorithm is used to design the stacking sequence and cross-sectional dimensions, since the design variables are limited to discrete values and the objective function and constraint function are nonlinear, non-smooth functions of the design variables. Examples are presented which show a significant theoretical increase in energy absorption for thin-walled, I-section, graphite-epoxy frames. The combined analyses for progressive failure response and design are considered appropriate for preliminary design. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 79 van 110 gevonden artikelen
| << vorige | volgende >> |