Abstract
A simplified model is presented for cushion legs. Shell elements and beam elements are separately used to simulate the cylinders, taking the flexibility and the friction force of landing legs into consideration. Connector elements are used to present the dynamic performance of crushable material, improving the computational efficiency. Implicit dynamics procedure is introduced to ensure the calculation accuracy. The results show that shell element model can reflect the effect of legs' flexibility on landing performance better, meanwhile, as friction coefficient increasing, the energy absorption capabilities of legs are decreased.
| Original language | English |
|---|---|
| Pages (from-to) | 469-474 |
| Number of pages | 6 |
| Journal | Nanjing Hangkong Hangtian Daxue Xuebao/Journal of Nanjing University of Aeronautics and Astronautics |
| Volume | 46 |
| Issue number | 3 |
| Publication status | Published - Jun 2014 |
Keywords
- Aircraft design
- Dynamics modeling
- Landing legs
- Landing simulation
- Nonlinear finite element