Abstract
A series of past works on structural optimizations of train car bodies were done by the authors to improve crashworthiness. There a concept of crushable body similar to that of automobiles was introduced and a simple model with lumped masses and nonlinear springs was adopted to know the macroscopic dynamic behaviors in car collisions. Then the parameters of nonlinear springs in crushable zones to specify the load-deformation curve were determined optimally to improve crashworthiness. It was also found it difficult to realize such optimum properties by making use of ordinary structural members only and additional use of energy absorbing structural members might be inevitable. Thus specified members with various holes are considered in this study to absorb collision energy. The positions and geometric dimensions of the holes are optimally determined to meet the optimum properties of nonlinear springs. The results confirm the effectiveness and applicability of those types of specified members to real train car bodies,
| Original language | English |
|---|---|
| Title of host publication | Collection of Technical Papers - 10th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference |
| Pages | 650-655 |
| Number of pages | 6 |
| Volume | 1 |
| Publication status | Published - 2004 |
| Event | Collection of Technical Papers - 10th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference - Albany, NY Duration: 2004 Aug 30 → 2004 Sep 1 |
Other
| Other | Collection of Technical Papers - 10th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference |
|---|---|
| City | Albany, NY |
| Period | 04/8/30 → 04/9/1 |
Keywords
- Crushable zone
- Energy absorbing member
- Optimum design
- Response Surface Method (RSM)
- Safety zone
- Sequential Quadratic Programming (SQP)
- Train crashworthiness
ASJC Scopus subject areas
- Engineering(all)