Abstract
This study evaluates the consequences of modelling a weld-generated Heat Affected Zone when optimizing lightweight steel structures for crashworthiness. A case study on the resistance of an X-core sandwich panel is presented using a Particle Swarm Optimization-algorithm to search the design space for optimal solutions. Structures are developed by procedures including-and excluding a HAZ effect and later compared. The developed structures show distinct differences in terms of geometry, energy absorbed per unit mass, failure mode and sensitivity to HAZ material properties. Highlighting the importance of a proper set up for structural optimization, these findings question the validity of omitting weld effects when optimizing for crashworthiness.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 29th International Ocean and Polar Engineering Conference, ISOPE 2019 |
| Editors | Jin S. Chung, Odd M. Akselsen, HyunWoo Jin, Hiroyasu Kawai, Yongwon Lee, Dmitri Matskevitch, Suak Ho Van, Decheng Wan, Alan M. Wang, Satoru Yamaguchi |
| Publisher | International Society of Offshore and Polar Engineers |
| Pages | 4280-4287 |
| Number of pages | 8 |
| ISBN (Print) | 9781880653852 |
| Publication status | Published - 2019 |
| MoE publication type | A4 Article in a conference publication |
| Event | International Ocean and Polar Engineering Conference - Honolulu, United States Duration: 16 Jun 2019 → 21 Jun 2019 Conference number: 29 |
Publication series
| Name | Proceedings of the International Offshore and Polar Engineering Conference |
|---|---|
| Volume | 4 |
| ISSN (Print) | 1098-6189 |
| ISSN (Electronic) | 1555-1792 |
Conference
| Conference | International Ocean and Polar Engineering Conference |
|---|---|
| Abbreviated title | ISOPE |
| Country/Territory | United States |
| City | Honolulu |
| Period | 16/06/2019 → 21/06/2019 |
Keywords
- Crashworthiness
- Laser welds
- Particle Swarm Optimization
- Sandwich panels
- Steel structures
- Thin-walled structures