4.5 Article

Oblique crushing of truncated conical sandwich shell with corrugated core

期刊

MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
卷 28, 期 23, 页码 2458-2471

出版社

TAYLOR & FRANCIS INC
DOI: 10.1080/15376494.2020.1743396

关键词

Corrugated core; energy absorption; multi-objective optimization; oblique crushing; truncated conical sandwich shells

资金

  1. National Natural Science Foundation of China [11802221, 11972185, 51875441]
  2. National Key R&D Program of China [2018YFB1106400]
  3. China Postdoctoral Science Foundation [2016M600782]
  4. Postdoctoral Scientific Research Project of Shaanxi Province [2016BSHYDZZ18]
  5. Zhejiang Provincial Natural Science Foundation of China [LGG18A020001]
  6. Natural Science Basic Research Plan in Shaanxi Province of China [2018JQ1078]
  7. Open Fund of the State Key Laboratory of Mechanics and Control of Mechanical Structures, China [MCMS-I-0219K01, MCMS-E-0219K02]

向作者/读者索取更多资源

Through experimental and numerical analysis, it was found that metallic truncated conical sandwich shells with corrugated cores exhibit higher energy absorption and lower peak force under oblique compression, especially when the semi-apical angle is set around 10 degrees to 15 degrees. These results provide valuable guidance for the application of truncated conical sandwich tubes in protective engineering.
All-metallic truncated conical sandwich shells with corrugated cores (TCSS) were investigated for crashworthiness under quasi-static oblique compression using a combined experimental and numerical approach. Subsequently, multi-objective optimization design of the TCSS was also performed by adopting the algorithm of NSGA-II to achieve maximum specific energy absorption (SEA) and minimum peak force (F-P). Compared with a monolithic shell, the TCSS exhibits much higher SEA and lower F-P under oblique loading, especially with its semi-apical angle set around 10 degrees to 15 degrees. The results provide valuable guidance for the application of truncated conical sandwich tubes in protective engineering, such as vehicle crashworthiness.

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