Non-linear finite element investigation of formability limit by buckling in creep age forming of stiffened panels

Wenbin Zhou (Lead / Corresponding author), Qi Rong, Zhusheng Shi, Yuansong Zeng

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)
27 Downloads (Pure)


This paper focuses on the prediction of the formability limit of the stiffened panels during the loading stage and heating stage of the creep age forming (CAF) process. A set of non-linear finite element (FE) simulations has been carried out to investigate the elastic-plastic buckling behaviour of stiffened panels subjected to pure bending at the room temperature and the ageing temperature (155°C) for AA2050. From the nonlinear FE simulations, the effects of main geometric parameters (stiffener thickness and stiffener height) on the critical buckling stress and the critical radius of the stiffened panel have been investigated at both temperatures. Increasing the stiffener thickness or decreasing the stiffener height leads to an increase of the critical buckling stress and an increase of formability limit. The critical buckling stress at the ageing temperature is smaller than that at the room temperature when the stiffened panel enters the plastic region, however, the formability increases slightly at the ageing temperature.

Original languageEnglish
Pages (from-to)625-629
Number of pages5
JournalProcedia Manufacturing
Publication statusPublished - 4 Sept 2020
Event18th Metal Forming International Conference, Metal Forming 2020 - Krakow, Poland
Duration: 13 Sept 202016 Sept 2020


  • Buckling
  • Creep age forming
  • Formability
  • Non-linear finite element method
  • Stiffened panel

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Artificial Intelligence


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