Mechanic of Advanced and Smart Materials
Quarterly

Investigation of hydroforming process loading paths based on experimental and improvement based on Sobol sensitivity analysis

Document Type : Original Article

Authors

Seyed Hasan Bathaee 1
Mohammad Sabzevari 2
Hasan Moslemi Naeini 2

1 Department of Manufacturing Engineering, Faculty of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran

2 Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran

https://doi.org/10.52547/masm.2.1.53
Abstract
In this paper, using the Sobol sensitivity analysis method, which is based on variance, 11 factors affecting the optimization of the loading path of the hydroforming process are investigated, then the feasibility and validation of the results with other optimization methods such as finite element and experimental method are reported. Is Input factors include, expansion pressure, final pressure, yield time, end of expansion time, intermediate mandrel displacement, final mandrel displacement, intermediate mandrel displacement time, initial position of reciprocating mandrel, final position of reciprocating mandrel, start time of reciprocating mandrel and time The stops of the reciprocating mandrels are considered, then the effect of each of them on the minimum thickness and maximum height in the loading path of the hydroforming process to produce T-joints is investigated and reported in detail. Quantitatively and qualitatively, the optimal values are obtained for each of the 11 input factors and are calculated based on the loading paths.

Keywords

Hydroforming process
sensitivity analysis
Sobol method
regression
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Mechanic of Advanced and Smart Materials
Volume 2, Issue 1
Spring 2022
Pages 53-72

  • Receive Date 12 February 2022
  • Revise Date 09 April 2022
  • Accept Date 17 May 2022

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