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The effects of forming history on sheet metal assembly

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Abstract

In this study a simulation-based sensitivity study is performed in order to investigate the influence of the forming history on the properties of an assembly. In the study the assembly properties are predicted by sequentially simulating the manufacturing process chain of a sheet metal assembly. Several simulations of the assembly stage are performed in which different combinations of forming histories are transferred from the forming stage. It is found that the forming history affects the properties of the assembly and that the residual stress state is the most influential history variable. This demonstrates the importance of utilising the complete final mechanical state of each manufacturing step as the initial condition for the subsequent step in the manufacturing process chain in order to achieve accurate predictions of the assembly properties. Furthermore, if more reliable predictions can be made concerning the manufacturability of a product and its in-service behaviour, more design alternatives can be evaluated during product development while a considerably smaller number of physical prototypes are needed.

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Acknowledgments

The material characterisation and stamping of components were conducted by Per Thilderkvist and Jörgen Hertzman at the Industrial Development Center, Olofström, Sweden. The physical assembly and CMM measurements were carried out at Volvo Car Body Components, Olofström, Sweden and the support from Dr. Alf Andersson is gratefully acknowledged. The work presented in this paper has been carried out with financial support from the Swedish Foundation for Strategic Research, the ProViking programme.

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Authors and Affiliations

  1. Division of Solid Mechanics, Linköping University, 58183, Linköping, Sweden

    Alexander Govik, Ramin Moshfegh & Larsgunnar Nilsson

  2. Outokumpu Stainless AB, Avesta, Sweden

    Ramin Moshfegh

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  1. Alexander Govik
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  2. Ramin Moshfegh
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  3. Larsgunnar Nilsson
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Correspondence to Alexander Govik.

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Govik, A., Moshfegh, R. & Nilsson, L. The effects of forming history on sheet metal assembly. Int J Mater Form 7, 305–316 (2014). https://doi.org/10.1007/s12289-013-1128-9

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  • DOI: https://doi.org/10.1007/s12289-013-1128-9

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