The effects of forming history on sheet metal assembly
2014 (English)In: International Journal of Material Forming, ISSN 1960-6206, Vol. 7, no 3, 305-316 p.Article in journal (Refereed) Published
As demand for faster product development increases, physical prototypes are replaced by virtual prototypes. By using finite element simulations to evaluate the functional behaviour of the product as well as its manufacturing process, more design alternatives can be evaluated while a considerably smaller number of physical prototypes are needed. As sheet metal assemblies are common in a wide range of products, reliable methods for predicting their properties are necessary. By sequentially simulating the complete manufacturing process chain of an assembly, early predictions concerning the geometry and material properties of the assembly can be made.
In this study a simulation-based sensitivity study is performed in order to investigate the influence of the forming history on the predictions of assembly properties. In the study, several simulations of the assembly stage are performed in which different types of forming histories are retained from the forming stage. The simulations of the assembly stage will range from a case with linear elastic conditions without forming history, to a case with the full forming history state and consistent material modelling throughout all simulations. It is found that the residual stress state is the most influential history variable from the forming stage. Especially for more complex geometries in which large residual stresses can be retained.
Place, publisher, year, edition, pages
Springer, 2014. Vol. 7, no 3, 305-316 p.
Finite element simulation, Assembly, Sheet metal, Forming, History variables, Chaining of manufacturing processes
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-78765DOI: 10.1007/s12289-013-1128-9ISI: 000338323600004OAI: oai:DiVA.org:liu-78765DiVA: diva2:535642
On the day of the defence date of the Ph.D. thesis the status of this article was Manuscript.2012-06-202012-06-202014-08-12Bibliographically approved