Force and thickness prediction with FEA of the cranial implants manufactured through SPIF

Abstract

Single point incremental forming is a process which is primarily used for prototyping, small series production and unique parts. This procedure shows a high potential in the development of complex shape parts where the time of the execution does not play an important role. Among the applications of this process are the execution of various medical prostheses, such as: knee prostheses and cranial implants. The aim of this paper is to determine the forces which take place during the manufacture process of an cranial implant, as well as the thinning of the material through the help of finite element analysis. After the numerical simulation, from the results obtained it is possible to observe the behaviour of the material at different forces which appear during the deformation process. In addition, in this paper will be presented considerations about the thinning of the material used for the cranial implant.

Investigation of the Effect of SPIF Parameters on the Thickness of Al 2024 Alloy

“…For instance, Popp et al [10] studied force generation and wall thinning during the formation of the cranial implant using the single-point incremental forming process. Particularly, the sheet metal used was (S700) with a thickness of (4 mm).…”

A Brief Review of Robotic Machining

“…A new sheet metal forming process -the incremental sheet-forming, is mainly used in aeronautical, automotive or medical applications due to advantages of this process: the high flexibility and formability, the short lead time, the lower cost in small batches [7,8]. Even thorough the mainly advantage of using industrial robot in incremental sheet-forming is defined by the act that the strain and relative thickness of the sheet metal could be measure online [9,10].…”

Combining Response Surface Method and Metaheuristic Algorithms for Optimizing SPIF Process

“…ThismultiplicityoftheparametersaffectingtheSPIFprocessrenderitdifficulttodependon theexperimentalmethodtointroduceaninformativestudyfortheeffectofeachparameter,letalone performinganoptimizationanalysis (Hrairi&Echrif,2011).Therefore,attentionhasbeendirected towardsexploringthepotentialsofnumericalsimulations.Oneofthevaluableworksinthisfieldis thatintroducedbyPopp, Rusu,Racz,&Popp(2019).Theirworkhasfocusedonmanufacturingthe cranialimplantsusingSPIF,andthefiniteelementanalysis(FEA)hasbeenemployedtopredictthe thicknessandforcesexertedwhilemanufacturing.…”