6533b871fe1ef96bd12d2554

RESEARCH PRODUCT

Multi-directional vs. mono-directional multi-step strategies for single point incremental forming of non-axisymmetric components

Livan FratiniFabrizio MicariGianluca BuffaMarco Gucciardi

subject

FEM0209 industrial biotechnologyMaterials scienceAluminium alloySingle stageStrategy and ManagementGrid analysisNumerical analysisIncremental formingRotational symmetryGeometry02 engineering and technologyManagement Science and Operations Research021001 nanoscience & nanotechnologyMulti-step toolpathIndustrial and Manufacturing EngineeringFinite element methodMulti stage020901 industrial engineering & automationMulti directionalSingle point0210 nano-technology

description

Abstract Multi Stage approach is used in Single Point Incremental Forming (SPIF) to overcome one of the main forming limitations, namely the maximum wall angle, characterizing the single stage process. In this paper, different multi-path strategies for the production of parts with flat edges are considered in order to evaluate the best solution in terms of feasibility and geometrical accuracy of the final part: A) mono-directional incremental draw angle; B) mono-directional incremental draw angle with increasing part side; C) Multi-directional approach with non-horizontal path planes. Strain evaluation by means of CGA (Circular Grid Analysis) and defect analysis have been carried out in order to identify the main limitations of each approach. A defect-free part has been obtained with Strategy C. The developed numerical analysis, showing good agreement with experimental thickness distribution, highlighted the peculiar material redistribution from the thicker zones to the thinner ones occurring using Strategy C.

yearjournalcountryeditionlanguage
2020-07-01Journal of Manufacturing Processes
https://doi.org/10.1016/j.jmapro.2020.03.055