Numerical simulation of multipoint forming with circular die pins in hexagonal packing

Rivai Wardhani, Suwarta Putu, Budi Luwar Sanjoto, Husodo Nur, Subiyanto Hari

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)


Multipoint forming (MPF) in flexible forming technology. from the previous research of multipoint forming, the configuration of the upper and lower punch matrices were configured in square packing. In this paper, model of multipoint forming configuration was developed and the numerical simulation was performed to investigate the influence of the proposed pins arrangement, hexagonal packing. The packing density in hexagonal arrangement is higher than in square one. The deformation process in multipoint forming with hexagonal packing is evaluated in terms of stress and strains distribution. The results demonstrated that forming tool with hexagonal packing is more efficient than pins arranged in square packing. But dimples and wrinkles as the typical defect of multipoint forming was inevitable consequences of discontinuous contact between the punches and workpiece, appeared. The dimpling phenomenon is more present in MPF with hexagonal packing than with square packing.

Original languageEnglish
Title of host publicationAdvances in Applied Mechanics and Materials
PublisherTrans Tech Publications Ltd
Number of pages5
ISBN (Print)9783037859902
Publication statusPublished - 2014
EventInternational Conference on Mechanical Engineering, ICOME 2013 - Mataram, Lombok, Indonesia
Duration: 19 Sept 201321 Sept 2013

Publication series

NameApplied Mechanics and Materials
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482


ConferenceInternational Conference on Mechanical Engineering, ICOME 2013
CityMataram, Lombok


  • Hexagonal packing
  • Multipoint forming
  • Numerical simulation
  • Packing density


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