PERHITUNGAN DISTRIBUSI TEGANGAN SISA PENGELASAN SAMBUNGAN–T PADA INSTALASI PIPA

  • Antonius Wahyu Cahyo Purnomo Akademi Tehnik Mesin Industri
Keywords: finit elemen, welding pipe, Tee joint, residual stress

Abstract

Abstract
Study on modeling and calculation of the residual stress on welding process was performed in the Tee
junction of the piping system. The welding material standard with the specification of heat conductivity of k =
13,5x106 W/ °K.m2 and thermal expansion of α = 13x10-6mm/mm was used as a calculation model. The
residual stress was calculated by iteration of the strain which was obtained from the temperature distribution
during the cooling process on the welding to the room temperature with temperature simulation of 1200 °C at the
welded area. The calculation was done by the finite element method using the 3 dimension modeling of ANSYS
5.4. program. The stress distribution showed the residual stress on the welded area was 300 to 400 MPa, while at
the material of piping was 30 to 170 MPa. The stress concentration could be observed at the welded junction
which was occurred in the inner and surface junction, with the maximum stress of 440 MPa. Based on the
calculation result, it can be concluded that the computation method can predict the average and the maximum of
residual stress from the stress concentration.

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References

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Published
2016-07-04
How to Cite
Purnomo, A. (2016). PERHITUNGAN DISTRIBUSI TEGANGAN SISA PENGELASAN SAMBUNGAN–T PADA INSTALASI PIPA. Journalmachine, 2(2), 11-16. Retrieved from https://journalmachine.ubb.ac.id/index.php/jurnalmesin/article/view/26