Studi Perilaku Kegagalan Sambungan Las Tipe T-Conjunctions Pada Baja Karbon Rendah Dengan Pendekatan Experimen dan Numerik
Abstract: This research is
conducted to investigate failure behavior of welding structure in
T-conjunctions type. Welding joint failures were analyzed by both experimental
and finite element analysis (2D) approach in terms of stress intensity factor
mode I (KI). The stress at the welding zone was strongly influenced by specimen
geometries and the ratio of L/h1. The stress intensity factor (SIF) was
increased significantly. Whereas, the minimum SIF of specimen #X1and #Y3 are 58
MPa.√m and 165 MPa.√m, respectively. Failure of welding specimen was more
dominated in the zone with the highest stress concentration and also affected
by material discontinuity at which the stress was not generated continuously,
but localized in any certain area. Specimen without welding did not yield a
maximum stress. However, plastic zone formation locally decreases the stress
concentration. Discontinuity in the welding specimen does not give rise to
plastic stream, thus it will raise the stress concentration at the welding
extension region. Discontinuity can be observed by the Von Misses stress
pattern at stress welding zone for the welding specimen whereas the specimen
without welding was only occurred near the extension zone.
Penulis: Mohammad Badaruddin
Kode Jurnal: jptmesindd110317
