RT Journal Article SR Electronic A1 Konar, Radoslav A1 Mician, Milos A1 Patek, Marek A1 Kadas, Dalibor T1 Finite Element Modeling and Numerical Simulation of Welding at the Repair of Gas Pipelines with Steel Sleeve JF Manufacturing Technology Journal YR 2016 VO 16 IS 2 SP 360 OP 365 DO 10.21062/ujep/x.2016/a/1213-2489/MT/16/2/360 UL https://journalmt.com/artkey/mft-201602-0009.php AB This article deals with simulations of the welding process for applications of practice using SYSWELD software. Simulation of welding at the repair of high-pressure gas pipeline with steel sleeve with composite filling is presented in this paper. Two welds connecting the distance ring and gas pipe were simulated. Structure of programme SYSWELD and repair of high pressure gas pipeline with steel sleeve is described in theoretical part of article. Preparation of boundary conditions for numerical simulation on real sample and numerical simulation of welding is in experimental part. Thermal fields, residual stresses and hardness were simulated. The results of the numerical model, which are listed in article except for residual stresses are compared to real experiments. This article mainly describes the numerical simulation capabilities in welding simulation programme SYSWELD.