Swinging Wire Arc Additive Manufacturing of Six-Directions Steel Joints in Building Steel Structure and Evaluation of its Load-Bearing Performance
According to the characteristics of the six-directions steel joint structure,the strategy of zone forming,plane slicing,swing and offset filling was adopted.In order to avoid the mutual interference between the formed part of the six-directions steel node and the arc welding torch,the six-directions steel node was divided into the straight wall cylinder area,the two-pipe inter-secting area and the three-pipe intersecting area.The straight wall cylinder area was filled with swing,and the two-pipe inter-secting and the three-pipe intersecting areas were respectively filled with contour offset and mixed paths.Reasonable forming strat-egy and swing wire arc additive manufacturing process maked the formed six-directions steel node had good mechanical proper-ties and high forming accuracy.The overall size deviation of the swing arc wire additive manufacturing six-directions steel node was±1.30mm.Finite element analysis and bench test wire arc additive manufacturing six-directions steel node under actual working conditions,the maximum stress in the intersecting zone was 36.7MPa,which was much smaller than the yield strength of the deposited metal,and it was always in an elastic state,it had good load-bearing performance.
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NSTL
万方数据
维普
