forexample
its a ring shaped object on which i am doing arc welding, while moving in circular path, the temperature change shows 850, 875,890,861,790 etc
i want to ask what could be the reason for this ?
i am using ls dyna software
could it be the coarsening of the mesh problem or what??
suggest
Hi Rameez
I think it's normal
Depending on the boundary conditions, the first pass the temperature of the metal is the same temperature of the laboratory or the workplace, but in the second and third pass these conditions change due to the inherent heat in the metal. Especially this oscillation is not great
In simulation several factors may contribute to the variation of results such as mesh size, even if all the other conditions are exactly same.
Welding leads to change in temperature with time and it varies from point to point. So are you talking about the temperature exactly at the same point and at the same instant of time after the arc has passed over that point?
In multi pass welding the material deposited in the previous layer will also influence the temperature distribution. So has it been considered in your simulation?
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