mechdrive1
Mechanical
- May 26, 2016
- 71
Hello Everyone !
I'm doing analysis of a welding process using Coupled Eulerian-Lagrangian approach in ABAQUS/explicit. I have created a model (two layers of workpiece, one eulerian part, and a rigid tool). The tool penetrates the two layers of workpiece (one above the other) and is under pressure till the end. The feed rate given is 50 mm/sec and angular velocity 400 radians/sec. High feed rate is used to complete the analysis quickly. A predefined temperature of 293 K is specified for the entire model and a total step time of 0.08 sec. General contact (all with self) is specified in the interaction with coefficient of friction=0.4. The eulerian part was specified workpiece material by creating discrete fields using volume fraction tool and then using material assignment tool in the predefined module of loads section. The eulerian part is specified with a zero displacement/rotation boundary condition in all directions. In the analysis results till 0.03 seconds, the tool is penetrating the wokrpiece but the temperature profile isn't physically meaningful. the maximum temperature at 0.03 sec is just 313 K, which isn't correct.
Can someone point or suggest where I may have gone wrong in the creation of model ? Also, I've noticed that at the boundary regions between void and discrete field, the temperature is dropping below 293 K and at some places it's even going to zero. I'm attaching some images of my model and analysis results.
Thanks.
I'm doing analysis of a welding process using Coupled Eulerian-Lagrangian approach in ABAQUS/explicit. I have created a model (two layers of workpiece, one eulerian part, and a rigid tool). The tool penetrates the two layers of workpiece (one above the other) and is under pressure till the end. The feed rate given is 50 mm/sec and angular velocity 400 radians/sec. High feed rate is used to complete the analysis quickly. A predefined temperature of 293 K is specified for the entire model and a total step time of 0.08 sec. General contact (all with self) is specified in the interaction with coefficient of friction=0.4. The eulerian part was specified workpiece material by creating discrete fields using volume fraction tool and then using material assignment tool in the predefined module of loads section. The eulerian part is specified with a zero displacement/rotation boundary condition in all directions. In the analysis results till 0.03 seconds, the tool is penetrating the wokrpiece but the temperature profile isn't physically meaningful. the maximum temperature at 0.03 sec is just 313 K, which isn't correct.
Can someone point or suggest where I may have gone wrong in the creation of model ? Also, I've noticed that at the boundary regions between void and discrete field, the temperature is dropping below 293 K and at some places it's even going to zero. I'm attaching some images of my model and analysis results.
Thanks.