ThomasMabau
Mechanical
- Apr 4, 2018
- 1
Hi,
due to my Masterthesis i have to analyse two welded bodys (in Attachment). There will be a thermal and a mechanical analyse of the model.
The two blocks (same material) should be welded together. Heat, strains etc. should be transfered as it would only be one piece.
At a later step i will seperate the two parts (remove the welding) and analyse the behaviour/strains of each part. The lower body is encastré.
Firstly i created a Tied-Contact Pair between the parts. The problem is, you cant remove Tied-Contacts in a step. (see this Thread)
Therefore i created an Surface-to-Surface Interaction between the two surfaces. Here i should be able to remove it in a step.
My question is how can i define the Contact Property in this case?
At this point i got these settings:
(mechanical)
- For Tangential Behaviour i chose Friction formulation: Rough -> no sliding in tangential direction
- For Normal Behavior i chose Hard Contact as Pressure-Overclosure and Penalty (Standard) as Constrain enforcement method
(thermal)
- For Thermal Conductance i got a value of 1e6. I want to reach a complete heat transfer. There shouldn`t be Radiation in my model.
If i compare my results of the Tied-Contact with the results of surface-to-surface Interaction, they are different.
How can i improve the settings? Have i forgotten anything?
regards,
Thomas
due to my Masterthesis i have to analyse two welded bodys (in Attachment). There will be a thermal and a mechanical analyse of the model.
The two blocks (same material) should be welded together. Heat, strains etc. should be transfered as it would only be one piece.
At a later step i will seperate the two parts (remove the welding) and analyse the behaviour/strains of each part. The lower body is encastré.
Firstly i created a Tied-Contact Pair between the parts. The problem is, you cant remove Tied-Contacts in a step. (see this Thread)
Therefore i created an Surface-to-Surface Interaction between the two surfaces. Here i should be able to remove it in a step.
My question is how can i define the Contact Property in this case?
At this point i got these settings:
(mechanical)
- For Tangential Behaviour i chose Friction formulation: Rough -> no sliding in tangential direction
- For Normal Behavior i chose Hard Contact as Pressure-Overclosure and Penalty (Standard) as Constrain enforcement method
(thermal)
- For Thermal Conductance i got a value of 1e6. I want to reach a complete heat transfer. There shouldn`t be Radiation in my model.
If i compare my results of the Tied-Contact with the results of surface-to-surface Interaction, they are different.
How can i improve the settings? Have i forgotten anything?
regards,
Thomas