Learning Forum

[Fangzhou Ling]

I want verify how the element birth and death can help simulation inject molding stress. For simplicity, I have created a 2 films stack with different CTE. Film A is silicon which has a smaller CTE and exists at the beginning. Film B is the molding compound which has a larger CTE and should be added at a higher tempearture eg. 100C. 

I have run the simulation in 2 ways:

1.Film A reference temperature is 25C, kill the Film B element and increase the temperature to 100C. Eactive the Film B elements. And cool down to 25C. Check the deformation. 

2. Film A and film B are both enabled in the beginning and increase temperature from 25C to 100C and cooled down to 25C again. Check the deformation.

I was expected quite different deformation from two simulation. However, I got totally identical deformation? It seems that the element birth and death does not work at all. 

Can someone help explain?

[Ashish Khemka]

Hello,

Please see if the following links help:

VM194 Input Listing (ansys.com)

Performing EKILL Element Death in Workbench | Ansys Mechanical (simutechgroup.com)

Regards,

Ashish Khemka