Convergence problem with static general analysis

Hi

 I am trying to simulate the effect of gravity on an object (breast).

Initially I used static, general analysis and I got the qualitatively sensible results.

Now, I have added skin to surface part of the surface of the object and I am getting this error:

"Error in job Job-1: Time increment required is less than the minimum specified"

Increment size were (Initial:0.01, minimum: 1E-09, Maximum:1)

Few papers in the literature of breast modelling suggest using dynamic-explicit for these simulation as this analysis can be considered quasi-static. I have tried this and solution converges.

 

Now, my query how do I get my static (general) analysis to converge? Is it correct/acceptable to use dynamic-explicit for the stress analysis?

 

Thanks

Prabhjot