How to solve error “Too large coordination number”?

- February 8, 2024 at 1:01 am
  
  Mohammad Ashikur Rahman
  Subscriber
  
  Greetings. I am pursuing a Masters in Geotechnics. For my research, I am trying to model a rock mass for blast operation. When I run the model it starts smoothly. Initially, the estimated time required to complete the analysis appears to be 8 hours. Then it starts to increase. After one hour it reaches to 1day and 21 hours. And suddenly it terminates the analysis and shows the following error:
  Error 41236 (SOL+1236)
  Too large coordination number
  
  I humbly expect your guidance to solve this issue. Your kind cooperation will be highly appreciated. Thank you for your valuable time.
- February 8, 2024 at 10:52 pm
  
  Ushnish Basu
  Ansys Employee
  
  This error occurs if the number of neighboring particles is greater than MAXNEI in CONTROL_DISCRETE_ELEMENT. One way this can happen is if the DES contact stiffness is too weak.