Memory Issue in ANSYS static structural mechanical APDL

- January 26, 2020 at 12:39 pm
  
  Faryal
  Subscriber
  
  I am using 24GB CORE I3 pc. I am simulating a hollow cylinder having cross beams. The model is 30 mm in diameter. 0.1 mm mesh size, static structural using workbench mechanical APDL IS giving me memory errors.
- January 27, 2020 at 11:58 am
  
  peteroznewman
  Subscriber
  
  Do you get memory errors if you use 1 mm mesh size?
- January 27, 2020 at 11:59 am
  
  Faryal
  Subscriber
  
  No there are no memory errors for 0.5 mm.
- January 27, 2020 at 12:01 pm
  
  Faryal
  Subscriber
  
  I have another PC OF 32 GB RAM having gtx 1050. But gtx1050 is incompatible with ANSYS and when i change to iterative from direct in solver output then it automatically selects direct solver when i see solver output.
- January 27, 2020 at 12:03 pm
  
  Faryal
  Subscriber
  
  Does ANSYS 19.2 solves this issue?
- January 27, 2020 at 12:22 pm
  
  Faryal
  Subscriber
  
  *** FATAL ***                           CP =     909.625   TIME= 17:205
  This model requires more scratch space than available. The program has
  currently allocated 38633 MB and was not able to allocate enough
  additional memory in order to proceed. Please increase the virtual
  memory on your system and/or increase the work space memory and rerun
  the program. Problem terminated.
  
  ERROR: Slave process(es) with rank(s) 1, 2, 3 have encountered a FATAL error.
  The information below was gathered from the file*.out output file(s).
  Please review the slave process output file(s) listed below for more
  details on this error.
  
  Slave Process Output File .file1.out:
  
  *** FATAL ***                           CP =     231.609   TIME= 17:205
  This model requires more scratch space than available. The program has
  currently allocated 15385 MB and was not able to allocate enough
  additional memory in order to proceed. Please increase the virtual
  memory on your system and/or increase the work space memory and rerun
  the program. Problem terminated.
  
  Slave Process Output File .file2.out:
  
  *** FATAL ***                           CP =     237.984   TIME= 17:205
  This model requires more scratch space than available. The program has
  currently allocated 13666 MB and was not able to allocate enough
  additional memory in order to proceed. Please increase the virtual
  memory on your system and/or increase the work space memory and rerun
  the program. Problem terminated.
  
  Slave Process Output File .file3.out:
  
  *** FATAL ***                           CP =     249.734   TIME= 17:205
  This model requires more scratch space than available. The program has
  currently allocated 13527 MB and was not able to allocate enough
  additional memory in order to proceed. Please increase the virtual
  memory on your system and/or increase the work space memory and rerun
  the program. Problem terminated.
- January 27, 2020 at 9:35 pm
  
  peteroznewman
  Subscriber
  
  No, ANSYS 19.2 will have the same issue. It will be best if you can install more memory in the computer. Even if you do, there will just be a higher limit. You have to learn to make a mesh that is coarse where the gradient and stress is low, and have a fine mesh where the gradient and stress is high. That is what some of the Mesh Controls such as Body Sizing - Sphere of Influence allows you to do. You have to put a coordinate system at the location of high stress.