pamcrash运行过程中报错？ 20

| 11) MATERIAL TYPE 301 WITH FAILURE AND ZERO DISTANCE        |

| 12) NODE ID USED FOR MORE THEN ONE RBODY COG                |

|                                                             |

|  V2005:                                                     |

|  ======                                                     |

| 13) EMPTY KEYWORD SELECTION FOR TIED INTERFACE              |

| 14) TIED INTERFACE FAILED TO ESTABLISH A CONNECTION         |

| 15) IMPROVEMENTS ON COMPOSITE DAMAGE WITH INPUT MODIFICATION|

| 16) CONSISTENCY OF ACFLD SUBTRACTION FOR THLOC OUTPUT       |

| 17) ADDED MASS ON COG NODE OF RBODY TYPE 0                  |

| 18) ADDED MASS ON COG NODE OF MBSYS RBODY TYPE 1            |

| 19) ACFLD and DAMP DEFINED ON ALL NODES OF RBODY TYPE 0     |

|                                                             |

| DATACHECKS 1, 2, 3, 4 AND 5 CAN BE SWITCHED OFF. HOWEVER,   |

| THEIR USE IS STRONGLY RECOMMENDED TO IMPROVE THE MODEL.     |

| SWITCHING OFF DATACHECK MAY CAUSE WRONG, UNRELIABLE AND     |

| UNSTABLE RESULTS.                                           |

+-------------------------------------------------------------+

     OPTIONS USED :

     ------------

                      1.  ANALYSIS     : EXPLICIT

                      2.  SOLVER       : CRASH

                      3.  UNIT         : M       KG        S   KELVIN

***** PROBLEM IN ASCII INPUT FILE : MAIN INPUT FILE                                                         

***** AT LINE :     16 FATAL READING ERROR (192700), PLEASE CHECK INPUT FILE 

*****  END RUN CRITERION EXPECTED

     *** ERROR *** OCCURRED IN INPUT PHASE, SEE ABOVE

这个报错是什么原因？