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[求助] Adams整车仿真失败,高手大虾们帮忙看看O(∩_∩)O谢谢

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发表于 2010-5-7 09:42:28 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式

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整车模型是通过修改template模板,之后组建的。
仿真的时候出现以下提示:
Setting up the vehicle assembly for the FOUR_POST_TESTRIG...
Reading in property files...
Reading of property files completed.
Setup of the vehicle assembly is completed.
Simulation is beginning...
Starting analysis #1 of vehicle assembly...


   **************************************************************
   *                                                            *
   *                 MSC.Software Corporation                   *
   *                                                            *
   *                  A D A M S / S o l v e r                   *
   *                                                            *
   *      Automatic Dynamic Analysis of Mechanical Systems      *
   *                                                            *
   *      2010-05-07 09:29:07              Version 2005.0.0     *
   *                                                            *
   *                                                            *
   **************************************************************
  
   Enter ADAMS model file name or Carriage Return or ? (or STOP):

   No model input file (ADM file) is given.
  
   Enter Command:
   file/model=try_fourpost
   A new model supplied.  Initialization starts...
  
   The default input and analysis values will be restored.
  
   CPU time used = 0.46875 seconds
   ADAMS/Car 2005.0.0
   ID = 1
   Enter ADAMS model file name or Carriage Return or ? (or STOP):
   Enter ADAMS output file name or ? (default is same as input):
     ADAMS model file .. try_fourpost.adm
  
   Default file names for output files
  
     Tabular output file:
     try_fourpost.out
  
     Diagnostic file    :
     try_fourpost.msg
  
     Message Database file    :
     try_fourpost.mdb
  
     Graphics file      :
     try_fourpost.gra
  
     Request file       :
     try_fourpost.req
  
     Results file       :
     try_fourpost.res
  
   Input Phase - Reading in Model
  
   ***********************************************************
   ADAMS/Solver dataset Title:
   ADAMS/Car Assembly (v2005.0.0)
   ***********************************************************
   Reading of model complete.
  
   Input Phase - Populating Solver database
  
   Input Phase Complete.
  
   CPU time is 0.46875 seconds.
   Input and Input Check Phase complete.
   The system has 20 kinematic degrees of freedom.
   Enter Command:
   preferences/solver=F77
   Enter Command:
   output/nosep
   Enter Command:
   equilibrium/ stability=1.0e-4
   Enter Command:
   diff/2, fun=0
   Enter Command:
   diff/3, fun=0
   Enter Command:
   diff/5, fun=0
   Enter Command:
   diff/4, fun=0
   Enter Command:
   simulate/statics
   Input and Input Check Phase complete.
   Current ADAMS model successfully verified.
   Entering the static equilibrium analysis phase...
   Displacement initial condition analysis...
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 604
   Number of non-zero entries ...... = 4284
   Percentage of matrix non-zero ... = 1.1743
   Total space used in MD array .... = 376308
  
Reading configuration file 'd:\MSC.Software\MSC.ADAMS\2005\acar/acar.cfg'
Reading configuration file 'C:\Documents and Settings\Administrator/.acar.cfg'
Reading configuration file 'd:\MSC.Software\MSC.ADAMS\2005\aride/aride.cfg'
       TIRE ID:  1
       TYR900 -> Pacejka 89 Tire Model
       Using 2D Handling Road Contact v1.0
   
       TIRE ID:  2
       TYR900 -> Pacejka 89 Tire Model
       Using 2D Handling Road Contact v1.0
   
       TIRE ID:  3
       TYR900 -> Pacejka 89 Tire Model
   
       3D Contact:
       SHAPE table not found in tire property file.
       Tire carcass shape defaults to a cylinder.
       Using 2D Handling Road Contact v1.0
   
       TIRE ID:  4
       TYR900 -> Pacejka 89 Tire Model
   
       3D Contact:
       SHAPE table not found in tire property file.
       Tire carcass shape defaults to a cylinder.
       Using 2D Handling Road Contact v1.0
   
   Performing Static analysis...
   Generating the Jacobian matrix for the statics or quasi-statics problem.
  
   Jacobian Matrix Statistics for Statics
   ======================================================
   Number of equations ............. = 1645
   Number of non-zero entries ...... = 16835
   Percentage of matrix non-zero ... = 0.62213
   Total space used in MD array .... = 694796
  
   Symbolic refactorization attempted at time = 0.0.
   Static equilibrium was found after 6 iterations.
   The maximum error is 1.28960E-05 with a maximum imbalance of 4.12865E-09.
   Enter Command:
   deactivate/jprim, id=6
   Enter Command:
   deactivate/jprim, id=7
   Enter Command:
   simulate/dynamics, end=10.0, steps=4000
   Input and Input Check Phase complete.
   The system has 23 kinematic degrees of freedom.
   Current ADAMS model successfully verified.
   Begin the dynamic analysis.
  
   The system is modelled with INDEX-3 DAEs.
   The integrator is GSTIFF, CORRECTOR=original.
   Integration error = 1.0E-02
  
   Displacement initial condition analysis...
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 601
   Number of non-zero entries ...... = 4254
   Percentage of matrix non-zero ... = 1.1777
   Total space used in MD array .... = 443834
  
   Velocity initial condition analysis...
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 601
   Number of non-zero entries ...... = 4566
   Percentage of matrix non-zero ... = 1.2641
   Total space used in MD array .... = 446394
  
   Acceleration initial condition analysis...
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 1174
   Number of non-zero entries ...... = 7299
   Percentage of matrix non-zero ... = 0.52957
   Total space used in MD array .... = 480482
  
   Generating the Jacobian matrix for the displacements and velocities.
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 601
   Number of non-zero entries ...... = 4254
   Percentage of matrix non-zero ... = 1.1777
   Total space used in MD array .... = 443858
  
   Generating the Jacobian matrix for the accelerations and forces.
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 1174
   Number of non-zero entries ...... = 7299
   Percentage of matrix non-zero ... = 0.52957
   Total space used in MD array .... = 544436
  
   Generating the Jacobian matrix for the dynamics problem.
  
   Jacobian Matrix Statistics for a Dynamic Analysis
   ======================================================
   Number of equations ............. = 1642
   Number of non-zero entries ...... = 18446
   Percentage of matrix non-zero ... = 0.68416
   Total space used in MD array .... = 863654
  
    Simulation         Time         Cumulative    Cumulative     Integrator
       Time            Step         Iterations    Steps Taken      Order
    ___________      ___________    __________    ___________    __________
    0.00000E+00      1.25000E-04           0              0           1
    1.25000E-04      1.25000E-04           4              1           1
---- WARNING ----
   The corrector has not converged after 6 attempts. No. of iterations = 10.
   The system has 23 kinematic degrees of freedom.
   At time 0.44125 and step 187 , ADAMS is adjusting solver and integrator
   parameters to attempt an integration restart.
   Displacement initial condition analysis...
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 601
   Number of non-zero entries ...... = 4254
   Percentage of matrix non-zero ... = 1.1777
   Total space used in MD array .... = 451204
  
   Velocity initial condition analysis...
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 601
   Number of non-zero entries ...... = 4254
   Percentage of matrix non-zero ... = 1.1777
   Total space used in MD array .... = 451692
  
   Acceleration initial condition analysis...
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 1174
   Number of non-zero entries ...... = 7299
   Percentage of matrix non-zero ... = 0.52957
   Total space used in MD array .... = 493970
  
   Generating the Jacobian matrix for the displacements and velocities.
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 601
   Number of non-zero entries ...... = 4254
   Percentage of matrix non-zero ... = 1.1777
   Total space used in MD array .... = 451716
  
   Generating the Jacobian matrix for the accelerations and forces.
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 1174
   Number of non-zero entries ...... = 7299
   Percentage of matrix non-zero ... = 0.52957
   Total space used in MD array .... = 565782
  
   Generating the Jacobian matrix for the dynamics problem.
  
   Jacobian Matrix Statistics for a Dynamic Analysis
   ======================================================
   Number of equations ............. = 1642
   Number of non-zero entries ...... = 18446
   Percentage of matrix non-zero ... = 0.68416
   Total space used in MD array .... = 880612
  
    Simulation         Time         Cumulative    Cumulative     Integrator
       Time            Step         Iterations    Steps Taken      Order
    ___________      ___________    __________    ___________    __________
    4.41250E-01      1.25000E-04         654            186           1
---- WARNING ----
   The corrector has not converged after 6 attempts. No. of iterations = 10.
   The system has 23 kinematic degrees of freedom.
   At time 0.44125 and step 187 , ADAMS is adjusting solver and integrator
   parameters to attempt an integration restart.
   At integration time 0.44125 , the simulation is switching to a
   modified corrector algorithm.  The error norm will control integration
   variables only.
   At integration time 0.44125 , an Aitken formula over 5 previous
   iterations will be used to accelerate the convergence of the corrector.
   Displacement initial condition analysis...
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 601
   Number of non-zero entries ...... = 4254
   Percentage of matrix non-zero ... = 1.1777
   Total space used in MD array .... = 451692
  
   Velocity initial condition analysis...
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 601
   Number of non-zero entries ...... = 4254
   Percentage of matrix non-zero ... = 1.1777
   Total space used in MD array .... = 451692
  
   Acceleration initial condition analysis...
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 1174
   Number of non-zero entries ...... = 7299
   Percentage of matrix non-zero ... = 0.52957
   Total space used in MD array .... = 493970
  
   Generating the Jacobian matrix for the displacements and velocities.
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 601
   Number of non-zero entries ...... = 4254
   Percentage of matrix non-zero ... = 1.1777
   Total space used in MD array .... = 451716
  
   Generating the Jacobian matrix for the accelerations and forces.
  
   Jacobian Matrix Statistics for the Initial Conditions
   ======================================================
   Number of equations ............. = 1174
   Number of non-zero entries ...... = 7299
   Percentage of matrix non-zero ... = 0.52957
   Total space used in MD array .... = 565782
  
   Generating the Jacobian matrix for the dynamics problem.
  
   Jacobian Matrix Statistics for a Dynamic Analysis
   ======================================================
   Number of equations ............. = 1642
   Number of non-zero entries ...... = 18446
   Percentage of matrix non-zero ... = 0.68416
   Total space used in MD array .... = 880612
  
    Simulation         Time         Cumulative    Cumulative     Integrator
       Time            Step         Iterations    Steps Taken      Order
    ___________      ___________    __________    ___________    __________
    4.41250E-01      1.25000E-04         707            186           1
---- WARNING ----
   The corrector has not converged after 6 attempts. No. of iterations = 20.
   The system has 23 kinematic degrees of freedom.
---- ERROR ----
   The simulation stopped at time = 0.44125 .  ADAMS cannot solve
   the equations of motion.
  
   The greatest error in an equation is 3.62063E-02 in the
   equation for GFORCE try_fourpost.TR_Front_Tires_til_wheel_force .
  
   The greatest change in a variable is 1.26342E-13 in the
   variable for PART try_fourpost.TR_Front_Tires_whl_wheel .
  
   Try the following in this order:
       1.  Use the MAXIT argument on the EQUILIBRIUM, IC, KINEMATICS,
           or INTEGRATOR command to increase the maximum number of
           iterations.
       2.  Temporarily change the value of the PATTERN argument on the
           EQUILIBRIUM, IC, KINEMATICS, or INTEGRATOR command to
           PATTERN = T.
       3.  Temporarily increase the value of the ERROR argument on the
           EQUILIBRIUM, IC, KINEMATICS, or INTEGRATOR command at
           time = 0.44125 .
       4.  If one or more forces change rapidly or sharply near
           time = 0.44125, modify the force or forces.
  
   Enter Command:
   !
   Enter Command:
   stop
   Terminating ADAMS/Car usersubs...
   ID = 1
  
      ADAMS/Solver execution terminated by subprogram A3TERM
  
   CPU time used = 13.891 seconds
One or more simulations were unsuccessful !
Please review the message file 'try_fourpost.msg' for details,
and verify the results with caution.
Simulation is complete.
麻烦各位大虾帮帮忙,不胜感激!~~~~~
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