四柱试验台整车仿真问题
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各位大侠,劳烦各位帮忙解决一下!!!
在用adams自带四柱试验台进行整车平顺性仿真时,出现警告个过约束问题。但整车模型经过检验是没有过约束的,而且能够进行操稳仿真的。小弟水平浅,拜托各位!!! 详细仿真过程信息文件见附件!
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...
Enter ADAMS model file name or Carriage Return or ? (or STOP):
No model input file (ADM file) is given.
Enter Command:
file/model=test_fourpost
A new model supplied. Initialization starts...
The default input and analysis values will be restored.
CPU time used = 0.4680 seconds
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 .. test_fourpost.adm
Default file names for output files
Tabular output file:
test_fourpost.out
Diagnostic file :
test_fourpost.msg
Message Database file :
test_fourpost.mdb
Graphics file :
test_fourpost.gra
Request file :
test_fourpost.req
Results file :
test_fourpost.res
Input Phase - Reading in Model
***********************************************************
Adams/Solver dataset Title:
Adams/Car Assembly (MD Adams 2010)
***********************************************************
Reading of model complete.
Adams/Car MD Adams 2010
Processing ENVIRONMENT entries in 'C:\MSC.Software\MD_Adams\2010\acar/acar.cfg'
Processing ENVIRONMENT entries in 'C:\Users\Administrator/.acar.cfg'
Processing ENVIRONMENT entries in 'C:\MSC.Software\MD_Adams\2010\aride/aride.cfg'
=================================================================
Adams/Tire
Version MD Adams 2010
=================================================================
Input Phase - Populating Solver database
Input Phase Complete.
CPU time is 0.7020 seconds.
---- WARNING ----
Displacement of MOTION test_fourpost.testrig.jms_post_pad_vertical_lf.motion differs from its specified
initial condition by 0.52105 .
---- WARNING ----
Displacement of MOTION test_fourpost.testrig.jms_post_pad_vertical_rf.motion differs from its specified
initial condition by -0.52105 .
---- WARNING ----
Displacement of MOTION test_fourpost.testrig.jms_post_pad_vertical_rr.motion differs from its specified
initial condition by -0.52105 .
---- WARNING ----
Displacement of MOTION test_fourpost.testrig.jms_post_pad_vertical_lr.motion differs from its specified
initial condition by 0.52105 .
Input and Input Check Phase complete.
The following equations impose the redundant constraints:
11 REVOL JOI/11 Y
13 REVOL JOI/11 Zi.Xj
14 REVOL JOI/11 Zi.Yj
18 REVOL JOI/12 Zi.Xj
19 REVOL JOI/12 Zi.Yj
31 REVOL JOI/23 Y
33 REVOL JOI/23 Zi.Xj
34 REVOL JOI/23 Zi.Yj
38 REVOL JOI/24 Zi.Xj
39 REVOL JOI/24 Zi.Yj
183 FIXED JOI/210 Xi.Yj
185 FIXED JOI/210 Zi.Yj
187 FIXED JOI/211 Y
189 FIXED JOI/211 Xi.Yj
191 FIXED JOI/211 Zi.Yj
196 FIXED JOI/212 Zi.Xj
197 FIXED JOI/212 Zi.Yj
199 FIXED JOI/213 Y
202 FIXED JOI/213 Zi.Xj
203 FIXED JOI/213 Zi.Yj
The mechanism has 20 redundant constraints which are equations that
remove the same degrees of freedom as other constraints imposed upon the
motion. The redundant constraints will be deactivated for the simulation.
=======================================================================
Note carefully: The constraint reaction forces corresponding to the
inactive constraints will be set to zero.
=======================================================================
The system has 620 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...
还剩下的发不了了。。。
在用adams自带四柱试验台进行整车平顺性仿真时,出现警告个过约束问题。但整车模型经过检验是没有过约束的,而且能够进行操稳仿真的。小弟水平浅,拜托各位!!! 详细仿真过程信息文件见附件!
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...
Enter ADAMS model file name or Carriage Return or ? (or STOP):
No model input file (ADM file) is given.
Enter Command:
file/model=test_fourpost
A new model supplied. Initialization starts...
The default input and analysis values will be restored.
CPU time used = 0.4680 seconds
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 .. test_fourpost.adm
Default file names for output files
Tabular output file:
test_fourpost.out
Diagnostic file :
test_fourpost.msg
Message Database file :
test_fourpost.mdb
Graphics file :
test_fourpost.gra
Request file :
test_fourpost.req
Results file :
test_fourpost.res
Input Phase - Reading in Model
***********************************************************
Adams/Solver dataset Title:
Adams/Car Assembly (MD Adams 2010)
***********************************************************
Reading of model complete.
Adams/Car MD Adams 2010
Processing ENVIRONMENT entries in 'C:\MSC.Software\MD_Adams\2010\acar/acar.cfg'
Processing ENVIRONMENT entries in 'C:\Users\Administrator/.acar.cfg'
Processing ENVIRONMENT entries in 'C:\MSC.Software\MD_Adams\2010\aride/aride.cfg'
=================================================================
Adams/Tire
Version MD Adams 2010
=================================================================
Input Phase - Populating Solver database
Input Phase Complete.
CPU time is 0.7020 seconds.
---- WARNING ----
Displacement of MOTION test_fourpost.testrig.jms_post_pad_vertical_lf.motion differs from its specified
initial condition by 0.52105 .
---- WARNING ----
Displacement of MOTION test_fourpost.testrig.jms_post_pad_vertical_rf.motion differs from its specified
initial condition by -0.52105 .
---- WARNING ----
Displacement of MOTION test_fourpost.testrig.jms_post_pad_vertical_rr.motion differs from its specified
initial condition by -0.52105 .
---- WARNING ----
Displacement of MOTION test_fourpost.testrig.jms_post_pad_vertical_lr.motion differs from its specified
initial condition by 0.52105 .
Input and Input Check Phase complete.
The following equations impose the redundant constraints:
11 REVOL JOI/11 Y
13 REVOL JOI/11 Zi.Xj
14 REVOL JOI/11 Zi.Yj
18 REVOL JOI/12 Zi.Xj
19 REVOL JOI/12 Zi.Yj
31 REVOL JOI/23 Y
33 REVOL JOI/23 Zi.Xj
34 REVOL JOI/23 Zi.Yj
38 REVOL JOI/24 Zi.Xj
39 REVOL JOI/24 Zi.Yj
183 FIXED JOI/210 Xi.Yj
185 FIXED JOI/210 Zi.Yj
187 FIXED JOI/211 Y
189 FIXED JOI/211 Xi.Yj
191 FIXED JOI/211 Zi.Yj
196 FIXED JOI/212 Zi.Xj
197 FIXED JOI/212 Zi.Yj
199 FIXED JOI/213 Y
202 FIXED JOI/213 Zi.Xj
203 FIXED JOI/213 Zi.Yj
The mechanism has 20 redundant constraints which are equations that
remove the same degrees of freedom as other constraints imposed upon the
motion. The redundant constraints will be deactivated for the simulation.
=======================================================================
Note carefully: The constraint reaction forces corresponding to the
inactive constraints will be set to zero.
=======================================================================
The system has 620 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...
还剩下的发不了了。。。