Simple MES Simulation - Odd Error(s)

[nav]

Have been setting up an extremely simple (see attached image) bolted connection in MES with Nonlinear Material Models and attempting to get it to run.  However, it appears to go through a number of iterations before an error pops up.  All that's in the model right now is the bolt preload. Any suggestions as to how I fix this? My experience with MES and Nonlinear is limited so I may have been setting up things incorrectly?

Thanks in advance.

Autodesk(R) Simulation Mechanical Event Simulation (MES)
Version 2012.01.00.0017-W64/X64 15-Jun-2011
Copyright (c) 2011, Autodesk, Inc. All rights reserved.

** Total available memory = 31630704 (KB).
** Options executed are:
NOMIN - NO optimization for matrix storage
RUN - Execute processor
STRAIN - Output strain data for Superview
DUPLEX - Duplex communication with tWAIT=5 seconds
PRRO - Output reaction force data, n=2
PRCD - Output contact diagnostics data

NUMNP DOF NEGL NEGNL MODEX NSTE DT TSTART IPRI IPSF
1305 000000 0 4 1 20 0.500E-01 0.000E+00 1 3

** Perform analysis
** Open output files ...
** Open temporary files ...
** Reading input file ...

PROGRAM VERSION: 201201000017
alg-win-x64.dll VERSION: 201201000017
algconfig-win-x64.dll VERSION: 201201000017
agsdb_ar-win-x64.dll VERSION: 201201000017
amgsolve.exe VERSION: 0360000000

Model=C:\Users\vanisna\Desktop\Bolted MES.ds_data\1\ds

**** Model Unit System Settings:
--------------------------------------------
Unit System : English (in)
Force : lbf
Length : in
Time : s
Temperature (Absolute) : deg F (R)
Thermal Energy : in*lbf
Voltage : V
Current : A
Electrical Resistance : ohm
Mass : lbf*s^2/in
--------------------------------------------

No. of nodes = 1305 No. of equations = 3927
Maximum no. of iteration = 30 No. of steps = 20
Convergence tolerance = 5.0000E-03
** Input elements...
** 3-D continuum element calculation, number of element = 237
** 3-D continuum element calculation, number of element = 212
** 3-D beam element calculation, number of element = 42
S-S contact will be used for contact pair, 1
** 3-D surface contact element calculation (Initial),
number of element = 6258
** Nonzero entries initially in upper triangle matrix = 188502
** BCSLIB-EXT Sparse Solver Solution

Time Percent DT L Iter. Residual
0.000000 0.00 0.050000 1 0 0.0000E+00
0.050000 5.00 0.050000 1 1 1.0000E+00
0.050000 5.00 0.050000 1 2 4.3801E-01
0.050000 5.00 0.050000 1 3 1.3127E-01
0.050000 5.00 0.050000 1 4 1.9979E-02
0.050000 5.00 0.050000 1 5 1.6850E-04c
forrtl: severe (47): write to READONLY file, unit 32, file C:\Users\v****na\Desktop\Bolted MES.ds_data\1\ds.al
Image PC Routine Line Source
arun4.exe 0000000140D6AD48 Unknown Unknown Unknown
arun4.exe 0000000140D65C29 Unknown Unknown Unknown
arun4.exe 0000000140D1CBFD Unknown Unknown Unknown
arun4.exe 0000000140D036C7 Unknown Unknown Unknown
arun4.exe 0000000140D02F91 Unknown Unknown Unknown
arun4.exe 0000000140CB8EC7 Unknown Unknown Unknown
arun4.exe 000000014002B59F COPYRT 21 copyrt.for
arun4.exe 00000001401812F3 FMAIN 438 yapak4.for
arun4.exe 000000014067116C MAIN__ 333 fallocn.for
arun4.exe 0000000140EDDEAC Unknown Unknown Unknown
arun4.exe 0000000140D4DE5F Unknown Unknown Unknown
kernel32.dll 0000000076BF652D Unknown Unknown Unknown
ntdll.dll 00000000770DC521 Unknown Unknown Unknown

[S.LI]

I think similar problems reported before. ds.al is just a text file.

Does it happen consistently?

My understanding is this is a kind of random crash caused by some unknown reasons.

Could you please try it some time later, or in another machine, or after restarting your machine?

If it keeps crashing, could you share it with us?

Thanks.

[zhuangs]

This random crash error on the summary file (ds.al) has been reported by some users.  And I also encountered this random crash error a few time on my desktop, but it cannot be repeated on the other same brand machines.

If we run the same model a few times, the random crash error might happen at the end of different steps.  I also found that the random crash error usually happens to some simple models, which run very faster.

Shoubing