simpack-scripting techniques used in parameter- variation ... · ugm -2016/euro mbs siemens...
TRANSCRIPT
![Page 1: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/1.jpg)
Simpack-Scripting Techniques Used in Parameter-
Variation Analysis of Rail Vehicle Dynamics
Shiping Dongfang, M.Eng. | Chair of Rail Vehicles | DASSAULT SYSTÈMES User Conference 2018
![Page 2: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/2.jpg)
Contents
• Background
• Simpack-Scripting helps achieve…
• Desired functionalities and their realization
• Challenges to work on in the next steps
Not an introduction of the research itself
but an exchange of experience with the technique
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 2
![Page 3: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/3.jpg)
Background – the research itself
• Two-axle bogies with small-diameter wheels:
• Behaviour?
• Dynamics
• Stability / critical velocity?
• Curve negotiability /
derailment risk?
• Maintainability
• Wear / tread degradation
intensity?
• Maintaining operation soundness
• Tread optimization?
• Passive steering?
• …
Methodology:
theoretic – calculation-based – simulation –
parameter variation
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 3
Loadi
ng he
ight
Klingel’s equation:
𝐿↓ = 2𝜋𝑟↓𝑒
2λ
r↓ → C↓ → n|s=s*↑ → earlier fatigue
r↓ → κ↑ → contact stress concentration
![Page 4: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/4.jpg)
Simpack-Scripting helps achieve…
• Parameter variation
• Same procedures repeated over
thousands of times with different
parameter combinations – automation
favourable
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 4
Test purpose
Test track layout
Track gauge
Rail cant
Test speed
Tread profile
Radial steering
Wheel radius
…
…
…
Sce
na
rio p
ara
mete
rs
Desig
n p
ara
me
ters
![Page 5: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/5.jpg)
Simpack-Scripting helps achieve…
• Parameter variation
• Same procedures repeated over
thousands of times with different
parameter combinations – automation
favourable
• Efficiency of research workflow
• Waiting time for preceding process can
be used for planning/setting up script for
succeeding process
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 5
Mu
ltiple
time
inte
gra
tion
s
Model
Binary
results
Pla
nn
ing
Scrip
ting
Post-script
&
@
6
![Page 6: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/6.jpg)
Simpack-Scripting helps achieve…
• Parameter variation
• Same procedures repeated over
thousands of times with different
parameter combinations – automation
favourable
• Efficiency of research workflow
• Waiting time for preceding process can
be used for planning/setting up script for
succeeding process
• Logging modelling processes with
scripts – small file size, model rebuild /
rollback automatic
• Independent of Simpack version
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 6
![Page 7: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/7.jpg)
Simpack-Scripting helps achieve…
• Parameter variation
• Same procedures repeated over
thousands of times with different
parameter combinations – automation
favourable
• Efficiency of research workflow
• Waiting time for preceding process can
be used for planning/setting up script for
succeeding process
• Logging modelling processes with
scripts – small file size, model rebuild /
rollback automatic
• Independent of Simpack version
• No additional licence requirements
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 7
Source: Girstmair, B., Siemens AG, Euro-MBS-BGM 2016
www.3ds.com/fileadmin/EVENTS/SIMULIA-Simpack/archive-EURO-MBS-
UGM-2016/Euro-MBS-UGM-Siemens-Girstmair.pdf
Source: Simpack 9.10 help
![Page 8: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/8.jpg)
Desired functionalities and their realization
Value assignment & model/solver setup:
Cycle through desired value combinations for
design (input) parameters of interest
Cycle through desired testing conditions
(scenarios) dictated by purpose
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 8
print("\n -> Wheel radius - ");
var r_val=new Array;
for(ri=0.5;ri>=0.12;ri=ri-0.02)//m
{
r_val.push(ri.toFixed(3).toString());
print(ri+"m\t");
}
print("\n -> Track gauge - ");
var gauge_val=new Array("1.435","1.432","1.430","1.437");
for (gi=0;gi<gauge_val.length;gi++)
{
print(gauge_val[gi]+"\t");
}
...
for (var igauge=0;igauge<gauge_val.length;igauge++){
for (var ir=0;ir<r_val.length;ir++){
...
}}...
![Page 9: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/9.jpg)
Desired functionalities and their realization
Value assignment & model/solver setup:
Cycle through desired value combinations for
design (input) parameters of interest
Cycle through desired testing conditions
(scenarios) dictated by purpose
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 9
var m=Spck.openModel(mName);
m.findElement("$_Beladungszustand").str.src = load_val[iload];
m.findElement("$_DoE_r0").str.src = r_val[ir];
m.findElement("$_DoE_Gauge").str.src = gauge_val[igauge];
m.findElement("$_DoE_Tread_Profile").str.src = '"'+prw_val[iprw]+'.prw"';
...
m.track.active.src = "$Trk_Curve_"+cat_val[icat];
m.slv.active.src = "$SLV_Recommended_B_17_1_3_Curve";
Spck.Slv.vehicleVelocities(m);
m.time.src = 0;
m.findElement("$ST_Nominal").copyToModel();
Spck.Slv.preld(m);
m.save();
Spck.Slv.integ(m);
Spck.Slv.meas(m);
m.close();
![Page 10: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/10.jpg)
Desired functionalities and their realization
• Evaluations:
• Behaviour?
• Dynamics
• Stability / critical velocity?
• Curve negotiability /
derailment risk?
• Maintainability
• Wear?
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 10
Source: Polach. On non-linear methods of bogie stability assessment using computer
simulations. Proc.IMechE Vol. 220, Part F: J. Rail and Rapid Transit, 13-27
![Page 11: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/11.jpg)
All velocities
Desired functionalities and their realization
Stability evaluations:
• Declination curve method
• Constant speed method
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 11
![Page 12: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/12.jpg)
Desired functionalities and their realization
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 12
Preliminary stability judgment for current speed lim𝑡→∞
𝑦𝑊𝑆1 𝑡 = 𝐶 → 𝑦𝑊𝑆1 𝜏 − 𝐶 < 𝜀
• 1 – has simulation ran long enough (>56s)? Y-proceed, N-”INCONCLUSIVE”
• 2 – for all 55s < t < 60s, |y(t) – C| < ε? (C=0mm, ε=1mm) Y-”STABLE”, N-”UNSTABLE”
xMax
Filter 112 -
Threshold Count
![Page 13: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/13.jpg)
All velocities
Desired functionalities and their realization
Stability evaluations:
• Declination curve method
• Constant speed method
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 13
Summarize stability in simulations with all
parameters in one spreadsheet
(Create external text file and write parameters
and stability results in by line through script)
![Page 14: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/14.jpg)
All velocities
Desired functionalities and their realization
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 14
Non-linear critical velocity
(resolution 2km/h)
No
n-L
ine
ar
Cri
tic
al V
elo
cit
y
Wheel Diameter
Condition 1
Condition 2
Condition 3
(Not actual data;
results currently
unavailable)
![Page 15: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/15.jpg)
Desired functionalities and their realization
• Evaluations:
• Behaviour?
• Dynamics
• Stability / critical velocity?
• Curve negotiability /
derailment risk?
• Maintainability
• Wear?
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 15
Source: EN 14363-2016
![Page 16: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/16.jpg)
Desired functionalities and their realization
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 16
Source: EN 14363-2016
![Page 17: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/17.jpg)
Desired functionalities and their realization
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 17
Tracks with very
small (CAT4) and
large (CAT2) radii
available
On each track, test with 3 velocity-superelevation
combinations respectively representing cant
deficiency, cant excess and near-ideal curving
(“centrifugal”, “centripetal” and “uniform circular”)
Track geometry conforms to
requirements in EN 13803:2017
![Page 18: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/18.jpg)
Desired functionalities and their realization
• Evaluations:
• Behaviour?
• Dynamics
• Stability / critical velocity?
• Curve negotiability /
derailment risk?
• Maintainability
• Wear?
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 18
𝑇𝛾
𝑇𝛾𝐿
0
𝑑𝑠
![Page 19: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/19.jpg)
Desired functionalities and their realization
Curve negotiation safety evaluations:
• Criteria with reference to EN 14363
(Y, ∑Y, Y/Q)
Without statistical analysis
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 19
• With wear analysis
(Tγ wear number + accumulated wheel-
rail wear work throughout simulated run)
Plot original time histories and processed results per wheel/set • Time histories → distance domain – x-axis data source swap to displacement
• Lateral wheel/rail force – sliding mean (in distance domain)
• Wear number – integrate (over distance) → accumulated wear work
Realized with filters – configured and implemented with QSA script
Identify input parameters • From SubVars in result file
Determine evaluation outputs • Y, ∑Y, Y/Q – maximum, minimum (force
directionality; essentially maximum)
• Wear – work done over the test track
Compile input and output of each run in summary spreadsheet
I
n
d
e
x
Inputs Outputs
Veh-Trk
system
pars
Test
condition
pars
Y ∑Y Y/Q Wear work
Each
wheel |Y|max
Critical
wheel
Each
wheelset |∑Y|max
Critical
wst.
Each
wheel |Y|max
Critical
wheel
Each
wheel
∑ All
wheels
![Page 20: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/20.jpg)
Desired functionalities and their realization (Conclusion)
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 20
Set design parameter
(r0, tread, passive steering…)
Set scenario
(select track and solver settings)
(set value for gauge, cant, v, …)
Time integration +
measurements
SPCK setup
Plot outputs
SBR
Plot export
as image Result analysis
Stability
Curve negotiation
SPF
Determine stability for v
(constant-v method)
Determine max.ΣY, Y/Q
Compile
results in
summary
table
Determine
NL.Vc Iterate
Observe trend of response-
factor relationships
![Page 21: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/21.jpg)
Challenges to work on in the next steps
• Too many runs, overall result file size too
large - threatens depleting disc space
• Automatic re-runs of simulations that failed to
run through (reached Wall Clock Time)
• Integrating scripts into tool kits with own GUIs
for future use by others …
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 21
(GUI of Simpack example script “sir_reader.qs”)
Unselect unnecessary simulation
outputs (e.g. animation)
Read logfile after script execution
and extract integrator stop messages;
register indices of such failed runs
and prepare for re-run
![Page 22: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/22.jpg)
Challenges to work on in the next steps
(… Integrating scripts into tool kits with own GUIs
for future use by others)
Potentially feasible extension:
• EN 14363:2016 allows vehicle running
characteristics acceptance through
simulations (conditional)
– possible demand for standardized
workflows in simulation tool
• Scripting – automate process:
• Model loading
• Acceptance test category selection
(§6, §7)
• Simulated acceptance test
• Result report
• Similar to “Wizard”
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 22
![Page 23: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/23.jpg)
Thank you for your attention Shiping Dongfang, M.Eng.
TU Berlin | Chair of Rail Vehicles
![Page 24: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/24.jpg)
(Additional slides for Q+A)
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 24
![Page 25: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/25.jpg)
Original scripts
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 25
(Converted to txt-files for quicker viewing in a normal text editor)
Exit slide show mode and double-click to open
![Page 26: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/26.jpg)
Result summary table from curve negotiation test
postprocessing (excerpt)
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 26
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_14'20'23_#0255_Curve_G1.435_C0_S1002_UIC60_L=-1_r0.460_CAT4_ar-_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_14'20'23_#0256_Curve_G1.435_C0_S1002_UIC60_L=-1_r0.460_CAT2_ar0_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_14'20'23_#0257_Curve_G1.435_C0_S1002_UIC60_L=-1_r0.460_CAT2_ar+_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_14'20'23_#0258_Curve_G1.435_C0_S1002_UIC60_L=-1_r0.460_CAT2_ar-_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_14'20'23_#0259_Curve_G1.435_C0_S1002_70pct_UIC60_L=-1_r0.460_CAT4_ar0_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_14'20'23_#0260_Curve_G1.435_C0_S1002_70pct_UIC60_L=-1_r0.460_CAT4_ar+_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_14'20'23_#0261_Curve_G1.435_C0_S1002_70pct_UIC60_L=-1_r0.460_CAT4_ar-_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_17'59'10_#2001_Curve_G1.435_C40_S1002_70pct_UIC60_L=1_r0.220_CAT4_ar-_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_17'59'10_#2002_Curve_G1.435_C40_S1002_70pct_UIC60_L=1_r0.220_CAT2_ar0_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_17'59'10_#2003_Curve_G1.435_C40_S1002_70pct_UIC60_L=1_r0.220_CAT2_ar+_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_17'59'10_#2004_Curve_G1.435_C40_S1002_70pct_UIC60_L=1_r0.220_CAT2_ar-_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_17'59'10_#2005_Curve_G1.435_C40_S1002_UIC60_L=1_r0.200_CAT4_ar0_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_17'59'10_#2006_Curve_G1.435_C40_S1002_UIC60_L=1_r0.200_CAT4_ar+_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_17'59'10_#2007_Curve_G1.435_C40_S1002_UIC60_L=1_r0.200_CAT4_ar-_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_17'59'10_#2008_Curve_G1.435_C40_S1002_UIC60_L=1_r0.200_CAT2_ar0_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_17'59'10_#2009_Curve_G1.435_C40_S1002_UIC60_L=1_r0.200_CAT2_ar+_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_17'59'10_#2010_Curve_G1.435_C40_S1002_UIC60_L=1_r0.200_CAT2_ar-_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_17'59'10_#2011_Curve_G1.435_C40_S1002_70pct_UIC60_L=1_r0.200_CAT4_ar0_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_17'59'10_#2012_Curve_G1.435_C40_S1002_70pct_UIC60_L=1_r0.200_CAT4_ar+_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_14'20'23_#0262_Curve_G1.435_C0_S1002_70pct_UIC60_L=-1_r0.460_CAT2_ar0_dis.sbr
F:/DONGFANG_Result_bail/result_bailout_1106_multi-curve/collected, currently till 3151/PÅšEMJENILI@2018-11-22_13'0'44/2018-11-6_14'20'23_#0263_Curve_G1.435_C0_S1002_70pct_UIC60_L=-1_r0.460_CAT2_ar+_dis.sbr
(May require exiting slide show mode to view)
![Page 27: Simpack-Scripting Techniques Used in Parameter- Variation ... · UGM -2016/Euro MBS Siemens Girstmair.pdf Source: Simpack 9.10 help . Desired functionalities and their realization](https://reader030.vdocument.in/reader030/viewer/2022021711/5d273b6888c9935d388c5255/html5/thumbnails/27.jpg)
Höpf Bifurcation and initial excitation choice
Simpack-Scripting in rail vehicle dynamics parameter-variation analysis | S. Dongfang | DSUC 2018
Page 27
Source: Polach. On non-linear methods of bogie stability assessment using computer
simulations. Proc.IMechE Vol. 220, Part F: J. Rail and Rapid Transit, 13-27