Today, in order to be competitive in a fierce global car market, higher demands are placed on the perceived quality (PQ) of the products. The end customer's visual impression of fit and finish are one of several factors influencing the overall PQ. When assessing the PQ of split-lines, the assumed geometric variation of the ingoing parts is an important prerequisite for trustworthy visualization and for correct judgments. To facilitate early decision making in conceptual phases, new demands are set on virtual tools and methods to support the engineers. In this study, a method for early evaluation of the impact of geometrical variation on PQ of split-lines is proposed. Starting from an exterior styling model, mesh morphing techniques have been used to distort the exterior model according to measurement data acquired in running production. Morphing techniques have also been used to adopt previous structural design solutions onto the new styling, in order to make an early assumption of the assembly stiffness. The used method is described and adopted in an industrial case. The study shows that the presented technique can be used to create continuous and correlated datasets. Non-rigid part behavior can be included in early PQ evaluations, even if the final detailed engineering design models do not yet exist.

References

References
1.
Hossoy
,
I.
,
Papalambros
,
P.
,
Gonzales
,
R.
, and
Aitken
,
T. J.
,
2004
, “
Modeling Customer Perceptions of Craftsmanship in Vehicle Interior Design
,” TMCE: 1-12, Millpress, Rotterdam, Lausanne, Switzerland.
2.
Wickman
,
C.
, and
Söderberg
,
R.
,
2009
, “
Importance of Navigation Method in Virtual Environments During Non-Nominal Evaluation of Perceived Quality
,”
Proceedings of the 11th International Conference on Computer Aided Tolerancing
, Mar. 26–27, Annecy, France.
3.
Forslund
,
K.
,
2011
, “
Visual Robustness: Effects of Variation on Product Appearance and Perceived Quality
,” Ph.D. thesis, Chalmers University of Technology, Göteborg.
4.
Wickman
,
C.
, and
Söderberg
,
R.
,
2010
, “
Retrospective Analysis and Evaluation of Non-Nominal Visualization as Means for Evaluation of Perceived Quality in the Automotive Industry
,”
Proceedings of the 8th International NordDesign Conference 2010
, Aug. 25–27, Göteborg.
5.
RD&T Technology AB
,
2011
, “
RD&T Software Manual
,” Mölndal, Sweden.
6.
Dimensional Control Systems, Inc.
,
2012
,
Software Help Manual
,
Troy
,
Michigan
.
7.
Wickman
,
C.
,
Söderberg
,
R.
, and
Lindkvist
,
L.
,
2003
, “
Toward Non-Nominal Virtual Geometric Verification by Combining VR and CAT Technologies
,”
Geometric Product Specification and Verification: Integration of Functionality
,
P.
Bourdet
and
L.
Mathieu
, eds.,
Kluwer Academic Publishers
,
Dordrecht
.
8.
Forslund
,
K.
,
Wagersten
,
O.
,
Tafuri
,
S.
,
Segerdahl
,
D.
,
Carlson
,
J. S.
,
Lindkvist
,
L.
, and
Söderberg
,
R.
,
2011
, “
Parameters Influencing the Perception of Geometrical Deviations in a Virtual Environment
,”
Proceedings of the ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
, Aug. 28–31, Washington, DC, Vol. 9, pp.
1105
1114
.
9.
Dahlström
,
S.
,
2005
, “
Variation Simulation of Sheet Metal Assemblies for Geometrical Quality, Parameter Modeling and Analysis
,” Ph.D. thesis, Department Product and Production Development, Chalmers University of Technology, Göteborg, Sweden.
10.
Wärmefjord
,
K.
,
2011
, “
Variation Control in Virtual Product Realization—A Statistical Approach
,” Ph.D. thesis, Department Product and Production Developmen,Chalmers University of Technology, Göteborg, Sweden.
11.
Liu
,
S. C.
, and
Hu
,
S. J.
,
1997
, “
Variation Simulation for Deformable Sheet Metal Assemblies Using Finite Element Methods
,”
Trans. ASME J. Manuf. Sci. Eng.
,
119
(
3
), pp.
368
374
.10.1115/1.2831115
12.
Camelio
,
J. A.
,
Hu
,
S. J.
, and
Marin
,
S. P.
,
2004
, “
Compliant Assembly Variation Analysis Using Component Geometric Covariance
,”
Trans. ASME J. Manuf. Sci. Eng.
,
126
(
2
), pp.
355
360
.10.1115/1.1644553
13.
Liu
,
Y. G.
, and
Hu
,
S. J.
,
2005
, “
Assembly Fixture Fault Diagnosis Using Designated Component Analysis
,”
ASME J. Manuf. Sci. Eng.
,
127
, pp.
358
368
.10.1115/1.1852572
14.
Camelio
,
J. A.
, and
Hu
,
S. J.
,
2004
, “
Multiple Fault Diagnosis for Sheet Metal Fixtures Using Designated Component Analysis
,”
Trans. ASME J. Manuf. Sci. Eng.
,
126
(
1
), pp.
91
97
.10.1115/1.1643076
15.
Dahlström
,
S.
, and
Lindkvist
,
L.
,
2007
, “
Variation Simulation of Sheet Metal Assemblies Using the Method of Influence Coefficients With Contact Modeling
,”
Trans. ASME J. Manuf. Sci. Eng.
,
129
(
3
), pp.
615
622
.10.1115/1.2714570
16.
Wärmefjord
,
K.
,
Lindkvist
,
L.
, and
Söderberg
,
R.
,
2009
, “
Tolerance Simulation of Compliant Sheet Metal Assemblies Using Automatic Node-Based Contact Detection
,”
ASME IMECE 2008, New Developments in Simulation Methods and Software for Engineering Applications
, Vol.
14
,
ASME
,
New York
, pp.
35
44
.
17.
Segeborn
,
J.
,
Wärmefjord
,
K.
,
Carlson
,
J. S.
, and
Söderberg
,
R.
,
2011
, “
Evaluating Genetic Algorithms on Welding Sequence Optimization With Respect to Dimensional Variation and Cycle Time
,”
ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
, Washington, DC, Paper No. IDETC/CIE 2011.
18.
Alexa
,
M.
,
2002
, “
State-of-the-Art Reviews: Recent Advances in Mesh Morphing
,”
Computer Graph. Forum
,
21
(
2
), pp.
173
197
.10.1111/1467-8659.00575
19.
Van der Auweraer
,
H.
,
Van Langenhove
,
T.
,
Brughmans
,
M.
,
Bosmans
,
I.
,
El Masri
,
N.
, and
Donders
,
S.
,
2007
, “
Application of Mesh Morphing Technology in the Concept Phase of Vehicle Development
,”
Int. J. Veh. Des., Issue on Computer Aided Automotive Development
,
43
(
1–4
), pp.
281
305
.
20.
Chalipat
,
S.
,
Thorat
,
A.
, and
Tatapudi
,
A.
,
2008
, “
Use of Morphing Tool to Bulid Parametric Finite Element Vehicle Models
,” Presented at HyperWorks Technology Conference 2008, July 31-Aug. 2, Bangalore, India.
21.
Jolliffe
,
I. T.
,
2002
,
Principal Component Analysis
,
2nd ed.
,
Springer Series in Statistics, Springer
,
New York
.
22.
Altair Engineering GmbH
,
2012
, “
Altair HyperWorks User's Manual
” (online help), Böblingen, Germany.
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