10 Auto-Body Stories: Blondell Cummings and Autobiography in Dance

In the assembly process of auto-body, variations in the geometrical dimensions of sheet metal parts and fixtures are inevitable. These variations accumulate through the multi-station assembly process to form the dimensional variations of the final products. Compared with the assembly of rigid parts, the assembly process of the elastic parts is more complex because the variation accumulation patterns rely much on the variations of fixture, jointing methods and mechanical deformation. This paper aims at analyzing the variation transformation mechanism and accumulation characteristics for the assembly of sheet metal parts based on the analysis of dimensional coordination relations among parts and fixtures. Finite element method (FEM) and Monte-Carlo Simulation (MCS) were used to analyze the effect of jointing contact on variation transformation, while a state equation was developed to describe the variation accumulation mechanism. The result of the analysis indicates that the main characteristics of elastic assembly jointing are the overlap jointing methods and elastic contacts action. The fact that the variation transform coefficients (VTC) are variable makes the assembly variation distribution Non-Gaussian even if the dimension variation of parts is Gaussian distribution. The analysis conclusions have potential value for more reasonable tolerance synthesis of elastic parts assembly.

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The All-Aluminum Auto Body - A Study Based on the Porsche 928

10.4271/830094 ◽

1983 ◽

Cited By ~ 4

Author(s):

Hermann E. Burst ◽

Hans-Peter Bäuerle ◽

Wolfram F. Thull

Keyword(s):

Auto Body

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Redesign of a Complicated Component of Auto Body Based on the Properties of TWBs

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.97-101.3151 ◽

2010 ◽

Vol 97-101 ◽

pp. 3151-3160

Author(s):

Yu Ning ◽

Ying Chun Han ◽

Chun Yan Wang

Keyword(s):

Mechanical Properties ◽

Parametric Optimization ◽

Weld Line ◽

Mechanical Analysis ◽

Parent Metal ◽

Forming Technology ◽

Auto Body ◽

Weld Line Movement ◽

Welding Position ◽

Line Movement

With a synthetic study on the mechanical properties and deformability of TWBs, and an advanced mechanical analysis of weld-line movement, the theoretic basis for the whole forming and redesign of a complicated component of auto body (body side-inner panel) was achieved. Then a preliminary redesign was conducted with the selection and collocation of parent metal, the layout of the welding position, and the design of integral forming drawing taken into consideration. Thereafter, by simulation forming and parametric optimization, the redesign of the component was completed and its stamping forming technology was greatly improved.

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