Robotic fixtureless assembly of sheet metal parts using dynamic finite element models: modelling and simulation

2002 ◽  
Author(s):  
J.K. Mills ◽  
J.G.-L. Ing
Keyword(s):  
Finite Element ◽  
Sheet Metal ◽  
Modelling And Simulation ◽  
Finite Element Models ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Dynamic Finite Element

scholarly journals Calculating the gravity-free shape of sheet metal parts

2021 ◽  
Author(s):  
Felix Claus ◽  
Hans Hagen ◽  
Bernd Hamann
Keyword(s):  
Experimental Data ◽  
Finite Element ◽  
Sheet Metal ◽  
Optical Measurement ◽  
Aerospace Industry ◽  
Normal Direction ◽  
Cad Model ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Stress Free State

AbstractThis paper presents an iterative finite element (FE)–based method to calculate the gravity-free shape of nonrigid parts from an optical measurement performed on a non-over-constrained fixture. Measuring these kinds of parts in a stress-free state is almost impossible because deflections caused by their weight occur. To solve this problem, a simulation model of the measurement is created using available methods of reverse engineering. Then, an iterative algorithm calculates the gravity-free shape. The approach does not require a CAD model of the measured part, implying the whole part can be fully scanned. The application of this method mainly addresses thin, unstable sheet metal parts, like those commonly used in the automotive or aerospace industry. To show the performance of the proposed method, validations with simulation and experimental data are presented. The shown results meet the predefined quality goal to predict shapes within a tolerance of ± 0.05 mm measured in surface normal direction.

Affordable structural optimization for large-size dynamic finite element models

1997 ◽  
Author(s):  
Francois Hemez ◽  
Emmanuel Pagnacco ◽  
Francois Hemez ◽  
Emmanuel Pagnacco
Keyword(s):  
Finite Element ◽  
Structural Optimization ◽  
Finite Element Models ◽  
Dynamic Finite Element ◽  
Large Size

Experimental and Numerical Analysis of Blanking for Thin Sheet Metal Parts

2001 ◽  
Vol 4 (3-4) ◽  
pp. 319-333
Author(s):  
Vincent Lemiale ◽  
Philippe Picart ◽  
Sébastien Meunier
Keyword(s):  
Numerical Analysis ◽  
Sheet Metal ◽  
Thin Sheet ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Thin Sheet Metal
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