Development of geometry spot weld distribution model to improve efficiency of automotive body shop

Author(s):  
G. Selvam ◽  
Prince Arockia Doss Sebastian
Author(s):  
Noman Khandoker ◽  
Monir Takla ◽  
Thomas Ting

Simple spot weld connection models are desirable in huge and complicated finite element models of automotive body-in-white structures which generally contains thousands of spot weld joints. Hence, in this paper six different individual spot weld joint finite element models simplified in terms of their geometric and constitutive representations were developed including the one that is currently used in automotive industries. The stiffness characteristics of these developed models were compared with the experimental results obtained following a simple strategy to design the welded joint based on the desired mode of nugget pull out failure. It was found that the current spot weld modeling practice in automotive industry under predict the maximum joint strength nearly by 50% for different loading conditions. The computational costs incurred by the developed models in different loading conditions were also compared. Hence, a suitable model for spot welded joints is established which is very simple to develop but relatively cheap in terms of computational costs.


2015 ◽  
Vol 9 ◽  
pp. 3393-3408
Author(s):  
Sen Xu ◽  
Guan Wang ◽  
Yang Woo Shin ◽  
Dug Hee Moon

2014 ◽  
Vol 21 (3) ◽  
pp. 344-363 ◽  
Author(s):  
Raed El-Khalil

Purpose – The paper presents a benchmarking analysis that investigates the efficiency gap in relation to spot welding robots in automotive body shops at foreign and domestic companies in North America. The main purpose of this paper is to determine body shop efficiency improvement opportunities for the domestic companies or the Big Three, therefore reducing the competitive gap and improving business performance. Design/methodology/approach – The following paper is an extension of an earlier dissertation study conducted by EL-Khalil that focused on improving body shop overall efficiency. The Harbour Report was utilized to determine the best in class facilities that must be visited for benchmarking purposes. The data and information presented were obtained from the facilities visited through observations and interviews. The research utilized the corresponding facilities' labs in order to perform measurements and inspect product welding efficiency. The data obtained were a result of a two-year benchmarking study. Findings – The inspection results of spot welds applied on the door flange do not justify the utilization of additional spot welding arm designs and/or robots for the domestic companies. The data presented provide a good opportunity for improving business performance at the body shop Big Three facilities. In order to reduce the current competitive gap, decrease cost, and improve utilization, the Big Three must adopt new strategies (i.e. communization of specific vehicles parts). Research limitations/implications – The benchmarking study was limited to the aperture area. Researchers are encouraged to test the propositions further on different types of vehicles and different areas of the vehicle body. Practical implications – Based on the actual findings, this paper presents a case that impacts the improvements of the body shop overall performance in relation to reducing the number of spot welding arm and robot designs at the automotive industry in North America. Originality/value – The presented gap analysis on body shop spot welding efficiency for automotive companies in North America was not conducted previously. Therefore, the data can be utilized as a benchmark target to drive improvements at the domestic automotive body shops.


2021 ◽  
Vol 284 ◽  
pp. 125269
Author(s):  
Hanno Teiwes ◽  
Markus Rössinger ◽  
Mark Gonter ◽  
Christoph Herrmann ◽  
Sebastian Thiede

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