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The arrival of new competitors and the continuous growth of the customer requirements, lead the OEM's to reduce the product development time; thus, the simulation tools available on the market became mandatory to the new products development in the automotive industry. However, to simulate a full connecting rod set is very time consuming. The goal of this work is to present the main simplifications that can be set on a connecting rod simulation using the Finite Elements Method (FEM) without jeopardizing the results accuracy. The main contribution of this study is to provide time optimization to the engineers and to avoid a wrong interpretation of the results according to the boundary conditions adopted on the simplified model.

The effective length of screwed fasteners, regarding its correlation between safety assembling and production issues, has always been an open question for designers of fastening system. This work presents a real case of dimensioning one wheel nut according to theoretical and practical tests in order to guarantee a safe assembling. The objective of this study is to validate the geometric dimensioning of metric threads and their applications under real conditions.