In recent decades, the automotive industry has had a constant evolution with consequent enhancement of products quality. industrial applications, quality may be defined as conformance to product specifications and repeatability manufacturing process. Moreover, in modern era Industry 4.0, research on technological innovation made real-time control process possible. Moving from above context, met...

In this paper, the deformation law of box-shaped parts drawing was analyzed, and mathematical expression for calculating critical fracture blank holder force (BHF) deduced. order to determine parameters 08Al sheet, notched specimen tensile tests were conducted, full-field strain specimens from obtained by digital image correlation (DIC) technology. The evolution stress triaxiality Lode paramete...

Abstract To improve the accuracy of forming simulations, advanced friction models are increasingly used in industry. These account for physical properties sheet, tool and lubrication describe tribological conditions during operation. One main influencing factors on tribology system, therefore coefficient, is surface roughness tools. Until now, it often assumed all tools have same uniform roughn...

Abstract In order to accurately predict and reduce the possible defects in stamping process of an aluminum alloy sheet, simulation data sheet thickness for 6016 were obtained by Hill’48 yield criterion based on finite element ABAQUS/Explicit solver. Taking blank holder force, friction coefficient, speed, die clearance as input parameters, radial basis function (RBF) network model predicting max...

To assess the suitability of different packaging steels for complex deep drawing applications, nowadays, total elongation and Lankford coefficients in simple tensile tests are used. However, use uniaxial is not supposed to predict limiting ratio precisely thus applications. At same time, conduction experiments extensive requires a high testing effort. Therefore, this work, correlation between f...

Large ellipsoid parts are prone to wrinkle when forming by using traditional stamping. Aiming solve the wrinkling problem in large parts, EMIF method with a variable blank holder is proposed this paper. The numerical simulation has shown that sheet material near is, as consequence of stamping, subjected circumferential compressive stress. When drawing height was 100 mm, metal notably wrinkled. ...

The countersinking process is affected by many factors including the tools and workpiece parameters. Some forming phenomena such as knife-edge affect quality of countersunk hole. Up to now, kinds research rely mainly on experiments which lead poor difficult control this process. In paper, a proposed numerical optimization developed obtain normalized This approach based response surface method (...

Nowadays, the Riv(et)-Bonding technique has become a major joining approach in automotive industry. It effectively incorporates benefits of adhesive bonding and self-pierce riveting (SPR), but overcomes their individual drawbacks. Finite element (FE) simulation SPR process now plays very important role during product design manufacture processes field. However, there is no reported progress Riv...

This study focuses on the effects of key process parameters during a modified hydrodynamic deep drawing utilizing combined floating and static die cavity (HDDC). A two-stage hydraulic loading path is recommended in novel process, each stage linear with an inflection point. The method to evaluate wrinkle forming dimension precision formed parts introduced at first. Then, influence as well blank ...