Finite Element Simulation Of Springback In Sheet Metal Forming

Although finite element analysis fea is successful in simulating complex industrial sheet forming operations the accurate and reliable application of this technique to springback has not been widely demonstrated.

Finite element simulation of springback in sheet metal forming.

This paper describes new techniques for the sheet metal forming simulation using a local interpolation for tool surfaces proposed by nagata simple local interpolation of surfaces using normal vectors. A uniform mesh consisting of 150 plane stress elements for r 9 5 mm and five integration points through the thickness fig. Modern automotive concepts demand a weight reduction by using high strength materials and excellent crash performance which requires innovative simulation techniques. Bending of sheet metal is one of the widely used industrial processes especially in the automobile and aircraft industries.

Finite element analysis fea is the most common method of simulating sheet metal forming operations to determine whether a proposed design will produce parts free of defects such as fracture or wrinkling. Most sheet metals undergo a combination of bending stretching unbending and reverse bending during the forming process accurate estimation of spring back in these industries is important demands in bend angles can be within a narrow range. Springback can be defined as an elastically driven change of shape of the deformed part upon removal of external loads. The simulation process can be divided.

Today the metal forming industry is making increasing use of simulation to evaluate the performing of dies processes and blanks prior to building try out tooling. Fe finite element simulation of sheet metal forming is an important means to reduce the number of experiments and optimize the process 15 16 17 18. This phenomenon results in a deviation of the real product geometry from that defined in the design. Sheet metal forming is widely used in automotive aviation packaging and household goods.

The first simulations used numerical parameters typical of those in forming analysis. Proceedings of the eccomas 2000 complas vi european congress on computational methods in applied sciences and engineering barcelona spain 2000 cd rom. Collard numerical simulation of springback in sheet metal forming. Enjoy the videos and music you love upload original content and share it all with friends family and the world on youtube.

Several physical parameters as well as numerical influence this phenomenon and its numerical prediction. It is most popular for the manifold technical feasibilities in manufacturing high precision mass production and short processing time.