Influence of boundary conditions on results of the finite‐element‐simulation

It is becoming increasingly apparent that the correct description of the boundary conditions of a forming process is of decisive importance for the computational accuracy of FEM results. The effects of various influencing variables on the computational accuracy of an FEM programme have been analysed at the IBF. The various influencing variables are discussed in relation to precise experimental findings and the results of analytical or other FEM solutions, and it is shown that uncritical use of FEM programmes can often lead to considerable inaccuracies. In addition, the limits of current continuum‐mechanics simulation are indicated and possible ways of extending those limits discussed.