AbstractAn algorithm for the multi‐body‐dynamics is suggested, being based on the hybrid Newton‐Euler‐Lagrange method and on an implicit integration. The advantages of this method are: minimal expenditure of input data, numerical stability for relatively large steps of integration, high efficiency of the computer programs, inclusion of drive and control models. The software program CAE‐IR/1 was developed in cooperation of Institute of Mechanics of Academy of Sciences of GDR with Institute of Informatics and Automation of Academy of Science