Browsing by Author "Kreuzer, Edwin"

Filter results by typing the first few letters
Now showing 1 - 3 of 3
  • Thumbnail Image
    ItemOpen Access
    CAD modeling, multibody system formalisms and visualization : an integrated approach
    (1993) Daberkow, Andreas; Kreuzer, Edwin; Leister, Günter; Schiehlen, Werner
    In this paper an integrated approach of CAD (Computer Aided Design) modeling, generation of equations of motion, simulation and visualization of multibody systems is described. An object-oriented data model for different multibody formalisms is integrated in a commercially available CAD-3D-system. With respect to existing CAD-interfaces, different solid model design methods and various visualization demands the datamodel allow, multi body modeling with a direct interface to a data base. Different software tools like an integrated Newton-Euler formalism are able to use immediately the parametrized multi body system data base. For multibody systems with closed kinematic loops a set of ordinary differential equations and decoupled algebraic equations is formulated automatically which can be solved with explicit multistep integration algorithms. This is achieved by a minimal set of generalized coordinates being specified during the numerical integration. A additional interface provides data for visualization from the simulation tool.
  • Thumbnail Image
    ItemOpen Access
    Local and global stability of a piecewise linear oscillator
    (1992) Kleczka, Michael; Kreuzer, Edwin; Schiehlen, Werner
    Machines and mechanisms with moving parts, subjected to periodic excitation, often show unexpected dynamic behaviour, and impacts due to their connection clearances may occur. The most simple mathematical model is a one degree-of-freedom nonlinear oscillator governed by a piecewise linear symmetric function to describe the restoring force. The systems response, which can be quite rich and complicated, is described in detail. Modern methods for a combined analytical and numerical analysis are used to study local and global bifurcation conditions, coexisting solutions and their associated domains of attraction.
  • Thumbnail Image
    ItemOpen Access
    The software NEWEUL
    (1993) Leister, Günter; Kreuzer, Edwin; Schiehlen, Werner
    The software package NEWEUL is delivered in source code along with user's manuals. Also, a collection of test examples of various fields of application is provided which makes it easy to get started and demonstrates many of the features of NEWEUL.