Stress recovery with Krylov-subspaces in reduced elastic multibody systems

被引：0
|
作者：
Christoph Tobias
Peter Eberhard
机构：
[1] University of Stuttgart,Institute of Engineering and Computational Mechanics
来源：
Multibody System Dynamics | 2011年 / 25卷
关键词：
Reduced elastic multibody systems; SID file; Stress recovery; Stress modes; Krylov-subspaces;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A method for the recovery of stresses in reduced elastic multibody systems is presented. Elastic coordinates of a flexible body belonging to a reduced elastic multibody system are therefore premultiplied with a matrix of shape functions for stresses. Whereas the classic procedures for stress recovery in elastic multibody systems use shape functions for stresses that belong to eigenmodes and particular modes, this work also investigates shape functions for stresses that are derived from a Krylov-subspace projection. The presented method for stress recovery is implemented in a process chain containing different software tools and allows the evaluation of stresses during the runtime of the elastic multibody simulation. Accordingly, the performance of the developed process is examined with the help of a simple example. Results show that the usage of shape functions for stresses that are derived from a Krylov-subspace projection can improve the approximation of stresses in a user-defined frequency range.
引用
收藏
页码：377 / 393
页数：16
相关论文
共 50 条
  • [41] A Procedure for Shape Optimization of Controlled Elastic Multibody Systems
    Held, A.
    Seifried, R.
    PROCEEDINGS OF THE SEVENTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY, 2010, 94
  • [42] A PARAMETRIC STUDY ON THE DESIGN OF MULTIBODY SYSTEMS WITH ELASTIC MEMBERS
    LIOU, FW
    LIU, JD
    MECHANISM AND MACHINE THEORY, 1994, 29 (08) : 1219 - 1231
  • [43] Spatial formulation of elastic multibody systems with impulsive constraints
    Khulief, YA
    MULTIBODY SYSTEM DYNAMICS, 2000, 4 (04) : 383 - 406
  • [44] Krylov subspaces recycling based model order reduction for acoustic BEM systems and an error estimator
    Panagiotopoulos, Dionysios
    Deckers, Elke
    Desmet, Wim
    COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, 2020, 359
  • [45] A MODEL-ORDER REDUCTION METHOD BASED ON KRYLOV SUBSPACES FOR MIMO BILINEAR DYNAMICAL SYSTEMS
    Lin, Yiqin
    Bao, Liang
    Wei, Yimin
    JOURNAL OF APPLIED MATHEMATICS AND COMPUTING, 2007, 25 (1-2) : 293 - 304
  • [46] Finite Element Method Used in the Multibody Systems With Elastic Elements
    Vlase, Sorin
    Teodorescu-Draghicescu, Horatiu
    PROCEEDINGS OF THE 4TH IASME/WSEAS INTERNATIONAL CONFERENCE ON CONTINUUM MECHANICS: RECENT ADVANCES IN CONTINUUM MECHANICS, 2009, : 162 - 167
  • [47] Modified Coordinates in Dynamics Simulation of Multibody Systems with Elastic Bodies
    Zahariev, Evtim, V
    ADVANCED COMPUTING IN INDUSTRIAL MATHEMATICS, 2018, 728 : 217 - 227
  • [48] Multibody dynamics modeling of submerged cable systems with elastic segments
    He, Manli
    Wang, Shuxin
    Li, Xiaoping
    Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Vol 6, Pts A-C, 2005, : 1875 - 1883
  • [49] Rigid and elastic approaches for the modeling of collisions with friction in multibody systems
    Z Angew Math Mech ZAMM, suppl 5 (243):
  • [50] CONTINUOUS DISCRETE MODELING AND ANALYSIS OF ELASTIC PLANAR MULTIBODY SYSTEMS
    BOUTAGHOU, ZE
    TAMMA, KK
    ERDMAN, AG
    COMPUTERS & STRUCTURES, 1991, 38 (5-6) : 605 - 613
12345