In recent years, topology optimization has been used for optimizing members of flexible multibody systems to enhance their performance. Here, an extension to existing topology optimization schemes for flexible multibody systems is presented in which a more accurate model of revolute joints and bearing domains is included. This extension is of special interest since a connection between flexible members in a multibody system using revolute joints is seen in many applications. Moreover, the modeling accuracy of the bearing area is shown to be influential on the shape of the optimized structure. In this work, the flexible bodies are incorporated in the multibody simulation using the floating frame of reference formulation, and their elastic deformation is approximated using global shape functions calculated in the model order reduction analysis. The modeling of revolute joints using Hertzian contact law is incorporated in this framework by introducing a corrector load in the bearing model. Furthermore, an application example of a flexible multibody system with revolute joints is optimized for minimum value of compliance, and a comparative study of the optimization result is performed with an equivalent system which is modeled with nonlinear finite elements.
Modeling of Revolute Joints in Topology Optimization of Flexible Multibody Systems
Contributed by the Design Engineering Division of ASME for publication in the JOURNAL OF COMPUTATIONAL AND NONLINEAR DYNAMICS. Manuscript received April 11, 2016; final manuscript received June 23, 2016; published online September 9, 2016. Assoc. Editor: José L. Escalona.
- Views Icon Views
- Share Icon Share
- Cite Icon Cite
- Search Site
Moghadasi, A., Held, A., and Seifried, R. (September 9, 2016). "Modeling of Revolute Joints in Topology Optimization of Flexible Multibody Systems." ASME. J. Comput. Nonlinear Dynam. January 2017; 12(1): 011015. https://doi.org/10.1115/1.4034125
Download citation file:
- Ris (Zotero)
- Reference Manager