Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : August 07, 2016 - August 10, 2016
In the MFBD (Multi-Flexible-Body Dynamics) [1], the contact analysis is very important. To develop the general purpose contact algorithm for rigid and flexible bodies, the Generalized Geometry Contact algorithm, which is called, ‘Geo Contact', has been developed by Choi's [2-4] for the contact problems between the rigid and flexible bodies with the general shaped geometries. But, in the previous researches, the nodal approach for flexible body was considered. The flexible body is actually classified as two types. The one is a nodal flexible body based on the Finite Element Method and the orther is a modal reduction flexible body. The modal reduction flexible body is widely used in the MFBD system for the efficient analysis for small deformation problems. In order to get a flexible body of modal reduction, the CMS(Component Mode Synthesis) analysis of Craig-Bampton's[5] is widely used. Therfore, in this study, we will expand the existing contact algorithm to the modal reduction flexible body. The schematic diagram in Figure 1 show what kind of improvement is needed to support the contact for the modal reduction flexible body in the previous Generalized Geometry Contact (Geo Contact) algorithm. We will show how to adapt and show the contact results of various contact cases with three types of body. The whole contact cases are six cases such as (1) rigid-rigid body, (2) rigid-nodal flexible body, (3) rigidmodal reduction flexible body, (4) nodal flexible-modal reduction flexible body, (5) nodal flexible-nodal flexible body, and (6) modal reduction flexible-modal reduction flexible body.
