An efficient Generalized Geometry Contact algorithm including modal reduction flexible bodies
In the MFBD (Multi-Flexible-Body Dynamics) (RecurDyn, 2017), 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&apos...
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| Autores principales: | , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
The Japan Society of Mechanical Engineers
2017
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/080b333a4d694ae08e8cf9d424314f58 |
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| Sumario: | In the MFBD (Multi-Flexible-Body Dynamics) (RecurDyn, 2017), 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 (Choi et al., 2013), (Choi and Choi, 2012), (Choi, 2009) for the contact problems between the rigid and flexible bodies with the general shaped geometries. In the previous researches, the nodal approach for flexible body was considered. But, the flexible body is classified as two types. The one is a nodal flexible body based on the Finite Element Method and the other 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 (Craig and Bampton, 1965) is widely used. Therefore, in this study, we will expand the existing contact algorithm to the modal reduction flexible body. The node of the modal reduction flexible body can be deformed like as the nodal flexible body. Therefore, the contact algorithm is similar to the nodal flexible body. We made two interface functions in pre and post processing in the previous Generalized Geometry Contact (Geo Contact) algorithm in order to support the contact for the modal reduction flexible body. Consequentially, this method can be applied for various contact cases with three types of bodies. There are total six cases using three types of bodies such as (1) rigid-rigid body, (2) rigid-nodal flexible body, (3) rigid-modal 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. We will show that whole contact cases work well with Generalized Geometry Contact algorithm with some examples. |
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