A method for improving dynamic solutions in flexible multibody dynamics

✍ Scribed by Jeha Ryu; Ho-Soo Kim; Semyung Wang

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 438 KB
• Volume: 66
• Category: Article
• ISSN: 0045-7949
• DOI: 10.1016/s0045-7949(98)00010-8

✦ Synopsis

AbstractÐThis paper presents a method for improving dynamic solutions that are obtained from the dynamic simulation of ¯exible multibody systems. The mode-acceleration concept in linear structural dynamics is utilized in the proposed method for improving accuracy in the postprocessing stage. A theoretical explanation is made on why the proposed method improves the dynamic solutions in the context of the mode-acceleration method. A mode-acceleration equation for each ¯exible body is de®ned and the load term in the right hand side of the equation is represented as a combination of space-dependent and time-dependent terms so that ecient computation of dynamic solutions can be achieved. The load term is obtained from dynamic simulation of a ¯exible multibody system and a ®nite element method is used to compute dynamic solutions by quasi-static analyses. Numerical examples show the eectiveness of the proposed method.