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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2015, Vol. 36 ›› Issue (10): 3316-3326.doi: 10.7527/S1000-6893.2015.0201

• Solid Mechanics and Vehicle Conceptual Design • Previous Articles     Next Articles

Modelling method and application of solid beam element based on absolute nodal coordinate formulation

MA Chao, WEI Cheng, ZHAO Yang, WANG Ran   

  1. Department of Aerospace Engineering, Harbin Institute of Technology, Harbin 150001, China
  • Received:2014-09-28 Revised:2015-07-16 Online:2015-10-15 Published:2015-07-21
  • Supported by:

    National Basic Research Program of China (2013CB733004); National Key Discipline Laboratory Open Fundation (HIT.KLOF.MST.201508); Natural Scientific Research Innovation Foundation in Harbin Institute of Technology (HIF.NSRIF.201515)

Abstract:

In the multibody system dynamics formulations, the modeling of classical non-isoparametric beam element is mainly based on the Euler-Bernoulli and Timoshenko beam theories, which cannot accurately describe the deformation of the beam cross section. Although the absolute node coordinate formulation beam element is able to achieve section description, it is necessary to introduce additional description frames and deal with series locking problems. Different from the elements mentioned above, the absolute nodal coordinate formulation solid element directly describes the section deformation through the node coordinates without the locking problems. Based on the solid element, the absolute nodal coordinate solid beam element considering the continuity condition and internal viscoelastic damping, has been provided and achieved for the first time. With the solid beam element, the modelling of a multibody system is realized. According to numerical simulations, it is able to obtain some nonlinearity results with solid beam element and the precision is much higher than traditional finite element and absolute nodal coordinate formulation element.

Key words: multibody system dynamics, absolute nodal coordinate formulation, continuity condition, geometric nonlinearity, internal damping model

CLC Number: