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Research Papers

An Efficient Formulation for General-Purpose Multibody/Multiphysics Analysis

[+] Author and Article Information
Pierangelo Masarati

Associate Professor
Dipartimento di Scienze e Tecnologie
Aerospaziali,
Politecnico di Milano,
Milano 20156, Italy
e-mail: pierangelo.masarati@polimi.it

Marco Morandini

Assistant Professor
Dipartimento di Scienze e Tecnologie
Aerospaziali,
Politecnico di Milano,
Milano 20156, Italy
e-mail: marco.morandini@polimi.it

Paolo Mantegazza

Professor
Dipartimento di Scienze e Tecnologie
Aerospaziali,
Politecnico di Milano,
Milano 20156, Italy
e-mail: paolo.mantegazza@polimi.it

The modulus of the largest eigenvalue.

For a definition of differential index, see, for example, Ref. [22].

http://sourceforge.net/projects/blenderandmbdyn/, another example of the fruitful interaction with users granted by the free software development model.

1Corresponding author.

Contributed by the Design Engineering Division of ASME for publication in the Journal of Computational and Nonlinear Dynamics. Manuscript received May 31, 2013; final manuscript received October 3, 2013; published online July 11, 2014. Assoc. Editor: Javier Cuadrado.

J. Comput. Nonlinear Dynam 9(4), 041001 (Jul 11, 2014) (9 pages) Paper No: CND-13-1116; doi: 10.1115/1.4025628 History: Received May 31, 2013; Revised October 03, 2013

This paper presents a formulation for the efficient solution of general-purpose multibody/multiphysics problems. The core equations and details on structural dynamics and finite rotations handling are presented. The solution phases are illustrated. Highlights of the implementation are presented, and special features are discussed.

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References

Figures

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Solution call graph

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Fig. 7

Pseudocode of nonlinear problem iterative solution

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Fig. 4

Mesh (left) to multibody model (right) communication pattern for a typical flapping wing fluid-structure coupled simulation

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Fig. 3

Spectral radius of integration scheme

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Fig. 5

PA10-like robot performing prescribed nominal (top) and obstacle avoidance (bottom) trajectories

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Fig. 6

Helicopter pilot arm holding the collective control inceptor at 10, 50, and 90%

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