A new parallel numerical model for multiple collisions

Roberto Leon, Luis Salinas, Claudio Torres, Gonzalo Hernandez

Producción científica: Contribución a los tipos de informe/libroContribución a la conferenciarevisión exhaustiva

Resumen

The A-CD2 method [8] is used for numerical simulation in collisions of rigid bodies. This method solves a large scale constrained minimization problem in order to obtain the new velocities of each particle after a collision. The minimization problem is originally solved using the Uzawa method [6]. Unfortunately, the Uzawa method converges very slowly. In order to overcome this shortcoming, we propose a new numerical model that improves the previous approach in three ways: (i) the minimization problem is solved with a interior point method [10, 23] implemented in the CPLEX library [7], which converges in half of time required by the Uzawa method; (ii) the new model includes the rotational dynamics of the free moving rigid bodies between collisions; (iii) a parallel implementation of the updated velocities after collision is included. This new approach allow us to obtain numerical simulations with a large number of solids that was not possible before.

Idioma originalInglés
Título de la publicación alojadaPANACM 2015 - 1st Pan-American Congress on Computational Mechanics, in conjunction with the 11th Argentine Congress on Computational Mechanics, MECOM 2015
EditoresSergio R. Idelsohn, Sergio R. Idelsohn, Victorio Sonzogni, Alvaro Coutinho, Marcela Cruchaga, Adrian Lew, Miguel Cerrolaza
EditorialInternational Center for Numerical Methods in Engineering
Páginas963-971
Número de páginas9
ISBN (versión digital)9788494392825
EstadoPublicada - 1 abr. 2015
Evento1st Pan-American Congress on Computational Mechanics, PANACM 2015 and the 11th Argentine Congress on Computational Mechanics, MECOM 2015 - Buenos Aires, Argentina
Duración: 27 abr. 201529 abr. 2015

Serie de la publicación

NombrePANACM 2015 - 1st Pan-American Congress on Computational Mechanics, in conjunction with the 11th Argentine Congress on Computational Mechanics, MECOM 2015

Conferencia

Conferencia1st Pan-American Congress on Computational Mechanics, PANACM 2015 and the 11th Argentine Congress on Computational Mechanics, MECOM 2015
País/TerritorioArgentina
CiudadBuenos Aires
Período27/04/1529/04/15

Áreas temáticas de ASJC Scopus

  • Ingeniería civil y de estructuras
  • Mecánica de materiales
  • Teoría computacional y matemáticas
  • Matemática computacional

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