A new parallel numerical model for multiple collisions

Roberto Leon, Luis Salinas, Claudio Torres, Gonzalo Hernandez

Resultado de la investigación: Contribución a los tipos de informe/libroContribución a la conferencia

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
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

Conferencia

Conferencia1st Pan-American Congress on Computational Mechanics, PANACM 2015 and the 11th Argentine Congress on Computational Mechanics, MECOM 2015
PaísArgentina
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

Huella Profundice en los temas de investigación de 'A new parallel numerical model for multiple collisions'. En conjunto forman una huella única.

  • Citar esto

    Leon, R., Salinas, L., Torres, C., & Hernandez, G. (2015). A new parallel numerical model for multiple collisions. En PANACM 2015 - 1st Pan-American Congress on Computational Mechanics, in conjunction with the 11th Argentine Congress on Computational Mechanics, MECOM 2015 (pp. 963-971). International Center for Numerical Methods in Engineering.