One of the main limits on the design phase of new mechanical components is the limited integration between the Computer Aided Design (CAD) and the Computer Aided Engineering (CAE) phases [1,2]. At present the virtual validation phase, carried out using various methods like the Finite Element (FEM) and Multibody Analysis (MBS), wastes a lot of time on model meshing, simplifications and database transfers. In the past years some new so called meshless methodologies for the CAx phases integration have been improved. In this paper the feasibility of a new meshless methodology based on Spline geometry description is presented. Using this method it is possible to use directly the B-Spline CAD description to describe the physical behaviour of a general flexible body for all the CAE validation phases. Moreover this method, taking advantage from its continuous formulation, is able to solve some important already unsolved problems like the generalized interactions between flexible bodies in multibody analyses. In this paper the full method formulation is presented through curved beams implementation and examples.
New dual meshless flexible body methodology for multi-body dynamics: simulation of generalized moving loads
BRACCESI, Claudio;LANDI, LUCA;
2004
Abstract
One of the main limits on the design phase of new mechanical components is the limited integration between the Computer Aided Design (CAD) and the Computer Aided Engineering (CAE) phases [1,2]. At present the virtual validation phase, carried out using various methods like the Finite Element (FEM) and Multibody Analysis (MBS), wastes a lot of time on model meshing, simplifications and database transfers. In the past years some new so called meshless methodologies for the CAx phases integration have been improved. In this paper the feasibility of a new meshless methodology based on Spline geometry description is presented. Using this method it is possible to use directly the B-Spline CAD description to describe the physical behaviour of a general flexible body for all the CAE validation phases. Moreover this method, taking advantage from its continuous formulation, is able to solve some important already unsolved problems like the generalized interactions between flexible bodies in multibody analyses. In this paper the full method formulation is presented through curved beams implementation and examples.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
