Techniques for accelerating B-rep based parallel machining simulation

On the Development of Virtual Reality Scenarios for Computer-Assisted Biomedical Applications

“…The constructive solid geometry (CSG) considers the modelling of solid objects using Boolean operations, which is useful for tasks requiring mathematical precision [ 27 , 28 ]. On the other hand, Boundary Representation (B-Rep) [ 29 ] connects vertices with lines to create faces, allowing the generation of complex geometries where the level of accuracy depends on the amount of elements in the mesh [ 27 , 28 ].…”

A solid model-based off-line adaptive controller for feed rate scheduling for milling process

“…The primary disadvantage of BRep modelers for machining simulation is long running time. Parallel processing and BRep topology to reduce overall wall clock running time of BRep based machining simulations for rough machining of the 2-1/2 D pockets has been reported in literature (Spence and Li, 2001;Fleisig and Spence, 2005). It was shown that, for a total of n tool movements, the BRep growth rate is estimated to be O(n 1.5 ).…”

“…parametric definition of two dimensional profile of cutter in terms of u h non parallel height of cutter h 1 shank length of cutter MRR material removal rate n number of tool paths N spindle rotating speed OP first straight line segment corresponding to the bottom cutting edge of cutter p (u, v) biparametric definition of the surface of the cutter P avg average power PQ fillet arc of cutter Based on the literature review (Anderson, 1978;Wang and Wang, 1986;Van Hook, 1986;Atherton et al, 1987;Jerard et al, 1990;CGTech, 2003;Chappel Ian, 1983;Oliver and Goodman, 1990a;Drysdale et al, 1989;Jerard et al, 1989;Sungertekin and Voelcker, 1986;Spence and Altinas, 1991;Spence and Altinas, 1994;Roth et al, 2003;Feng et al, 1995;Mounayri et al, 1998;Spence and Li, 2001;Fleisig and Spence, 2005;Wastra et al, 1994;Mortenson, 1985;Ayala et al, 1985;Carlbom et al, 1985;Brunet and Navazo, 1990;Chonglin et al, 1996;Kondo, 1994;Roy and Xu, 1999) the various approaches used for geometric NC simulation and verification can be classified into (i) Image space (ii) Vector based (iii) Object space based NC simulation. The Image space (also called as z-map) approach (Anderson, 1978;Wang and Wang, 1986;Van Hook, 1986;Atherton et al, 1987) is the most widely used for NC simulation.…”

Material Removal Simulation of Multi-axis NC Milling Based on Spatial Partitioning Level of Detail Model

“…NC simulation can be categorized into three major way, B-rep modeling [1], spatial partitioning modeling [2][3][4][5][6] and discrete vectors modeling [7].Simulation based on B-rep can represent machined workpiece explicitly. But in the process of simulation time and space complexity will be increasing rapidly.…”