Interactive project review of deformable parts through haptic interfaces in Virtual Reality

摘要: Physical prototypes are increasingly replaced by virtual in the industrial implementation of Product Lifecycle Management. The design evaluation an deformable mechanical part plays a crucial role term validating its functional properties. From point view, model formu- lated Finite Element Method is normally employed. However, employment not straightforward for real-time interactions, especially when haptic interfaces introduced into these deformation applications. Recently, pre-computation approach based on reduction method was commonly used to reduce computational loads. main goal this thesis extend toward validation parts investigate trade-off issue between accuracy and interaction performance. key idea conceive techniques treating off-line pre-computations on-line interactions. Particularly, we develop simulation framework proposing two-stage combining phase phase. During phase, compute spaces modal analy- sis. contribute modelling costless which suitable Furthermore, propose mesh analysis pre-compute regard- ing anticipated scenarios. A switch among different developed so that computations can focus degrees freedom where necessary. divide computation process two separate modules im- plemented threads ensure One module dedicated update task, implemented extracting sub-matrix from pre-computed matrix, while other visualization task. To verify proposed thesis, carry out experiments interacting with models increasing complexity. Experimental re- sults show our efficiently handle issue, as formulated finite element guarantees accuracy. And moreover, heavy large elastic systems occurred assure response