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In this paper, an improved unified SPH(smoothed particle hydrodynamics) method is proposed to realize the realtime haptic rendering with hybrid environment which contains fluid, rigid body and so on. Firstly, the SPH method for fluid is reviewed briefly. Then the improved unified SPH model is proposed as the objects model to perform the collision detection and calculate the feedback force. The following...
It is a challenging problem to achieve six degree-of-freedom (DoF) haptic simulation of subtle force feelings caused by contacts at sharp geometric features in multi-region contact scenarios. We design a novel sphere-tree model for objects with sharp features and use a configuration-based optimization method to compute feedback force and torque. Given a triangle mesh of an object, a sphere-tree model...
Subtle force feelings caused by contacts at sharp geometric features are necessary to achieve high-fidelity haptic rendering. It is a challenging problem to achieve six degree-of-freedom (6-DOF) haptic simulation with sharp features for multi-region contacts scenario. We propose a configuration-based optimization method using a hybrid sphere-tree model to compute constraint-based collision response...
Starting notch geometry parameters are key factors affecting fracture splitting quality. As usually used materials in engine crankshaft bearing block, both gray Cast Iron HT150 and ductile iron QT500-7 are selected in this paper. The influence of starting notch geometry parameters on separation force are analyzed by using ABAQUS software. To reduce the separation force in fracture splitting process...
In the data integration, the heterogeneity of sources leads to missing value and various expressions of the same value in records, which reduces the quality of data. In this paper, we propose a novel approach to reinforce records for the integrated data. By studying the functional dependency of attribute in schema of data integration, we discover the related attribute that determines the attribute...
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