Haptics has the potential to be a powerful tool in computer-based education (CBE). More and more studies prove that it can an effective additive for face-to-face education, but most of traditional CBE systems are based on visualization techniques accomplish task. This paper describes multi-sensory virtual reality application students' education. The allows users learn about theories information appeared textbooks through exploration environment with haptics feedback. Evaluation from school...

This paper describes an innovative free-form modeling system, Virtual Clay Modeling System (VCMS), in which users can directly manipulate the shape of a virtual object like clay model real world. With this some disadvantages interaction with computer aided industry design (CAID) systems be resolved. In order to enhance immersion feelings and improve controlling abilities cut, paste, compensate VCMS, we use Spaceball 5000 PHANTOM Desktop assign set tasks. During process realizing 6...

For the last decade, remarkable progress has been made in field of cardiovascular disease treatment. However, these complex medical procedures require a combination rich experience and technical skills. In this paper, 3D virtual reality simulator for core skills training minimally invasive surgery is presented. The system can generate realistic vascular models segmented from patient datasets, including beating heart, provide real-time computation force feedback module surgical simulation....

A novel simulation method of the brush stroke is proposed by applying force feedback technology to virtual painting process. The relationship between and deformation analyzed, spring-mass model applied construct model, which can realistically simulate morphological changes according exerted on it. According at a sampling point, footprint paper calculated in real time. Then, obtained superimposing footprints along points, dynamic implemented. has been successfully system based technology. In...

A novel variable stiffness 3D virtual brush model and haptic decoration technique suitable for the surface of three-dimensional objects automobile industry are introduced based on real-time feedback mechanism using a 6 DOFs input device, behavior an expressive with is studied in detail first time. First, intrinsic between deformation real hair applied external forces (such as bending moment) analyzed by introducing spring to express basic mechanical brush. Based this model, many important...

In order to introduce force feedback effect virtual clay modeling system, a new model based on material removal rate is presented in this paper. According the and properties of material, proposed method can calculate sculpting haptic force. The not only proportional removed volume (Voxel volume), but also physical model's material. This well suitable for calculating with device, Phantom Desktop. Experiment results demonstrate that adopted add an effective haptics users be used widely...

Compared with the single direction depth element (DEXEL) model, three DEXEL model could express a shape more precisely. This paper gives dexelization algorithm of polyhedrons. transform polyhedron into its model. Under same space, by Boolean operations such as union, intersection, and subtraction, complex be produced. used in rapid prototyping simulation. The features are preserved well .Under Java2.0 Java 3D, these algorithms tested. A simulation example part is given.

Swept surface model of a drum cutter is established and discretized into uniformly distributed voxel by ray casting approach. Solid the stored in form three mutually perpendicular rays array along X, Y, Z axis, with each being originated from swept offset its neighboring one at distance size, resulting compressed dexel model. Boolean operation workpiece fulfilled among one-dimensional arrays high speed. Marching cube algorithm applied to build triangle mesh machined which can be observed...

A novel stroke simulation method of the Half-dry style Chinese calligraphy based on force feedback technology is proposed for virtual painting. Firstly, according to deformation brush when exerted it, footprint between and paper calculated. The complete obtained by superimposing footprints along painting direction, dynamic implemented. Then, we establish half-dry texture databases propose concept value researching main factors that affect effects stroke. In painting, mapped into in real time...

In the heat insulation winding molding process of solid rocket motors, pressure applied by press roller directly affects quality molding. Insufficient can result in poor bonding and may cause defects. This paper aims to provide an optimal design improve insulation. The effect cylindrical on distribution was analyzed using elastic foundation model a finite element (FE) model, which assessed Hertz theory. Subsequently, optimized elliptical concave design. radius analyzed. A comparison...

The acoustic pressure signal generated by blades is one of the key indicators for condition monitoring and fault diagnosis in field turbines. Generally, working conditions turbine are harsh, resulting a large amount interference noise measured signal. Therefore, denoising basis subsequent research. In this paper, method micro-turbine based on Complete Ensemble Empirical Mode Decomposition with Adaptive Noise (CEEMDAN) Variable step-size Normalized Least Mean Square (VSS-NLMS) algorithms...

Top-down design is an effective solution for global and local trade-off of color deigns process. Based on the characteristics computer-aided (CACD), we studied Ostwald Color Harmony theory realized a novel method with harmony by translation coordinate systems. Some key techniques, such as constructions product scheme database, mapping tree model Top-Down Design Model (TDCDM) are elaborated. Finally, integration CAXA solid software, implemented innovative design.

Munsell color model is a perfect expression system that can match well with the thinking law of designers. Implementation in computer greatly improve existing aid systems. The key techniques for visualization are accurate conversion from HVC to RGB model. Using neural network technologies, we analyzed data process dealing imprecision and discontinuities properties. On foundation analyzing traditional model, novel aided orienting imagery (CACMOIT), introduced this paper. Finally, it further...

Kurzfassung In der NC-Simulation werden hauptsächlich die räumlichen partitionierten Repräsentationen zur Darstellung des Werkstücks eingesetzt. Die Oberfläche simulierten wird nur diskret mit Sample-Punkten im 3D-Raum repräsentiert. Zwischen den ist keine Information über Werkstückoberfläche vorhanden. Um diesen Nachteil Methoden auszugleichen und auch NC-Simulationsergebnissen gerecht zu können, traditionell sehr kleinen geometrischen Elementen diskretisiert. Nachteilig daran jedoch, dass...

A novel variable stiffness model was proposed for analyzing elastic-plastic bending problems with arbitrary in detail. First, it assumed that the material of a rectangular beam is an ideal isotropic material, whose elastic modulus, yield strength, and section height are functions axial coordinates respectively. Considering effect shear on deformation beam, axially were studied. Then, analytical solutions derived when cross-section modulus varied by special function along length The analysis...