The construction of complex objects, such as an aircraft, requires the creation of a dedicated industrial system. By industrial system, we mean all the material and immaterial means used to build the object (labor, machines, factories, etc.). Classically, this means of production is defined after that the design of the product. In other words, the specifications of the product are the requireme...

In recent years, considerable attention has been given to the analysis of flexible mechanisms. For mechanisms which operate at high speeds, the inertial forces become so large and they cannot be ignored and the mechanism members undergo considerable deformation. Under these situations the rigid body assumption is no longer valid and hence the need arises for consideration of the flexibilities o...

This paper presents the design, simulation, fabrication and characterization of a novel electromagnetic vibration energy harvester with sandwiched structure and air channel. It mainly consists of a top coil, a bottom coil, an NdFeB permanent magnet and a nickel planar spring integrated with silicon frame. The prototype is fabricated mainly using silicon micromachining and microelectroplating te...

Discussions on the controls initiating the onset of the phytoplankton spring bloom in particular in the North Atlantic have since Sverdrup been dominatedby the roleof physical andbiological drivers. Undoubtedly, these driversplayan important role inphytoplanktondynamics and thus the onset of the spring bloom. However, they neglect the cells ability to modify vital rates in response to changes i...

This paper proposes a new method for real-time rigid body simulations for haptic interactions based on a penalty method regarding contact volume. Analytical methods for calculation of contact forces require too much time to maintain fast update rates for haptic controls. In addition, they prohibit direct connection of haptic interfaces. Penalty methods, which employ spring-damper models for cal...

In this paper an original application of spring-mass based model to NURBS surface reconstruction from point clouds is described. In last few years spring-mass models have been largely and successfully applied in Computer Animation for cloth simulation, but their application has been limited to non-Engineering fields. Following the physical metaphor of laying a cloth over a non-structured set of...

ABS'I'KAC'I' A decade of observation in South San Francisco Bay demonstrates that estuarine phytoplankton biomass fluctuates at the time scale of days to weeks, and that much of this variability is associated with fluctuations in tidal energy. During the spring seasons of every year from 1980-1990, episodic blooms occurred in which phytoplankton biomass rose from a baseline of 2-4 mg chlorophyl...

The medical training systems based on virtual simulation are highly desired since minimally invasive surgical techniques have become popular to patients. The training system helps surgeon trainees to acquire, practice and evaluate their surgical skills, and the key component of such a system is to simulate the dynamic procedure such as 3D biological tissue deformation in surgical operation. In ...

In vascular interventional surgery, the virtual reality simulation is indispensable for catheter-based operation system because it provide the surgeon of visual scene between catheter and vascular. However, most VR systems only present the vascular geometry model which indicates vascular is a rigid object. So as to display the deformation of vascular, it is necessary to consider the vascular ph...

In this paper, the dynamic simulation for a high pressure regulator is performed to obtain the regulator behavior. To analyze the regulator performance, the equation of motion for inner parts, the continuity equation for diverse chambers and the equation for mass flow rate were derived. Because of nonlinearity and coupling, these equations are solved using numerical methods and the results are ...