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This paper proposes a right-circle flexural hinge design for enlarging the displacement of bridge-type mechanisms as an alternative to the commonly used inner output type. The proposed design uses the outer side as the output so that it is suitable for some engineering applications with output force. Based on the elastic beam theory, a formula for the right-circle displacement amplification ratio...
In this paper, we design a micro gripper which is widely used in the microscopic world, using a flexible object with tens of micrometers in diameter as object studied. Different system structure models is established, and the optimal structure is explored in different materials and different structures. The mesh is added, the constraints are added, and the equivalent stress and equivalent deformation...
This paper describes a force sensor using metallic piezoresistive transducer for measuring the force originated by the physical interaction of the rigid body or arm incorporated autonomous vehicles in x, y and z co-ordinates [Fx, Fy and Fz]. It explains a theory, design and construction of single axis and multi-axis force/torque sensor. Here presents a novel idea for design a three degree of freedom...
The paper researches and designs a kind of rubber isolator to reduce the acting force of the power transmission system to the ship hull. And it analyzes the working principle of the propulsion system, and builds the dynamics analysis model to obtain the initial parameters of the power transmission system. The characteristics of the neoprene are described by the Mooney-Rivlin model, and the coefficients...
In this research, the body of a sheet hydroforming press, which can produce an industrial product, was designed and dimensioned. Initially, the required pressure and forces to produce the industrial product were determined by finite element analysis. Then, structural analysis of the press body was conducted by using these forces in Solidworks Premium simulation module. The strain gauges were bonded...
This study does not describe a success-story. Instead, it describes an exploratory process and the lessons learned while designing a compliant mechanism for a dynamic hand orthosis. Tools from engineering optimization and rapid prototyping techniques were used, with the goal to design a mechanism to compensate for hypertonic or contracted finger muscles. Results show that the mechanism did not reach...
The solar sail is a new type of spacecraft with high area-mass-ratio and large flexible structure, using solar radiation pressure (SRP) as the main method of spacecraft propulsion. The dynamical interactions among the attitude, the orbit and the vibration of the solar sail are the key challenges of the control system. The propose of this study which is carried out from the statics and dynamics perspective...
This study proposes a high dynamic range measurement method for a six-axis force sensor. The sensor used in this method is composed of high-rigidity and low-rigidity flexure elements. The low-rigidity flexure element is combined with an overload protection mechanism to prevent an overload in the measurement range of the high-rigidity flexure element. A high dynamic range measurement is achieved by...
In recent years, medical robotics has grown continuously beginning to be used in more new areas. Robots were designed with the ability of steering special needles especially for biopsy and brachytherapy procedures. In this paper is determined and analyzed the puncture force and tissues deformation during needle insertion in a robotic biopsy procedure. The experimental set-up used to determine tissue...
This study presents a method to use copper nodules to induce dielectrophoresis force. It can be applied in biomedical cell capture. The capture electrode is a 3D interdigitated microelectrode and also can be used in electrical cell impedance measurement. No additional procedural is needed to form copper nodules. The process is easy, convenient, and the same as a normal 3D electrode manufacture.
The human body represents the most important topic for many researchers. In our days, the science complexity demands the involvement of many resources and the coordinated team work of doctors, engineers, and other specialists. In the case of dental medicine, due to the nature of teeth material, their dimension and geometrical position, very important problems, like fractures, cannot be studied with...
This paper presents the results from a numerical study of the force characteristics of a DC solenoid actuator with three different shapes of the poles: a truncated cone, a cylindrical stepped shape and a flat shape. 3D computer models have been synthesized for the purpose in the software product ANSYS Maxwell, with the help of which the force characteristics at different supply voltages have been...
Fan-out wafer level packaging technology becomes more attractive and popular in the semiconductor packaging industry. The fan-out wafer level package (FOWLP) has the feature of integrating various devices in a tiny form factor. Since the FOWLP size is compact and small, its package strength is critical to its reliability. In this work, the three-point bending test method and finite element method...
The inherent advantages such as high robustness, low cost and high starting torque have made switched reluctance machine a strong candidate for electric vehicle applications. However, the serious vibration and acoustic noise are very troublesome. In this paper, a semi-analytical vibration prediction model is developed and an enhanced vibration reduction method is presented via random-varying turn-off...
Vertical stacking semiconductor devices can effectively integrate more functionality in the same footprint. Memory devices are often stacked in 8 and 16 die, and prototypes for up to 64 die have had proven concepts. For many of these devices, wire bonding on unsupported die edge in overhang configurations is required. Controlling the impact force, bonding parameters and lift off force profile are...
This paper presents the design and experimental validation of a soft pneumatic artificial muscle with position and force sensing capabilities. Conductive liquid-based soft sensors are embedded in a fiber-reinforced contractile actuator to measure two modes of deformation — axial strain and diametral expansion — which, together, are used to determine the stroke length and contractile force generated...
The cylinder is an important component of reciprocating compressor, and the pressure loss of the internal flow field influences directly the energy efficiency of the compressor. Based on CFD method, the dynamic mesh technology is used to simulate working processes of the cylinder in order to get P-V diagram and analyze influences of relevant parameters on the pressure loss. The analysis results show...
Numerical simulation results on the effect of corner arc (radius ‘r’) on the aerodynamic characteristics of a square section cylinder (side dimension, B) are presented in this paper. Simulation was carried out by using the commercial code ANSYS-Fluent at a Reynolds value of 2100 (based on B). Results show that as r/B ratio (CR) increases, coefficients of drag and lift decrease till CR = 0.2 further...
A FEM simulation of AFM indentation of soft biomaterials was made in ANSYS based on five-parameter hyperelastic Mooney Rivlin model. The simulation result shows that: The finite thickness film behavior is stiffer than the thicker film at larger indentations.
Rotary-linear switched reluctance motors (RLSRMs) are usually implemented in industry applications, such as boring mill, drill press and carving machines, etc [1].
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