Journal of Mechanical Design: Recent submissions
Now showing items 2981-3000 of 6182
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A Unified Approach to Solving Driving Forces in Spatial Parallel Manipulators With Less Than Six DOFs
(The American Society of Mechanical Engineers (ASME), 2007)A unified approach to solving driving forces in spatial parallel manipulators with less than six DOFs is proposed. First, the geometric constrained equations of the parallel manipulators are ... -
Design of a Novel Two Degree-of-Freedom Ankle-Foot Orthosis
(The American Society of Mechanical Engineers (ASME), 2007)An ankle-foot orthosis (AFO) is commonly used to help subjects with weakness of ankle dorsiflexor muscles due to peripheral or central nervous system disorders. Both these disorders are due to ... -
A Multiattribute Utility Theory-Based Method for Product Line Selection
(The American Society of Mechanical Engineers (ASME), 2007)This paper presents a method based on multiattribute utility theory (MAUT) that facilitates the selection of a product line. The method helps select the subset of products to manufacture based ... -
Unified Solving Jacobian∕Hessian Matrices of Some Parallel Manipulators With n SPS Active Legs and a Passive Constrained Leg
(The American Society of Mechanical Engineers (ASME), 2007)Some parallel manipulators with n spherical joint-prismatic joint-spherical joint (SPS)-type active legs and a passive constrained leg possess a larger capability of load bearing and are simple ... -
Dynamic Modeling of the Milner Continuously Variable Transmission—The Basic Kinematics
(The American Society of Mechanical Engineers (ASME), 2007)In the Milner continuously variable transmission altering the axial separation between two moveable halves of the outer race set allows the radial position of the planet balls to vary, along ... -
Improved Molecular Model of a Peptide Unit for Proteins
(The American Society of Mechanical Engineers (ASME), 2007)(1951, “ The Structure of Proteins: Two Hydrogen-Bonded Helical Configurations of the Polypeptide Chain,” Proc. Natl. Acad. Sci. U.S.A., 37(4), pp. 205–211) in their seminal paper in 1951 reported ... -
Power Efficiency of the Rotational-to-Linear Infinitely Variable Cobotic Transmission
(The American Society of Mechanical Engineers (ASME), 2007)Cobots are a class of robots that use infinitely variable transmissions to develop high fidelity programmable constraint surfaces. Cobots consume very little electrical power even when resisting ... -
Editorial November 2007
(The American Society of Mechanical Engineers (ASME), 2007)It is Fall, which means our project teams are trying to get organized. The blank look on the faces of our senior students forces me to remember that only months ago I was watching in ... -
Flank Modification Methodology for Face-Hobbing Hypoid Gears Based on Ease-Off Topography
(The American Society of Mechanical Engineers (ASME), 2007)The fundamental design of spiral bevel and hypoid gears is usually based on a local synthesis and a tooth contact analysis of the gear drive. Recently, however, several flank modification ... -
Optimizing Truck Cab Layout for Driver Accommodation
(The American Society of Mechanical Engineers (ASME), 2007)One important source of variability in the performance and success of products designed for use by people is the people themselves. In many cases, the acceptability of the design is affected ... -
Applying Multiobjective Cost and Weight Optimization to the Initial Design of Turbine Disks
(The American Society of Mechanical Engineers (ASME), 2007)Aerospace design optimization typically explores the effects of structural performance and aerodynamics on the geometry of a component. This paper presents a methodology to incorporate manufacturing ... -
A Network Approach to Define Modularity of Components in Complex Products
(The American Society of Mechanical Engineers (ASME), 2007)Modularity has been defined at the product and system levels. However, little effort has gone into defining and quantifying modularity at the component level. We consider complex products as a ... -
Degeneracy Study of the Forward Kinematics of Planar 3-RP̱R Parallel Manipulators
(The American Society of Mechanical Engineers (ASME), 2007)This paper investigates two situations in which the forward kinematics of planar 3-RP̱R parallel manipulators degenerates. These situations have not been addressed before. The first degeneracy ... -
Geometric Design for a Gerotor Pump With High Area Efficiency
(The American Society of Mechanical Engineers (ASME), 2007)This paper proposes a gerotor profile design based on the theory of gearing. Presented first is the curve of the outer rotor, whose conjugate profile is the inner rotor. Next, the analysis ... -
Constraint Wrench Formulation for Closed-Loop Systems Using Two-Level Recursions
(The American Society of Mechanical Engineers (ASME), 2007)In order to compute the constraint moments and forces, together referred here as wrenches, in closed-loop mechanical systems, it is necessary to formulate a dynamics problem in a suitable manner ... -
Study on the High-Sealing of Roots Rotor With Variable Trochoid Ratio
(The American Society of Mechanical Engineers (ASME), 2007)Vacuum pump plays an important role in the vacuum system. In this paper, a new method is proposed to design the Roots rotor that was the trochoidal curve with variable trochoid ratio. The ... -
A Parallelogram-Based Parallel Manipulator for Schönflies Motion
(The American Society of Mechanical Engineers (ASME), 2007)A parallelogram-based 4 degrees-of-freedom parallel manipulator is presented in this paper. The manipulator can generate the so-called Schönflies motion that allows the end effector to translate ... -
Design of Dissipative and Stable Assist Robots
(The American Society of Mechanical Engineers (ASME), 2007)This paper presents a methodology for design of dissipative assist robots with proven stability during set-point control. A dissipative assist robot is defined as one where the actuators ... -
Cartesian Parallel Manipulators With Pseudoplanar Limbs
(The American Society of Mechanical Engineers (ASME), 2007)Based on the Lie-group-algebraic properties of the displacement set, the three-degree-of-freedom (3DOF) pseudoplanar motion often termed Y motion for brevity is first introduced. Then, all possible ... -
A Single-Loop Approach for System Reliability-Based Design Optimization
(The American Society of Mechanical Engineers (ASME), 2007)An efficient approach for series system reliability-based design optimization (RBDO) is presented. The key idea is to apportion optimally the system reliability among the failure modes by considering ...