Results 131 to 140 of about 28,904 (158)
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Design of Pitched and Curved Timber Diaphragms
Journal of the Structural Division, 1959Internal action of timber diaphragms; stresses caused by curving or sloping portions of diaphragm to conform to common truss shapes; illustrations showing magnitude of stresses for common shapes.
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Design of noncircular bevel gear with concave pitch curve
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2012Noncircular bevel gear can achieve variable transmission between intersecting axes. This article proposes the design method of high-order noncircular bevel gear with concave pitch curve. The parametric equations for driving and driven gear, addendum and dedendum surface under given transmission ratio and axis angle are established in a spherical polar ...
Kan Shi, Jiqiang Xia, Chunjie Wang
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Study on the Method of Expressing the Pitch Curve of Non-Circular Gear Based on NURBS Curve
Applied Mechanics and Materials, 2011In order to express the pitch curve of non-circular gear conveniently in a uniform way, which would lessen the complexity of calculating the tooth profile of non-circular gear, the authors propose a curve fitting method of NURBS curve with the least data points based on the fitting of NURBS curve.
Xiong Zhao +4 more
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Single-Source Financing: Pitching the Curve Ball
JAMA: The Journal of the American Medical Association, 1993To the Editor. —Dr Saltman1gives a curve-ball "pitch" for single-source financing of health care as "a solution for the United States." Even his "diasadvantages" reflect his strong bias ("requires political will to act boldly" and the like). I submit that any single-source financed and administered system of health care is doomed to disaster whether ...
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The Design of Quasi-Ellipsoidal Gear Ratio and Pitch Curved Surfaces
Journal of Mechanical Design, 1998The design of the gear ratio and pitch curved surfaces of a new type of gear called as quasi-ellipsoidal gear is presented in this paper. The quasi-ellipsoidal gear can be applied to the flexible wrist of a robot and will make the wrist light and nimble, so the transmission precision will be greatly improved.
Jiang Qimi, null Zhouji, Li Huamin
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Study on the pitch curve with minimal rotary inertia for the noncircular gears
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2017Aimed at the high load and slow response of the noncircular gears design, a general mathematical model for designing the pitch curve with minimal rotary inertia of the noncircular gear is proposed by resorting to kinematics principle and calculus of variations. To achieve the closure design, the constraint conditions and smoothness characteristics of N-
Xin Zhang, Shouwen Fan
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Influence of Worktable Errors on the Pascal Limacon Gear Pitch Curve
Recent Patents on Mechanical Engineering, 2019Background: More and more noncircular gears are reported in various relevant patents and papers. The Pascal limacon gear is one kind of noncircular gears and widely used in many mechanisms. The pitch curve is a key accuracy index for the noncircular gears and influenced by many errors, included worktable errors. Objective: The goal of this paper is
Yazhou Wang, Yongping Liu
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Deviation-Function Based Pitch Curve Modification for Conjugate Pair Design
Journal of Mechanical Design, 1999In this paper a method for generating new conjugate kinematic pairs is developed. This method, called the “Deviation-Function ” method, is to use deviation functions to reshape the original pitch pairs so that the desired profiles of generated pairs can be obtained.
D. C. H. Yang, S.-H. Tong, J. Lin
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B-Spline-Based Curve Fitting to Cam Pitch Curve Using Reinforcement Learning
Intelligent Automation & Soft Computing, 2023Zhiwei Lin +5 more
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Preliminary Analysis on Effect of Sleeper Pitch on Rail Corrugation at a Curved Track
2008This paper investigates the effect of sleeper pitch on the initiation and development of rail corrugation at a curved track when a railway vehicle passes through the curved track using a numerical method. The numerical method considers a combination of Kalker’s rolling contact theory with non-Hertzian form, a linear frictional work model and a dynamics
X. Jin, Z. Wen, Q. Liu, Z. Zhou
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