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Keywords: bars
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Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. August 2010, 132(8): 081003.
Published Online: July 21, 2010
...Hafez Tari; Hai-Jun Su We study the synthesis of a slider-crank four-bar linkage whose coupler point traces a set of predefined task points. We report that there are at most 558 slider-crank four-bars in cognate pairs passing through any eight specified task points. The problem is formulated for up...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. May 2009, 131(5): 051004.
Published Online: April 3, 2009
... by the spring balancing designs of a general Stephenson-III type six-bar linkage and a Watt-I type six-bar linkage with parallel motion. 30 05 2008 06 01 2009 03 04 2009 bars couplings design engineering kinematics springs (mechanical) vectors static balance zero free-length...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. January 2009, 131(1): 011015.
Published Online: December 16, 2008
...Abdullah F. Al-Dwairi Planar drag-link mechanism is a Grashofian four-bar chain with the shortest link fixed. In practice, the mechanism is used as a coupling between two shafts to convert uniform rotation of the driving shaft into a nonuniform rotation of the driven shaft. The nonuniformity...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. January 2009, 131(1): 011009.
Published Online: December 15, 2008
... and six-bar closed chain linkage, and the spatial Tricept parallel mechanism, demonstrate the practical feasibility of our approach. The results of the planar case studies confirm the general intuitive practice of making the base links heavier and the distal links lighter, as a means of reducing...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. December 2008, 130(12): 122302.
Published Online: October 21, 2008
... mechanisms. In this way the desired force, stiffness, and motion can be achieved from a single piece of formed wire. Two techniques of integrating torsion springs are fabricated and modeled: helical coil torsion springs and torsion bars. Because the mechanisms are more complex than ordinary springs...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Mech. Des. October 2008, 130(10): 104501.
Published Online: August 21, 2008
...P. R. Ouyang; W. J. Zhang; M. M. Gupta A mechanical amplifier is an important device, which together with a piezoelectric actuator can achieve motion with high resolution and long range. In this paper, a new topology based on a symmetric five-bar structure for displacement amplification is proposed...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. August 2008, 130(8): 082303.
Published Online: July 11, 2008
... on the analysis of a single special loaded leaf segment, a pseudo-rigid-body four-bar model is proposed. The four-bar model is further simplified to a pin-joint model for some simple applications. The accuracy of both models is demonstrated by comparing results to those of nonlinear finite element analysis...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. April 2008, 130(4): 042303.
Published Online: February 28, 2008
... of the double butterfly linkage and of the single flier eight-bar linkage. Table that can be used to determine the secondary instant centers of the single flier eight-bar linkage and of all the mechanisms obtained by substituting either a prismatic pair or a rolling contact (when possible) for any revolute...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. January 2008, 130(1): 011006.
Published Online: December 7, 2007
...Theeraphong Wongratanaphisan; Matthew O. T. Cole This paper presents the analysis of a gravity compensated four-bar linkage mechanism with zero-free-length linear spring suspension. The objective of the study is to seek the possibility of employing the four-bar linkage or similar mechanisms...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. November 2006, 128(6): 1272–1284.
Published Online: January 9, 2006
...Bram Demeulenaere; Erwin Aertbeliën; Myriam Verschuure; Jan Swevers; Joris De Schutter This paper focuses on reducing the dynamic reactions (shaking force, shaking moment, and driving torque) of planar crank-rocker four-bars through counterweight addition. Determining the counterweight mass...
Topics: Optimization
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. November 2006, 128(6): 1261–1271.
Published Online: December 30, 2005
...W. Z. Guo; R. Du Single-loop N-bar linkages that contain one prismatic joint are common in engineering. This type of mechanism often requires complicated control and, hence, understanding its mobility is very important. This paper presents a systematic study on the mobility of this type...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. September 2007, 129(9): 941–948.
Published Online: October 20, 2005
...Ahmad Smaili; Nadim Diab A method for the synthesis of four-bar mechanisms to generate closed paths through shape optimization is herein introduced. The objective function is not based on Fourier descriptors, but rather on the cyclic angular deviation (CAD) vector associated with a set of desired...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. May 2006, 128(3): 542–550.
Published Online: July 29, 2005
... as a tool to construct the building blocks. The compliant four-bar building block and the compliant dyad building block are presented as base mechanisms for the conceptual design. It is found that it is always possible to obtain a solution for the geometric advantage problem with an appropriate combination...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. January 2006, 128(1): 151–158.
Published Online: July 19, 2005
...Charles W. Wampler This paper investigates the location of a rigid body such that N specified points of the body lie on N given planes in space. Variants of this problem arise in kinematics, metrology, and computer vision, including some, such as the motion of a spherical four-bar...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. January 2006, 128(1): 179–191.
Published Online: July 4, 2005
... spherical platforms inter-connected by rigid rods, are dual to a spherical six-bar linkage. The dual transformation, as presented in this paper, does not require the formulation and solution of the governing equations of the system under investigation. This is an original contribution to the literature...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. March 2006, 128(2): 430–435.
Published Online: June 23, 2005
...Shih -Hsi Tong This paper presents a new approach for the synthesis of high-stiffness five-bar and seven- bar linkage structures based on the concept of orthogonal paths. The intersection point of two orthogonal paths is the location of a floating joint at which the motion is prevented...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. March 2006, 128(2): 374–383.
Published Online: June 7, 2005
... of this paper is to demonstrate a novel method for generating each of the linkages from planar and Bennett chains. Alternative compositions are discussed, along with the family's potential for being fashioned into nests of linkages. 11 03 2005 07 06 2005 couplings structural engineering bars...
Topics: Chain, Linkages
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Mech. Des. March 2006, 128(2): 509–512.
Published Online: May 24, 2005
...Thomas R. Chase Graphical methods for synthesizing planar four-bar linkage motion generators to pass through two or three precision positions are well known. However, the practicality of these methods is limited by a high probability that the resulting linkages will suffer from kinematic defects...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. November 2005, 127(6): 1122–1128.
Published Online: March 14, 2005
...Pierre M. Larochelle; Agnes M. Agius This paper presents a methodology for generating and displaying the coupler surfaces of the spatial 4C mechanism. The 4C mechanism is a two-degree-of-freedom spatial four-bar linkage. The path traced by a point attached to the coupler or floating link defines...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. November 2005, 127(6): 1145–1151.
Published Online: February 14, 2005
...Gordon R. Pennock; Nihar N. Raje This paper presents a graphical technique to construct the coupler cognate linkages for the double flier eight-bar linkage. The technique is based on the skew pantograph construction which converts the double flier linkage into a second eight-bar linkage by applying...