CAE Predictions for Cardan Joint Induced Driveline NVH

2017 ◽  
Author(s):  
Jack S.P. Liu ◽  
Natalie Remisoski ◽  
Javed Iqbal ◽  
Robert Egenolf
Keyword(s):  
Cardan Joint

scholarly journals FATIGUE ASSESSMENT OF UNIVERSAL CARDAN JOINT BASED ON LABORATORY SPECIMEN TESTS

2017 ◽  
Author(s):  
Pietro Palma ◽  
Gianni Tiussi ◽  
Andrea Donadon ◽  
Yuri Raffaglio ◽  
Andrea De Luca ◽  
...  
Keyword(s):  
Fatigue Assessment ◽  
Cardan Joint ◽  
Laboratory Specimen

Kinematic Displacement Analysis of a Double-Cardan-Joint Driveline

1987 ◽  
Author(s):  
I. S. Fischer ◽  
R. N. Paul
Keyword(s):  
Phase Angle ◽  
Relative Phase ◽  
Front Wheel ◽  
Constant Input ◽  
Computer Data ◽  
Output Displacement ◽  
Wheel Drive ◽  
In Series ◽  
The Difference ◽  
Cardan Joint

Abstract The input-output displacement relations of two Cardan joints arranged in series on a driveline has been investigated in detail, including the effects of unequal joints angles, the phase angle between the two Cardan joints and also such manufacturing tolerance errors as non-rigth angle link lengths and offset joint axes. A combined Newton-Raphson and Davidson-Fletcher-Powell optimization algorithm using dual-number coordinate-transformation matrices was employed to perform the analysis. An experiment was conducted to validate the results of the analysis. The apparatus consisted of a double-Cardan-joint driveline whose rotations were measured by optical shaft encoders that were sampled by a computer data-acquisition system. The equipment was arranged so that the phase angle between the joints and the offset angles between the shafts at each of the two joints could be readily varied. The “relative phase angle”, the difference between the phase angle of the two joints and the angle between the planes defined by the input and intermediate and the intermediate and output shafts, was found to be the significant factor. If the offset angles at both Cardan joints are equal, the double-Cardan-joint driveline function as a constant-velocity coupling when the magnitude of the relative phase angle is zero. If the offset angles at the two Cardan joints are unequal, a condition prevailing in the important front-wheel-drive automobile steering column, then fluctuation in output velocity for a constant input velocity is minimized although not eliminated for zero relative phase angle.

Compliant Cardan Universal Joint

2012 ◽  
Vol 134 (2) ◽  
Author(s):  
Engin Tanık ◽  
Volkan Parlaktaş
Keyword(s):  
Universal Joint ◽  
Original Design ◽  
Element Analysis ◽  
Theoretical Approaches ◽  
Torque Transmission ◽  
Single Piece ◽  
Transmission Capability ◽  
Flexural Hinges ◽  
Planar Materials ◽  
Cardan Joint

In this study, a compliant version of the Cardan universal joint is introduced. The original design consists of two identical parts assembled at right angle with respect to each other. The single piece part can be produced from planar materials; thus, it has the advantage of easiness in manufacturing. Dimensions of the mechanism are devised in order to satisfy the Cardan joint theory and to avoid an undesired contact between the identical parts. As a design example, a mechanism is dimensioned. The resultant stresses at flexural hinges of this sample are determined via finite element analysis method and torque transmission capability of this mechanism is determined. Further, this sample is manufactured and operated under a considerable output loading. Therefore, robustness of the compliant Cardan joint is verified with this prototype. As well, it is verified that the results of experiments are consistent with the theoretical approaches.

Girolamo Cardano

2017 ◽  
Author(s):  
Marialuisa Baldi
Keyword(s):  
General Public ◽  
Human Knowledge ◽  
Philosophy Of Nature ◽  
New Science ◽  
The Enlightenment ◽  
Complex Image ◽  
Counter Reformation ◽  
Cardan Joint ◽  
Humanistic Tradition

Cardano (Girolamo, Gerolamo, b. 1501–d. 1576) is an Italian polymath, one of the most prominent authors of the Renaissance. He was not only a physician, mathematician, and astrologer but also a philosopher and a curious researcher of nature, interested in all areas of human knowledge and experience. At the end of his life, he was brought to trial by the Catholic Inquisition, and all his works, except the medical ones, were condemned. Yet his writings in the philosophy of nature, especially the encyclopedic De subtilitate and De rerum varietate, were frequently read until the Enlightenment. For the general public, his name is renowned for some inventions and discoveries as the solution of cubic equations. What we call Cardan joint is named after him. His fascinating autobiography has been translated in many languages. Scholars read him as a radical thinker, crypto-Reformer critic of religions, and a forerunner of the new science still immersed in magic. A more complex image of Cardano has now been emerging, thanks to recent editions and translations of his works. Cardano sensed the crisis of the humanistic tradition in the age of the Counter-Reformation. As then, he still offers tools for understanding what is continuously transforming, and getting closer to the truth.

Internal Force and Moment Transmission in a Cardan Joint With Manufacturing Tolerances

1984 ◽  
Vol 106 (3) ◽  
pp. 301-311 ◽  
Author(s):  
I. S. Fischer ◽  
F. Freudenstein
Keyword(s):  
Internal Force ◽  
Design Stage ◽  
Force Transmission ◽  
Displacement Analysis ◽  
Joint Forces ◽  
Torque Transmission ◽  
Torque Analysis ◽  
Manufacturing Tolerances ◽  
Force Components ◽  
Cardan Joint

The literature on the internal forces in Cardan joints, which is sparse, tacitly assumes the vanishing of certain force components. For a joint of ideal proportions the torque transmission has been analyzed, but the force transmission has been only partially developed. In this investigation the displacement analysis and static force and torque analysis of a Cardan joint with manufacturing tolerances has been derived. The forces have been shown to be statically indeterminate by a degree of three. An experiment was undertaken to check on the validity of the assumed vanishing of the abovementioned force components. For the particular joint tests this assumption was not valid. Based on the displacement analysis, which includes the axial sliding at the joints in the presence of manufacturing errors, optimum tolerances can be determined in the design stage. Further experimentation is recommended in order to determine representative magnitudes of the abovementioned axial joint forces in joints of varying constructions and sizes. Together with the static analysis which has been developed in this investigation this will permit the sizing of universal joints in the design stage.

Inertia Effects in Cardan-Joint Operation

1996 ◽  
Author(s):  
Ian S. Fischer
Keyword(s):  
Dynamic Force ◽  
Universal Joint ◽  
Joint Operation ◽  
Inertia Effects ◽  
Dual Number ◽  
Cardan Joint

Abstract The inertia effects occurring in a Cardan-type universal joint operated at speed are considered in the calculation of dynamic force and torque reactions. A dual-number formulation has been used so that manufacturing and installation tolerances can be considered.

Nonlinear numerical and experimental study on the second-order torsional and lateral vibration of driveline system connected by cardan joint

2019 ◽  
Vol 26 (7-8) ◽  
pp. 540-551
Author(s):  
Yuanfeng Xia ◽  
Jian Pang ◽  
Liang Yang ◽  
Qin Zhao ◽  
Xianwu Yang
Keyword(s):  
Degrees Of Freedom ◽  
Second Order ◽  
Nonlinear Dynamic Model ◽  
Vehicle Interior ◽  
Intersection Angle ◽  
Coupling Vibration ◽  
Order Tracking ◽  
Wheel Drive ◽  
Four Wheel Drive ◽  
Cardan Joint

In this article, a nonlinear dynamic model with five degrees-of-freedom for a four-wheel-drive vehicle driveline connected by a cardan joint, including dynamic intersection angle, nonconstant velocity, and additional moment caused by the cardan joint, is established by using the Lagrange method to analyze the driveline coupling vibration in both torsional and lateral directions. High-order Runge–Kutta algorithm is applied to solve the differential equations and to calculate transient responses of the driveline rotors under acceleration condition. The color maps and second-order vibration of the driveline are acquired by frequency spectrum analysis and order tracking analysis, respectively. The second-order vibration and noise of the driveline and vehicle interior caused by the cardan joint is validated by vehicle experimental results and reduced effectively by decreasing intersection angle of the cardan joint under the operational condition. Moreover, application of a flexible coupling instead of the cardan joint significantly reduces the second-order vibration but simultaneously generates low-level third-order vibration.

Model for the Motion of Misaligned Shafts with Elastic Plate Coupling

2016 ◽  
Vol 823 ◽  
pp. 65-70
Author(s):  
Hariton Poparad
Keyword(s):  
Elastic Plate ◽  
Elastic Structure ◽  
Elastic Plates ◽  
Flexible Coupling ◽  
Analytical Results ◽  
Plate Coupling ◽  
Mathcad Software ◽  
Cardan Joint ◽  
Novel Model

Using the MathCAD software, this publication aims to develop a novel model to interpret the analytical results for an elastic structure as a substitute to flexible coupling between two misaligned axes. This model is used for the analysis of the motion of two deformed components comprising of the cardan joint, as well as the coupling with elastic plates.

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