Articles | Volume 13, issue 2
https://doi.org/10.5194/ms-13-991-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ms-13-991-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
28 Nov 2022
Research article |
| 28 Nov 2022
| 28 Nov 2022
Instability load analysis of a telescopic boom for an all-terrain crane
Jinshuai Xu
Department of Engineering Mechanic, Dalian University of Technology, Dalian 116023, China
Yingpeng Zhuo
Department of Engineering Mechanic, Dalian University of Technology, Dalian 116023, China
Department of Engineering Mechanic, Dalian University of Technology, Dalian 116023, China
Gang Wang
School of Ocean Science and Technology, Dalian University of
Technology, Panjin 124221, China
Tianjiao Zhao
Department of Engineering Mechanic, Dalian University of Technology, Dalian 116023, China
Tianyu Wang
Department of Engineering Mechanic, Dalian University of Technology, Dalian 116023, China
Related subject area
Subject: Mechanisms and Robotics | Techniques and Approaches: Numerical Modeling and Analysis
Tooth profile design of a novel helical gear mechanism with improved geometry for a parallel shaft transmission
Kinematics and control of a cable-driven snake-like manipulator for underwater application
A 2 degrees of freedom united propulsive mechanism for amphibious function inspired by frog's hindlimb
Dynamic characteristics of the gear-rotor system in compressed air energy storage considering friction effects
Denim-fabric-polishing robot size optimization based on global spatial dexterity
A general method for the determination of the instantaneous screw axes of one-degree-of-freedom spatial mechanisms
Mechanism design and parameter optimization of a new asymmetric translational parallel manipulator
Influence of grinding wheel parameters on the meshing performance of toroidal surface enveloping conical worm drive
A new manual wheelchair propulsion system with self-locking capability on ramps
The nonlinear vibrations of orthogonal mechanism of vibrating table in view of friction
Location of unbalance mass and supporting bearing for different type of balance shaft module
Toward force detection of a cable-driven micromanipulator for a surgical robot based on disturbance observer
Inverse dynamics and trajectory tracking control of a new six degrees of freedom spatial 3-RPRS parallel manipulator
Design and analysis of a 3-DOF planar micromanipulation stage with large rotational displacement for micromanipulation system
Research on a Hierarchical and Simultaneous Gravity Unloading Method for Antenna Pointing Mechanism
Guaranteed detection of the singularities of 3R robotic manipulators
On the infinitely-stable rotational mechanism using the off-axis rotation of a bistable translational mechanism
Dimensional synthesis of mechanical linkages using artificial neural networks and Fourier descriptors
On the positioning error of a 2-DOF spherical parallel wrist with flexible links and joints – an FEM approach
New empirical stiffness equations for corner-filleted flexure hinges
CHRONO: a parallel multi-physics library for rigid-body, flexible-body, and fluid dynamics
Enyi He and Shihao Yin
Mech. Sci., 13, 1011–1018, https://doi.org/10.5194/ms-13-1011-2022, https://doi.org/10.5194/ms-13-1011-2022, 2022
Short summary
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A novel helical gear mechanism with improved geometry is proposed to reduce transmission errors. For the novel spiral gear mechanism with improved geometry, the maximal contact stresses change more smoothly and have a stronger bearing capacity. The results show that, under the same conditions, the gear in this paper improves the transmission accuracy, and the bearing capacity is also stronger.
Fufeng Xue and Zhimin Fan
Mech. Sci., 13, 495–504, https://doi.org/10.5194/ms-13-495-2022, https://doi.org/10.5194/ms-13-495-2022, 2022
Short summary
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To date, most underwater manipulators have been rigid-link structures with a small number of degrees of freedom and have been unable to perform well in confined spaces. Due to their high dexterity and good adaptability to different environments, snake-like manipulators have strong potential for use in complex underwater applications. In this study, a tip-following algorithm is presented to weave through confined and hazardous spaces along a defined path with high efficiency.
Yucheng Tang, Xiaolong Yang, Xiaojin Zhu, Shichao Zhou, Wenbin Zha, Yuxin Sun, and Yulin Wang
Mech. Sci., 13, 437–448, https://doi.org/10.5194/ms-13-437-2022, https://doi.org/10.5194/ms-13-437-2022, 2022
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This paper presents a novel united propulsive mechanism inspired by the frog’s hindlimb. This hybrid mechanism is composed of a planar six-bar linkage, which is designed using homotopy continuation and a spatial four-bar mechanism. The two sub-chains connected on the foot form a closed loop, which decreases the degrees of freedom (DoF) of the foot to 2. The preliminary simulations validate the amphibious function of the designed mechanism.
Xinran Wang, Wen Li, Dongxu Hu, Xingjian Dai, and Haisheng Chen
Mech. Sci., 12, 677–688, https://doi.org/10.5194/ms-12-677-2021, https://doi.org/10.5194/ms-12-677-2021, 2021
Short summary
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This paper investigates the influence of friction effects on a gear-rotor system in compressed air energy storage (CAES), a new mathematical model of the system is established, and some new vibration characteristics of the gear-rotor system are shown in this paper. The results obtained in this paper will provide a reference for the study and design of a gear-rotor system in CAES.
Wenjie Wang, Qing Tao, Xiaohua Wang, Yuting Cao, and Congcong Chen
Mech. Sci., 12, 649–660, https://doi.org/10.5194/ms-12-649-2021, https://doi.org/10.5194/ms-12-649-2021, 2021
Juan Ignacio Valderrama-Rodríguez, José M. Rico, and J. Jesús Cervantes-Sánchez
Mech. Sci., 11, 91–99, https://doi.org/10.5194/ms-11-91-2020, https://doi.org/10.5194/ms-11-91-2020, 2020
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The paper presents a general procedure to determine the instantaneous rotation center for planar mechanisms, or its kinematical equivalent in the case of spherical or spatial cases, from the velocity analysis of the mechanism. The procedure is based on the theoretical results of the Lie algebra, se(3), of the Euclidean group, together with the Killing and Klein forms. The paper shows that a previous contribution contains fundamental errors and it was done in order to unify the theory.
Yi Yang, Yaqi Tang, Haijun Chen, Yan Peng, and Huayan Pu
Mech. Sci., 10, 255–272, https://doi.org/10.5194/ms-10-255-2019, https://doi.org/10.5194/ms-10-255-2019, 2019
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With the requirement of heavy load for pick-and-place operation, a new 3-DoF asymmetric translational parallel manipulator is invented in this paper. This manipulator is assembled by a kinematic limb with the parallel linear motion elements(PLMEs), and a single loop 2-UPR. Owning to the linear actuators directly connecting the moving and the fixed platforms, this parallel manipulator has high force transmission efficiency, and adapts to pick-and-place operation under heavy load.
Chongfei Huai and Yaping Zhao
Mech. Sci., 10, 199–211, https://doi.org/10.5194/ms-10-199-2019, https://doi.org/10.5194/ms-10-199-2019, 2019
Gaspar Rodríguez Jiménez, David Rodríguez Salgado, Francisco Javier Alonso, and José María del Castillo
Mech. Sci., 9, 359–371, https://doi.org/10.5194/ms-9-359-2018, https://doi.org/10.5194/ms-9-359-2018, 2018
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The present work describes the design and build of a new completely mechanical propulsion system for manual wheelchairs for use in ascending or descending long ramps. The design is characterized by a self-locking mechanism that activates automatically to brake the chair when the user stops pushing. The main component of the propulsion system is a planetary gear train that can self-lock, this means that the user does not need to activate external brakes.
Zharilkassin Iskakov, Kuatbay Bissembayev, and Nutpulla Jamalov
Mech. Sci., 9, 307–325, https://doi.org/10.5194/ms-9-307-2018, https://doi.org/10.5194/ms-9-307-2018, 2018
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• With a large load on the vibrating table, the oscillation of the motor shaft angular velocity and the effect of friction on it are more significant.
• Simulink model of the mechanism was developed for numerical calculations.
• Friction increases the difference between the maximum and minimum values of the angular velocity and the coefficient of non-uniformity of rotation.
• Sliding friction influences the frequency, the maximum and minimum values of the work-table kinematic parameters.
Chan-Jung Kim
Mech. Sci., 9, 259–266, https://doi.org/10.5194/ms-9-259-2018, https://doi.org/10.5194/ms-9-259-2018, 2018
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The conceptual design of balance shaft was very important process as how to locate the unbalance masses and corresponding supporting bearings. In this paper, the optimal conceptual balance shaft model was derived by using proposed objective functions for an inline 3-cylinder engine and an inline 4-cylinder one, respectively. Two kinds of optimal model were derived from simulations and efficient design guidelines was finally explained with design flowchart.
Wenjie Wang, Lingtao Yu, and Jing Yang
Mech. Sci., 8, 323–335, https://doi.org/10.5194/ms-8-323-2017, https://doi.org/10.5194/ms-8-323-2017, 2017
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Force sensing plays an important role in minimally invasive surgery. In this study, a new asymmetric cable-driven type of micromanipulator for a surgical robot was designed, and a joint angle estimator(JAE) was designed based on the dynamical model system. Closed-loop control of the joint angle was carried out by regarding the JAE output as the feedback signal. An external force estimator was designed using a disturbance observer. The experimental results shown the correctness and validity.
Santhakumar Mohan and Burkhard Corves
Mech. Sci., 8, 235–248, https://doi.org/10.5194/ms-8-235-2017, https://doi.org/10.5194/ms-8-235-2017, 2017
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This paper presents the complete dynamic model of a new six degrees of freedom (DOF) spatial 3-RPRS parallel manipulator. Further, a robust task-space trajectory tracking control is also designed for the manipulator along with a nonlinear disturbance observer. To demonstrate the efficacy and show the complete performance of the proposed controller, virtual prototype experiments are executed using one of multibody dynamics software namely MSC Adams.
Bingxiao Ding, Yangmin Li, Xiao Xiao, Yirui Tang, and Bin Li
Mech. Sci., 8, 117–126, https://doi.org/10.5194/ms-8-117-2017, https://doi.org/10.5194/ms-8-117-2017, 2017
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A flexure-based monolithic micro manipulation stage with large workspace is designed and analyzed. The piezoelectric actuators are adopted to drive the manipulation stage. The optimized lever amplifier is integrated into the mechanism in order to compensate the stroke of the piezoelectric actuators. The working range of the manipulation stage along each axis is ± 42.31 μm, ± 48.56 μm, 0–10.28 m rad, respectively.
Guoyong Yang, Hongguang Wang, Jizhong Xiao, Zuowei Wang, and Lie Ling
Mech. Sci., 8, 51–63, https://doi.org/10.5194/ms-8-51-2017, https://doi.org/10.5194/ms-8-51-2017, 2017
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This paper presents a gravity unloading facility to simulate micro-gravity environment of space. The facility unloads the gravity of artificial antenna of satellite and its pointing mechanism to test the performance of the pointing mechanism on the ground. The facility consists of two layers to unload gravity hierarchically and simultaneously while the antenna pointing mechanism consists of two joints. The calculation, simulation and experiments all show the effectiveness of the method applied.
R. Benoit, N. Delanoue, S. Lagrange, and P. Wenger
Mech. Sci., 7, 31–38, https://doi.org/10.5194/ms-7-31-2016, https://doi.org/10.5194/ms-7-31-2016, 2016
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We propose two Interval Analysis based methods to characterize novel robots. Interval analysis theory allows us to consider intervals instead of values, making it possible to use computer algorithms, without the drawback of rounding errors. The first proposed method can isolate chosen interest points and is applied to the characteristic cusp and node points of 3R orthogonal manipulators. The second method encloses the robot available postures, giving complementary information on the novel robot.
G. Hao and J. Mullins
Mech. Sci., 6, 75–80, https://doi.org/10.5194/ms-6-75-2015, https://doi.org/10.5194/ms-6-75-2015, 2015
N. Khan, I. Ullah, and M. Al-Grafi
Mech. Sci., 6, 29–34, https://doi.org/10.5194/ms-6-29-2015, https://doi.org/10.5194/ms-6-29-2015, 2015
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The problem of dimensional synthesis of mechanisms to trace a given closed curve is solved by (a) representation of curve shape using normalized Fourier descriptors and (b) learning the relation between Fourier descriptors and mechanism dimensions by an artificial neural network (ANN). The ANN developed suggests dimensions of a four-bar mechanism with coupler curve of shape similar to the one desired. The dimensions are further refined by optimization.
G. Palmieri
Mech. Sci., 6, 9–14, https://doi.org/10.5194/ms-6-9-2015, https://doi.org/10.5194/ms-6-9-2015, 2015
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This paper deals with an elasto-static analysis of a 2-DOF spherical parallel
wrist where the links and the joints are considered flexible. An FEM approach is used to analyze the problem in a series of configurations of the wrist. The results are elaborated in order to obtain continuous maps of the positioning and orientation errors over the workspace of the machine.
Q. Meng, Y. Li, and J. Xu
Mech. Sci., 4, 345–356, https://doi.org/10.5194/ms-4-345-2013, https://doi.org/10.5194/ms-4-345-2013, 2013
H. Mazhar, T. Heyn, A. Pazouki, D. Melanz, A. Seidl, A. Bartholomew, A. Tasora, and D. Negrut
Mech. Sci., 4, 49–64, https://doi.org/10.5194/ms-4-49-2013, https://doi.org/10.5194/ms-4-49-2013, 2013
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Short summary
A super element of the telescopic boom for an all-terrain crane is proposed, and its geometric nonlinear calculation is realized by the co-rotational (CR) formulation. Considering the cable force, the nonlinear equilibrium equations of the system are established, which are transformed into differential equations, and the load displacement curves of the nodes are obtained. Through the slope ratio of the load displacement curve, the judgment criterion of the instability load is established.
A super element of the telescopic boom for an all-terrain crane is proposed, and its geometric...
