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ANALYSIS OF A TRUNK LID MECHANISM USING MSC ADAMS SOFTWARE AND ITS COMPARISON WITH THE MATHEMATICAL MODEL
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This paper is concerned with the analysis of a trunk lid mechanism which is a four-bar linkage using MSC Adams Software and its comparison with a mathematical model. The opening-closing mechanism is analyzed in terms of kinematic and dynamic aspects to determine the necessary hand force for opening and closing the trunk lid of the car in Adams/Views which is a module of MSC Adams. A mathematical model of the mechanism is presented by using the virtual work principle and the necessary hand forces for opening and closing the lid are obtained. The theoretical results are compared with those found from the Adams software. The comparison of analytical and computational results are observed to be in good agreement. Finally, the preload and the stiffness of the spring by which the trunk lid is actuated are optimized to achieve a minimum value of average hand force needed to open and close the trunk lid.
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This paper is concerned with the design and analysis of a rear trunk lid mechanism which is used in sedan passenger cars, and actuated by torsional bars. First, the mechanism actually consisting of a four bar linkage is designed regarding certain kinematic aspects. Afterwards, a mathematical model is developed to determine some requirements crucial to design process such as the equilibrium positions and the opening velocity of, and the required hand force to open and close the trunk lid. By dimensioning mechanism and choosing torsional bar stiffness properly, a trunk lid mechanism is obtained, which meets the demands of the higher first equilibrium angle and significantly small hand forces. Hence, this paper presents a practical and easy methodology in the design and analysis of a trunk lid mechanism for design engineers.
This paper deals with kinematic analysis of a six-member mechanism. The analytical solution is based on the fundamental kinematic relations derived for this mechanism. The program MSC ADAMS was selected for the simulation modeling of mechanism. That program allows comprehensive analysis of this system using a simple modeling.
This paper proposes a novel concept to obtain variable input speeds for a four-bar mechanism driven by an A.C. motor. In such a system, a continuously variable transmission (CVT) is proposed to use instead of an inverter-controlled motor. By this way, the speed variability which is crucial for obtaining different manufacturing and transportation processes can be provided by mechanically. Thus, more efficient system can be achieved than classical motor controlled systems since the CVT allows electrical motor to run at its nominal point in all conditions. For analyzing the dynamics of this new system, a theoretical model is established regarding that a half toroidal CVT is added between the motor and the mechanism. The simulation results associated with the systems with and without a CVT are presented by comparing to each other. The results indicate that the four-bar mechanism equipped with a CVT is feasible for the entire range of possible reduction ratios of the CVT.
In this paper a dynamic simulation methodology of systems is presented by using
ADAMS/MATLAB co-simulation. This methodology allows simulation, development and
validation of different control strategiesfor robotic manipulator models in a fast way. It provides a
first stage into the design of robotic prototypes for researchers and professionals. Finally, the
methodology was validated by constructing a simulation model of a double pendulum and by
implementing a PD type control strategy.
In traditional rear trunk lid designs, extra devices (e.g., hydraulic actuators and spring mechanisms) are employed to compensate the lid weight and reduce the efforts for both opening and closing it. Such devices often consist of a number of parts, thus leading to high costs for manufacture, assembly and maintenance. In this paper, we designed a compliant bistable mechanism to keep the lid's two states and compensate the lid weight, which leads to a system that requires only a small input force to switch between the two states. In the design, the pseudo-rigid-body model (PRBM) was employed to model the compliant mechanism, a particle swarm optimizer was used to optimize the PRBM parameters, and promising results were presented and discussed. The use of complaint mechanism can lead to reduction of the costs for manufacture, assembly and maintenance.
The symmetry inherent in four-link mechanisms has been used in deriving a general analytical expression relating the diagonals of a four-link mechanism by means of a characteristic parameter. The nature of this expression has been analyzed. The particular case obtained by using as a parameter the square root of the sum of the squares of the lengths of the links diminished by the sum of the squares of the diagonals, has been worked out in detail and the results reduced to a form believed to be useful in design work. Design applications have been considered.
On the dynamic behavior of four-bar linkage driven by a velocity controlled DC motor
- G Incerti
G. Incerti, (2012) 'On the dynamic behavior of four-bar linkage driven by a velocity controlled DC motor' Word
Academy of Science Engineering and Technology, 6 (9) 598-604.
Investigation of Gas Piston Actuated Opening-Closing Trunk Lid Mechanisms Used in Passenger Cars
- A Yildiz
- O Kopmaz
- Y Gökyer
Yildiz, A., Kopmaz, O. and Gökyer, Y. (2015) 'Investigation of Gas Piston Actuated Opening-Closing Trunk Lid
Mechanisms Used in Passenger Cars.' Uludağ University Journal of The Faculty of Engineering 20 (2) 1-10.
Design and Kinematics Analysis of a Parallel Mechanism to be Utilized as a Luggage Door by an Analogy to a Four
- B Baykus
- E Anli
- İ Ozkol
Baykus B., Anli E., Ozkol İ. (2011) 'Design and Kinematics Analysis of a Parallel Mechanism to be Utilized as a
Luggage Door by an Analogy to a Four-Bar Mechanism' Engineering, Vol.3 411-421