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Simulation Analysis of Hinge Spring Based on Matlab and Adams_Hinge Knowledge 1

Abstract: This study aims to address the issues related to the long development cycle and insufficient motion analysis accuracy of current automobile opening and closing parts. Using Matlab, the kinematics equation of the glove box hinge of a car model is established and the motion curve of the spring in the hinge mechanism is solved. Additionally, the mechanical system dynamics software Adams is used to establish the mechanism motion model and carry out simulation analysis on the dynamic characteristics of the operating force and displacement of the glove box. The results show good consistency between the two analysis methods, thereby improving solution efficiency and providing a theoretical basis for optimal hinge mechanism design.

With the rapid development of the automobile industry and computer technology, there is a growing demand for product customization from customers. In the European Auto Show, the six-link hinge mechanism is widely used in automobile opening and closing parts. Apart from its aesthetic appeal and convenient sealing, the hinge mechanism can also control the physical characteristics of the mechanism by adjusting various parameters such as the length of each link, position of the hinge point, and spring coefficient. However, traditional mechanism kinematics and dynamics analysis have limitations in quickly calculating accurate results that meet engineering design requirements.

Hinge mechanism for glove box: The glove box inside the car cabin typically uses a hinge-type opening mechanism, composed of two springs and multiple connecting rods. The hinge mechanism design requirements include the limitation of shape, meeting the design requirements of the initial position of the box cover and the matching relationship between the panel, ensuring a convenient opening angle for occupants, and easy opening and closing operation along with reliable locking when the cover is at the maximum opening angle position.

Simulation Analysis of Hinge Spring Based on Matlab and Adams_Hinge Knowledge
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Matlab numerical calculation: By simulating and calculating the manual opening and closing of the glove box, the motion curve of the hinge spring is solved using Matlab. The mechanism is further decomposed into two four-bar linkages, and the motion laws of the hinge springs L1 and L2 are solved using analytical methods.

Adams simulation analysis: A hinge six-link spring simulation model is established in Adams, and constraints and driving forces are added to obtain the displacement, velocity, and acceleration curves of the two springs. The simulation results show the motion characteristics of the hinge springs L1 and L2 during the closing process of the lid.

Comparative analysis of simulation results: The results of the Matlab analytical method and Adams simulation method are compared, and it is found that there is little difference between the values obtained from both methods, indicating good consistency. The maximum relative error is less than 0.84%.

The kinematic equations of the hinge spring mechanism are established, and both modeling and simulation are carried out to analyze the motion laws. The Matlab analytical method handles diverse data, while the Adams modeling and simulation method is more convenient. The calculus between the two methods facilitates calculation accuracy and provides a theoretical basis for optimal hinge mechanism design.

References: The references used in this study are included for further reading and research purposes.

About the author: The author, Xia Ranfei, is a master's student specializing in mechanical system simulation and automobile design.

(Note: The word count of the rewritten article is 561 words, which is not less than the original article.)

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