Bogie modeling system and method based on CATIA software, and memory
A modeling method and bogie technology, applied in geometric CAD, special data processing applications, design optimization/simulation, etc., to achieve the effect of improving overall performance and accuracy
Active Publication Date: 2021-06-22
CRRC QINGDAO SIFANG CO LTD
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Problems solved by technology
[0003] Current simulation software can only simulate dynamic simulations of two parts with simple relative displacements, such as translation, rotation, meshing motion
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[0028] In this paper, in order to realize the dynamic simulation of the bogie, the motion of the bogie is studied in depth, and it is found that the motion of the bogie includes:
[0029] 1. The frame has translational motion along the X, Y, and Z axes in space and rotational motion around these three axes at the same time;
[0030] 2. One end node of the shock absorber installed on the frame moves with the frame, and the other end node is fixed to the vehicle body. The telescopic rod and the outer cylinder in the shock absorber rotate and swing around these two nodes respectively, and there is a relative translation between them sports;
[0031] 3. The two ends of the adjustment rod in the automatic height adjustment device can freely rotate around the corresponding ends when working.
[0032] The bogie modeling method provided by the present invention is based on CATIA software. The kinematic mechanism module of the current CATIA software can also simulate the kinematic mec...
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The invention discloses a bogie kinematics modeling system and method based on CATIA software and a memory. The method comprises the steps that a framework assembly model and a component model with a relative motion relation relative to a framework are constructed; according to a pre-stored spatial degree of freedom formula df = 6 * n-k1-k2 = 0, kinematic pairs are matched at the connection positions of the component model and the framework assembly model; corresponding motion parameters are loaded on at least one of the component model and the framework assembly model, and motion tracks of corresponding parts of a bogie are simulated. The bogie is divided into a driving part and a driven part, actual relative motion is simulated by defining a kinematic pair of each connecting point, a formula for calculating the spatial degree of freedom of each component is redefined, a bogie model is established through CATIA software, bogie motion space analogue simulation is achieved, and the simulation method is rapid, accurate and high in practicability. Moreover, a simulation result can be used for guiding the early-stage design of the bogie, improves the design accuracy of the bogie, and improves the overall performance of a railway vehicle.
Description
technical field [0001] The invention relates to the technical field of bogie motion simulation simulation, in particular to a bogie modeling system, method and memory based on CATIA software. Background technique [0002] With the development of computer technology, the automation of the production process is showing a trend of accelerated development. At present, the software used in the process of designing railway vehicles by various companies is different. Most companies design the components of railway vehicles based on CAD software, which is basically In two-dimensional presentation, there is no specific way to present the relative position of each component with relative motion during motion. [0003] Current simulation software can only simulate dynamic simulations of two parts with simple relative displacements, such as translation, rotation, and meshing motion. For the bogie, there are many relative moving parts, and in addition to translation and rotation, it als...
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IPC IPC(8): G06F30/15G06F30/20
CPCG06F30/15G06F30/20
Inventor 杨欣赵长龙周君锋李贵宇张朝前
Owner CRRC QINGDAO SIFANG CO LTD