Application method of radial force in 3D model of ring part
A technology of three-dimensional models and ring parts, which is applied in the field of computer programs, can solve problems such as inconvenient, inability to achieve accurate loading, failure to satisfy absolute accuracy and absolute authenticity, etc., and achieve the effect of fast loading
Inactive Publication Date: 2019-01-25
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology
However, most of the existing finite element analysis software similar to ADAMS manually set the force load, which is inconvenient and unable to achieve accurate loading, and cannot meet the above-mentioned absolute accuracy and absolute authenticity requirements
Method used
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Embodiment
[0024] figure 1 It is a schematic diagram of steps of a method for applying radial force of a three-dimensional model of an annular part according to an embodiment of the present invention.
[0025] like figure 1 As shown, the specific load application process is described in detail below.
[0026] The first step is to build a three-dimensional model of a car tire in ABAQUS. After a series of settings, such as material property settings, mesh density settings, etc., the tire flexible body file is obtained and saved in the format of chetai.mnf.
[0027] In the second step, for the obtained flexible body file, the grid node coordinates and node serial numbers are extracted in ABAQUS, and finally the extracted grid node coordinates and node serial numbers are saved in .rpt format. Open the saved .rpt file, which contains the node coordinate values before deformation and after deformation, delete the node coordinate value after deformation, keep only the node coordinate value ...
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The invention provides a method for applying three-dimensional model radial force of a ring part. The method comprises the steps of 1, establishing a three-dimensional model of the ring part, setting corresponding material attributes and grid density, conducting mesh generation after grid convergence is verified, and generating a tire flexible body file; 2, extracting the coordinates and serial numbers of grid nodes obtained after mesh generation; 3, decomposing force F to be applied at the position of the grid node pointing at the circle center of the ring part in the directions of x axis and y axis by means of the force decomposing principle, so that Fx and Fy are obtained, wherein Fx= Lambda1F sin alpha, Fy=Lambda2F cos alpha, the equation of alpha is shown in description, Lambda1 and Lambda2 are arbitrary values and determined by actual load, the values of Lambda1 and Lambda2 can be positive and negative to show the direction of force, and x and y are coordinates of the grid node; 4, summarizing Fx and Fy obtained after decomposition of forces of all the grid nodes, and making a form about node number, force name and force value; 5, importing the form about node number, force name and force value into the three-dimensional model to finish application of radial force of the three-dimensional model.
Description
technical field [0001] The invention belongs to the field of computer programs, in particular to a method for applying radial force in a three-dimensional model. Background technique [0002] ADAMS software is a software developed by American Mechanical Dynamics Inc. (now merged into American MSC Company) for virtual product development in mechanical products. The multi-body dynamics model and virtual experiment established by this software can help designers find design defects in the product development stage, and then propose a series of improvement plans based on the analysis and research of the defects. The use of this software greatly reduces the cost in the process of mechanical product development and improves the efficiency in the field of mechanical product design and development. Before using this software for dynamic and kinematic analysis, it is necessary to apply force and motion in a certain direction to the model as required. By reasonably applying force and...
Claims
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IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 汪中厚刘欣荣赵超凡王冰青张艺杨润春张翠
Owner UNIV OF SHANGHAI FOR SCI & TECH