Method for carrying out CAE analysis on rigidity of auxiliary frame of special vehicle

A sub-frame and special-purpose vehicle technology is applied in the field of CAE analysis of the sub-frame stiffness of special-purpose vehicles. Effect

Pending Publication Date: 2021-03-19
NANJING HENGTIAN LINGRUI AUTOMOBILE CO LTD
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Problems solved by technology

[0003] Because it is not possible to test the stiffness characteristics of the subframe at the initial stage of project development, the stiffness characteristics of the subframe are often evaluated according to the design plan. The accuracy of the period is directly affected by the level of technicians, and it is difficult to form a set of general pre-design evaluation. technical solutions

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  • Method for carrying out CAE analysis on rigidity of auxiliary frame of special vehicle
  • Method for carrying out CAE analysis on rigidity of auxiliary frame of special vehicle

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Such as figure 1 with figure 2 , the present invention is a method for performing CAE analysis on the stiffness of the subframe of a special purpose vehicle. Curved beam 5, cylindrical tube 6, reinforcing plate 7 and connecting fixed bracket 8, main girder 4 is used for installing front suspension and rear suspension, the present invention comprises to the CAE analysis method of special vehicle auxiliary frame:

[0028] 1) Establish the CAE analysis model of the subframe:

[0029] Firstly, the geometry of the 3D model of the sub-frame of the special vehicle is cleaned up, and then the grid is divided to establish the analysis model of each part on the sub-frame;

[0030] 2) Apply the constraints and loads required for bending stiffness calculation:

[0031] The two main beams 4 in the subframe are located at the installation positions of the leaf springs of...

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Abstract

The invention discloses a method for carrying out CAE analysis on the rigidity of an auxiliary frame of a special vehicle, which is used for studying e rigidity of the auxiliary frame of the special vehicle by adopting a CAE analysis method, calculating the bending rigidity and the torsional rigidity of the auxiliary frame according to the determined technical scheme and judging whether the deformation state of the auxiliary frame is excellent or not. Therefore, the analysis method effectively controls the time cost and the economic cost of repeated die modification and repeated verification in the later development and optimization process, meanwhile, a set of universal technical evaluation scheme can be formed, and the invention is suitable for wider application crowds and application fields.

Description

Technical field: [0001] The invention relates to a method for CAE analysis of the rigidity of the auxiliary frame of a special vehicle. Background technique: [0002] At present, in special-purpose vehicle manufacturing enterprises (for the positioning of special-purpose vehicles, see: National Standard GB / T 17350 "Terms, Codes and Preparation Methods for Special-Purpose Vehicles and Special-purpose Semi-trailers"), the main frame is generally a second-class chassis purchased from outside, and the sub-frame is The skeleton developed and designed by the company itself is assembled with the main frame after the design and production are completed to form the main skeleton structure of the car body. The sub-frame of a special-purpose vehicle generally needs to install some special equipment, needs to support the weight of the entire carriage, and is also subject to various impact loads from the ground. If the rigidity is insufficient, it will cause serious deformation of the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06F30/17G06F30/23G06F111/04G06F119/14
CPCG06F30/15G06F30/17G06F30/23G06F2111/04G06F2119/14
Inventor 徐婧雨
Owner NANJING HENGTIAN LINGRUI AUTOMOBILE CO LTD
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