Optimum design method of non-bearing frame structure of light vehicle

A frame structure and optimization design technology, applied in computing, special data processing applications, instruments, etc., to achieve optimal design effects, improve bending stiffness, and good design effects

Inactive Publication Date: 2014-10-22
ACADEMY OF ARMORED FORCES ENG PLA
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Problems solved by technology

For light vehicle frame structures, structural improvement design based on traditional methods or structural optimization design methods such as shape optimization and size optimization can only partially adjust the overall bending and torsional stiffness of the structure

Method used

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  • Optimum design method of non-bearing frame structure of light vehicle
  • Optimum design method of non-bearing frame structure of light vehicle
  • Optimum design method of non-bearing frame structure of light vehicle

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Embodiment Construction

[0027] The invention discloses an optimal design method for a non-load-bearing frame structure of a light vehicle. The invention mainly includes establishing a geometric model of the frame structure, establishing a simplified equivalent finite element model of the frame structure, loading the frame load and boundary conditions, defining Implementation steps such as optimizing the design area and design variables, defining the optimization objective function, structural topology optimization design, reconstruction of the geometric model of the frame structure, and structural verification.

[0028] The present invention provides a method for optimizing the design of a non-load-bearing frame structure of a light vehicle, comprising the following steps:

[0029] (1) Use SolidWorks software to establish a three-dimensional geometric model of the original frame structure of the light vehicle, and output it into an IGES data file format to obtain the IGES model of the frame structure;...

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Abstract

The invention provides an optimum design method of a non-bearing frame structure of a light vehicle. The optimum design method comprises the steps of establishing a three-dimensional geometrical model of the original frame structure of the light vehicle by use of SolidWorks software and outputting the model in the IGES (Initial Graphics Exchange Specification) data file format, thereby obtaining the IGES model of the frame structure, next, reading the IGES model of the frame structure in Hypermesh software, performing geometrical processing and dividing finite element meshes by use of the Hypermesh software, and performing topological optimization on the cross beam structure of the frame by use of the structure optimization function of the Hypermesh software without changing the structural forms of the longitudinal beam and the attached seats of the frame, thereby realizing the optimum design of the arrangement position and the structural form of the cross beam structure. The optimum design method of the non-bearing frame structure of the light vehicle is capable of improving the bending rigidity and torsional rigidity of the frame of the light vehicle and the inherent frequency of the frame structure without increasing the weight of the frame structure, thereby ensuring that the frame has relatively high overall rigidity and improving the reliability, security, operation stability and vibration property of the vehicle.

Description

technical field [0001] The invention relates to an optimal design method for a non-load-bearing frame structure of a light vehicle. Background technique [0002] The frame structure is used to connect the body, cab, suspension, etc. into a whole, and bears almost all kinds of loads during the use of the vehicle, mainly including bending, torsion, and impact loads. Under the action of these loads, the frame The stiffness properties of the structure play a pivotal role. Unreasonable structural stiffness of the frame will directly affect the load-bearing function of the frame. The overall low stiffness of the frame will reduce the overall load-bearing capacity of the frame. The local stiffness of the frame is low, which will increase the local deformation of the frame. Insufficient will cause excessive structural deformation, affecting the relative position of the assembly installed on the frame. At the same time, insufficient frame rigidity will also cause low vibration freq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 芮强王红岩洪煌杰李建阳王钦龙栗浩展李同飞
Owner ACADEMY OF ARMORED FORCES ENG PLA
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