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Vehicle road load emulation method

A simulation method and road technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as inability to obtain road load data, inability to perform fatigue analysis, and inability to perform physical tests.

Inactive Publication Date: 2009-08-19
TONGJI UNIV
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AI Technical Summary

Problems solved by technology

[0003] In the conceptual design stage of a new model, because the physical prototype has not yet been obtained, physical tests cannot be carried out, road load data cannot be obtained, and fatigue analysis cannot be performed before the design and manufacturing process to truly predict the life of the product

Method used

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  • Vehicle road load emulation method
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Experimental program
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Embodiment Construction

[0100] Please refer to the accompanying drawings for a further description of the present invention.

[0101] Such as figure 1 As shown, the present invention provides a kind of simulation method of vehicle road load, and this simulation method comprises the following steps:

[0102] 1) Modular modeling of the whole vehicle;

[0103] ①Establish finite element models of body-in-white and other non-core modules;

[0104] Body-in-white modules include bodyshells, doors, hoods and other body panels;

[0105] Non-core modules include steering system, transmission system, brake system, instrument panel, seat, exhaust pipe;

[0106] The establishment of the finite element model of the body in white and other non-core modules includes grid division, such as figure 2 As shown, element property selection and material property assignment.

[0107] After the grid division is completed, the quality of the grid division is evaluated according to the evaluation indicators of each param...

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Abstract

The invention provides a vehicle road load simulation method which comprises the following steps of: 1) complete vehicle modular modeling; 2) complete vehicle modular model validation; 3) complete vehicle model assembly; 4) complete vehicle model validation; 5) establishment of finite element models of enhanced durable roads; 6) model initialization; 7) obtaining of virtual road load result; and 8) comparative validation with physical road load. The invention has the advantages of shortening development time and reducing costs, which is of great significance to vehicle development during the conceptual design phase. During the conceptual design phase of new models, fatigue analysis can be carried out before the design and manufacture process by using a virtual prototype to predict road load so as to truly predict the life of the product, thus greatly reducing great expenses caused by producing prototype machines and testing the fatigue life.

Description

technical field [0001] The invention relates to a simulation method, in particular to a simulation method used in the development and design stage of a new automobile model, which obtains the road load simulation method of the vehicle under different road surface conditions by means of a numerical test, and improves the durability of the vehicle and parts. Evaluation provides the necessary external load data. Background technique [0002] At present, physical tests are mainly used in the field of road load measurement, and the main test equipment is a six-component force measurement system. Wheel six-component force measurement system is a set of physical equipment for engineering tests, mainly composed of shaft adapter, wheel six-component force sensor, wheel flange adapter, amplifier collector ring assembly, electronic adjustment equipment, data acquisition system, etc., can quickly Measure the three forces and three torques on the wheel. [0003] In the conceptual desig...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 吴光强李运超盛云
Owner TONGJI UNIV
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