Finite element analysis method for simulating ride comfort of entire vehicle under pulse input

A technology of pulse input and analysis method, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of small improvement space and unsatisfactory smoothness, etc., to achieve improved ride comfort, ride comfort, The effect of shortening the development cycle

Inactive Publication Date: 2013-12-25
CHERY AUTOMOBILE CO LTD
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Problems solved by technology

If it is found in the test that the smoothness does not meet the nat

Method used

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  • Finite element analysis method for simulating ride comfort of entire vehicle under pulse input
  • Finite element analysis method for simulating ride comfort of entire vehicle under pulse input
  • Finite element analysis method for simulating ride comfort of entire vehicle under pulse input

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Embodiment Construction

[0034] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment among various implementations of the present invention.

[0035] Calculate the speed of 30km / h for a certain model to pass through a 1 / 2 sinusoidal buffer strip with a size of 180mm*30mm, and output the vibration response of the wheel center and the steering wheel. The wheelbase of this model is 2548mm.

[0036] 1. Use computer software to establish a finite element model of a vehicle, including body, opening parts, chassis, interior and exterior accessories, etc., see figure 1 .

[0037] 2. Define the size model of the transient excitation buffer bar (this analysis takes 1 / 2 sinusoidal buffer bar as an example), see figure 2 .

[0038] 3. Calculate the loading parameters.

[0039] In the calculation of this example, the units are as follows: length (mm), time (s), weight (kg), density (kg / mm 3 ), the relevant parameters are:

[0040] Sp...

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Abstract

The invention relates to a finite element analysis method for simulating ride comfort of an entire vehicle under pulse input. The finite element analysis method comprises the following steps: (1) establishing an automobile finite element model by using computer software at a design and development stage of an automobile; (2) defining a transient excitation buffer strip or triangular bump size model; (3) calculating loading parameters; (4) enabling front and rear wheels to passthrough a buffer strip or triangular bump at a certain speed while simulating left and right wheels of the automobile; (5) calculating transient response of the automobile at certain timeunder aninput determinate signal. The research and development period is shortened; the research and development cost is saved; the operation is convenient; only 2-3 hours are required for calculating the ride comfort of the entire vehicle through the software; the ride comfort of the automobile can be very easily improved through a finite element method.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a finite element analysis method for simulating ride comfort of a complete vehicle under pulse input. Background technique [0002] Vehicle ride comfort refers to the ability to ensure that the occupants will not feel uncomfortable and fatigued by the vibration and impact of the body when the vehicle is running within the normal driving speed range, as well as the performance of keeping the cargo intact. It is a very important index in the various performances of automobiles. Its quality not only affects the fatigue degree of drivers and passengers, comfort and safe and reliable transportation of goods, but also affects the fuel economy of automobiles and other issues. The main purpose of studying automobile ride comfort is to control the dynamic characteristics of the automobile vibration system, so that the "output" of vibration does not exceed a certain limit under the "input" of a ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 李畅田冠男王君
Owner CHERY AUTOMOBILE CO LTD
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