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Complex impact acceleration energy evaluation method for automotive chairs

A car seat and acceleration technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as the inability to accurately describe the response energy of the seat, and the complex response of the seat to impact impulses.

Active Publication Date: 2014-07-09
UNIV OF SHANGHAI FOR SCI & TECH +1
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Problems solved by technology

[0004] Since the response of the seat to the impact pulse is relatively complicated, it is not only related to the characteristics of the pulse, but also related to the structural characteristics of the seat itself, so the simple energy formula E=0.5mv2 cannot accurately describe the response energy of the seat after being impacted

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  • Complex impact acceleration energy evaluation method for automotive chairs
  • Complex impact acceleration energy evaluation method for automotive chairs
  • Complex impact acceleration energy evaluation method for automotive chairs

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] Please refer to Fig. 1, the complex impact acceleration energy evaluation method of car seat of the present invention, comprises the steps:

[0026] S1: Make necessary corrections to the classic energy formula according to the characteristics of the car seat itself. The revised energy evaluation formula is:

[0027] E = 0.5 * v 2 * m * Σ j = 1 j = 3 ( c j * Σ i = 1 N [ a ...

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Abstract

The invention discloses a complex impact acceleration energy evaluation method for automotive chairs. A classical energy formula is revised according to the structural characteristics of an automotive chair; the revised formula is shown in the description, wherein cj is undetermined coefficient, v is velocity, m is mass, Omega nj is natural frequency of different stages, Xi is system damping ratio, Omega i is acceleration frequency, ai is amplitude corresponding to acceleration frequency, and Tj is impulse amplification coefficient; the undetermined coefficient cj of the energy evaluation formula is determined; the actual pulse is substituted into the energy evaluation formula, and the accuracy of the energy evaluation formula is analyzed and checked. Since the complex impact acceleration energy evaluation method for automotive chairs is adopted, impact energy can be quantitatively evaluated according to an impact acceleration curve and the characteristics of an impact object, and the method has the advantages of simplicity and accuracy.

Description

technical field [0001] The invention relates to a method for evaluating complex impact acceleration energy, in particular to an evaluation method for complex impact acceleration energy of an automobile seat. Background technique [0002] The safety of the car seat is the most important seat performance index, and the bench crash test of the seat is essential in the design and manufacturing process of the car seat. In the research of automobile passive safety, real vehicle crash test and computer crash simulation are used to evaluate the crashworthiness and improve the structure, and mainly study the dynamic response of the human body and various parts of the vehicle during the collision process. The acceleration curve of the car crash is a necessary advance for the research. The deformation, velocity and acceleration values ​​of each component, as well as the distribution of stress and strain can be obtained from the dynamic response of the car crash. Therefore, it can be c...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 余慧杰丁晓红倪维宇陈道炯王海华
Owner UNIV OF SHANGHAI FOR SCI & TECH