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An optimal design method for the anti-tilt performance of student seats on special school buses

An optimized design and seat technology, which is applied in the field of school bus collision safety, can solve the problems of design blindness, repeated modeling and long calculation time, and achieve the effect of reducing data scale, facilitating large-scale calculations, and less time-consuming

Inactive Publication Date: 2019-04-16
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present invention provides an optimal design method for fast and accurate modeling, accelerated model calculation speed, and fast and accurate optimization of the anti-tilt performance of the seat, which solves the problems existing in the optimization design process of the anti-tilt performance of school bus student seats at present. Design blindness, as well as the time-consuming problem of repeated modeling and calculation when CAE technology is used in the optimization design process

Method used

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  • An optimal design method for the anti-tilt performance of student seats on special school buses
  • An optimal design method for the anti-tilt performance of student seats on special school buses
  • An optimal design method for the anti-tilt performance of student seats on special school buses

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Embodiment

[0108] In this implementation case, a long three-seater school bus seat for primary and secondary schools is used as the optimization design object. The injury index of this seat exceeds the limit value in the two dummies without seat belt restraints. , the existing seat simulation model is established by Ls-dyna software. On the basis of the existing dynamic test simulation analysis model of the seat, the optimal design method of the present invention is used to optimize the anti-tilt performance of the seat. In this embodiment, first control the thickness of the backboard between 1.0mm-2.0mm and the thickness of the backrest foam between 10mm-30mm, and then change the thickness of the fixed connector in the skeleton to 1.5mm -4.0mm, so that the occupant's injury evaluation index value in the simulation results meets the regulatory requirements.

[0109] 1. Establish a simplified mechanical model of the seat

[0110] refer to figure 2 and image 3 , extract the metal pip...

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Abstract

The invention relates to the field of school bus collision safety, in particular to an optimization design method for forward lean resistant performance of a student seat of a special school bus. The method comprises the following steps of 1, building a simplified mechanical model of a seat; 2, performing optimization design of mechanical parameters of the seat; 3, performing optimization design of pipe parts; and 4, performing optimization design of forward lean resistant performance of the seat. According to the optimization design method, the modeling can be quickly and accurately carried out, the model calculation speed can be increased, and the forward lean resistant performance of the seat can be quickly and accurately optimized; and the problems of design blindness in an existing optimization design process for the forward lean resistant performance of the student seat of the school bus and repeated modeling and long calculation time during adoption of a technical means of CAE in the optimization design process are solved.

Description

technical field [0001] The invention relates to the field of school bus collision safety, in particular to an optimal design method for the anti-tilt performance of student seats on special school buses. Background technique [0002] With the development of society, the usage of school bus is increasing year by year in our country, and with it, the frequent occurrence of school bus accidents has brought indelible pain to thousands of families. Tracing it to its cause, there are reasons for the carelessness of drivers and managers, but the safety of the school bus itself is not up to standard is also one of the important reasons. [0003] As everyone knows, the seat is one of the important safety devices on the car, and the safety level of the seat is directly related to the safety of the occupants. The seats specially designed for students on the school bus are called special school bus student seats. School bus student seats are different from ordinary passenger car seats...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/17G06F30/23
Inventor 张君媛李仲玉房强倪滢滢刘茜郭强纪梦雪
Owner JILIN UNIV
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