Finite element model of 30-degree trunk angle national sign six-year-old child passenger and construction method and application thereof

A construction method and finite element technology, applied in the field of computer numerical simulation and human injury biomechanics research, can solve the problems of single and non-adjustable sitting angle, and achieve the effect of high degree of biological simulation

Pending Publication Date: 2021-11-12
TIANJIN UNIV OF SCI & TECH
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Problems solved by technology

[0004] In order to solve the deficiencies in the prior art, the object of the present invention is to provide a method for constructing a finite element model of a six-year-old child occupant with a 30° torso angle. Problems with a single and non-adjustable sitting angle in the metamodel, including:

Method used

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  • Finite element model of 30-degree trunk angle national sign six-year-old child passenger and construction method and application thereof
  • Finite element model of 30-degree trunk angle national sign six-year-old child passenger and construction method and application thereof
  • Finite element model of 30-degree trunk angle national sign six-year-old child passenger and construction method and application thereof

Examples

Experimental program
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Effect test

Embodiment

[0064] Study on Head Injury of Six-year-old Chinese Occupant with 30° Torso Angle Based on 50% Overlap MPDB Crash Test

[0065] (1) Simulation model establishment

[0066] The child safety seat is connected to the rear seat of the car through the tide command in the Pam-crash software, and the 30° torso angle is a Chinese sign. The six-year-old child occupant is restrained in the child seat by the adult seat belt, and the seat belt passes through the rear seat The tide command was fixed. The child safety seat establishes surface-to-surface contact with the rear seat of the car, the contact thickness is 0.1mm, the coefficient of static friction is 0.15, and the coefficient of dynamic friction is 0.2; the torso angle of 30° is the Chinese human sign. The seat establishes surface-to-surface contact, the contact thickness is 0.01mm, the static friction coefficient is 0.15, and the dynamic friction coefficient is 0.2. Load the initial velocity, linear deceleration curve and rotat...

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Abstract

The invention discloses a method for constructing a finite element model of a 30-degree trunk angle national sign six-year-old child passenger. The method comprises the steps: calculating the kinematics parameters and stress-strain distribution conditions of a six-year-old child passenger in a specific sitting posture through units and nodes with mechanical properties, so as to judge the injury condition of the six-year-old child passenger; and a basis is provided for studying the injury mechanism of the six-year-old child passengers in different sitting postures and the protection effect of a child restraint system. According to the building method and application of the finite element model of the six-year-old child passenger with the 30-degree trunk angle, the postures of the six-year-old child passenger are enriched, and technical support is provided for further research on the injury mechanism of the six-year-old child passenger and the applicability of a safety restraint system.

Description

technical field [0001] The invention belongs to the technical field of computer numerical simulation and human injury biomechanics research, and relates to a method for constructing a finite element model of a six-year-old child occupant with a 30° torso angle and a method for researching the injury mechanism. Background technique [0002] Injury mechanism is a description of the principles and physiological changes that lead to human functional impairment, and the study of injury mechanism is the basis for understanding and learning the discipline of injury biomechanics. In order to fully understand the mechanism of human injury and explore ways to reduce or eliminate possible damage to the structure and function of human tissue, domestic and foreign scholars have conducted a lot of research on this. Common biomechanical research methods mainly include cadaver experiments, dummy models, and finite element methods. model etc. Due to the constraints of social ethics and laws...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16H50/50G16H50/30G16H10/60G06F30/23G06F111/10G06F119/14
CPCG16H50/50G16H50/30G16H10/60G06F30/23G06F2111/10G06F2119/14
Inventor 李海岩王彦鑫崔世海吕文乐贺丽娟
Owner TIANJIN UNIV OF SCI & TECH
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