相关实验视频

Updated: Jan 8, 2026

A Low Cost Setup for Behavioral Audiometry in Rodents

A Low Cost Setup for Behavioral Audiometry in Rodents

Published on: October 16, 2012

对冲动噪声传播到人类头部的数值研究

X Gary Tan¹, YungChia Chen¹, Amit Bagchi¹

¹U.S. Naval Research Laboratory, Washington, DC 20375, U.S.

Journal of biomechanical engineering

|December 13, 2025

概括

保护战士免受冲动噪声的影响,需要考虑骨传导,而不仅仅是空气传导. 有限元模型模拟了内耳上的噪声影响,揭示了传输差异和基底膜反应.

科学领域:

生物医学工程生物医学工程
声学声学在声学方面
计算力学计算力学计算力学

背景情况:

来自重型武器的冲动噪声对战斗机构成风险.
传统的听力保护专注于空气导通,可能忽视其他噪声通路.

研究的目的:

开发和利用人类头部和耳朵的有限元素 (FE) 模型来模拟对冲动噪声的生物力学反应.
区分空气和骨传导通道,以便将冲动噪声传输到内耳.

主要方法:

使用MRI数据和已发表的材料模型创建了人类头部和耳朵的FE模型.
模拟的冲动噪声加载条件,代表武器发射和爆炸.
分析了内耳的动态行为和基底膜对头骨振动的反应.

主要成果:

模拟结果表明,空气和骨传导通道之间存在明显的声音传输差异.
用实验数据验证大脑和内耳中计算预测的压力反应.
建立了冲动噪声,头骨振动和基底膜反应之间的关系.

结论:

新的方法将多种冲动噪声传输模式 (空气和骨传导) 分离并检查到内耳.
调查结果强调,需要评估和减轻用于战斗机保护的耳道以外的替代噪声传播模式.

更多相关视频

Stochastic Noise Application for the Assessment of Medial Vestibular Nucleus Neuron Sensitivity In Vitro

Stochastic Noise Application for the Assessment of Medial Vestibular Nucleus Neuron Sensitivity In Vitro

Published on: August 28, 2019

Infant Auditory Processing and Event-related Brain Oscillations

Infant Auditory Processing and Event-related Brain Oscillations

Published on: July 1, 2015

相关概念视频

Impulse

Impulse

According to Newton’s second law of motion, the rate of change of the momentum of an object is the net external force acting on it. The total change in momentum between two timepoints thus depends on both the external force acting on it and the time over which it acts. Describing this mathematically, the total change of an object’s motion is proportional to the force vector and the time over which it is applied. This product is called impulse.
Additionally, it can be shown that the...