减轻人体生物动力学反应的振动,通过座椅靠背支支,在振动环境下的坐姿中减少振动
Wei Ding1, Leizhi Wang1, Zhaobo Chen2,3
1School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, People's Republic of China.
Scientific reports
|March 19, 2024
概括
人与椅子合模型显示,头部支显著降低了振动传递 (21%) . 在不同环境中,最大限度地降低后背的硬度和阻尼是最大限度地减少振动的关键.
科学领域:
- 生物力学 生物力学
- 振动分析 振动分析
- 人体建模的人体建模
背景情况:
- 人与椅子的互动显著影响振动感知和舒适度.
- 通过不同的车身背靠接触模式量化振动传输对于人体工程学设计至关重要.
研究的目的:
- 开发和验证四度自由度 (4-DOF) 人与椅子合模型.
- 评估不同背靠支配置在减振方面的有效性.
- 为了确定背靠的最佳接触刚度和缓参数.
主要方法:
- 构建4-DOF人椅合模型.
- 使用座椅对头部转移比率 (STHT) 作为主要评估指标.
- 开发模型的实验验证.
- 统计分析 (T测试,威尔科克森匹配对签名等级) 来评估显著性.
主要成果:
- 模型模拟与实验振动减振比率非常相匹配.
- 座椅靠背支显著减少了峰值STHT (P < 0.05).
- 头部支降低了最大的振动 (21%),其次是胸部背部 (11%) 和腰部背部 (4%).
- 峰值STHT和共振频率与接触硬度正相关,与减噪负相关.
结论:
- 4DOF模型准确地预测了人椅振动动态.
- 头部支是减少座椅对头部振动传输的最有效策略.
- 最低的STHT峰值和总能量标准指导着为各种激发类型选择靠背接触特性.
相关概念视频
Normal and Tangetial Components: Problem Solving
179
Consider a man with a mass of 70 kg seated in a chair connected to a pin support through a member BC. If the man maintains an upright position, the task is to determine the horizontal and vertical reactions of the chair on the man when the member makes a 45° angle with the horizontal. At this moment, the man has a speed of 5 m/s, increasing at a rate of 1 m/s².
179
Anatomical Positions
10.1K
In anatomy, several standard anatomical positions are used as references for describing the position and orientation of different body parts. These positions help provide a common frame of reference when discussing anatomical structures. The anatomical position is the standard reference point for describing the body's position and orientation. In this position:
The body is upright, facing forward, and standing erect.
The feet are parallel and flat on the floor.
The arms are hanging by the...
The body is upright, facing forward, and standing erect.
The feet are parallel and flat on the floor.
The arms are hanging by the...
10.1K


