Whole-body biodynamics and modelling

全身生物动力学和建模

• 批准号: 227096-2010
• 负责人: Boileau, PaulÉmile
• 金额: $ 1.75万
• 依托单位: Concordia University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=510223
• 关键词: Whole; body; biodynamics; modelling

The characterization of the biodynamic response of human subjects exposed to whole-body vibration is widely used to enhance our knowledge of the adverse vibration health effects and to assist in the design of vehicle seats. While the biodynamic response of the body has ben most widely characterized under single-axis vibration using the driving-point mechanical impedance, apparent mass and seat-to-head transmissibility responses for subjects seated on a rigid seat, there is a need to better understand how the multi-axes vibration encountered in vehicles is transmitted to different parts of the body to provide an understanding of the injury mechanisms involved. Furthermore, the biodynamic responses need to be defined on typical suspension or visco-elastic seats which are more representative of those used in vehicles. This program of work is aimed at characterizing the biodynamic responses of the human body seated on visco-elastic surfaces and exposed to multiple-axes whole-body vibration representative of those encountered in different types of road, off-road and industrial vehicles. These studies will involve laboratory investigations in which groups of male and female subjects within different mass ranges will be submitted to multiple axes and single-axis vibration using a 6 degree-of-freedom whole-body vibration simulator. The measured responses, including variations in seated postures, will be statistically analyzed to establish reliable target data for the seated human body exposed to various types of vehicle vibration. On the basis of the measured responses, biodynamic models of the seated body will be developed to build occupant-seat models for design and analysis of suspension and visco-elastic seats. Validation of these models will be established by comparing the predicted occupant-seat vibration transmissibility responses with those measured in the laboratory with real seats and subjects under various vibration and postural conditions. This program of work should generate new understanding on the feasibility of applying laboratory-based models to reliably represent the seat-occupant responses under typical vehicle vibration environments.

人体受试者暴露于全身振动的生物动力学响应的表征被广泛用于提高我们对振动对健康的不利影响的认识，并有助于车辆座椅的设计。虽然身体的生物动力学响应已被最广泛地表征在单轴振动下，使用驱动点机械阻抗、表观质量和坐在刚性座椅上的受试者的座椅到头部的传递率响应，但需要更好地理解车辆中遇到的多轴振动如何传递到身体的不同部位，以提供对所涉及的损伤机制的理解。此外，需要在典型的悬架或粘弹性座椅上定义生物动力学响应，这些座椅更能代表车辆中使用的座椅。该工作计划旨在表征人体坐在粘弹性表面上并暴露于多轴全身振动的生物动力学响应，这些振动代表了不同类型的公路，越野和工业车辆中遇到的振动。这些研究将涉及实验室研究，其中不同质量范围内的男性和女性受试者组将使用6自由度全身振动模拟器接受多轴和单轴振动。测量的响应，包括坐姿的变化，将进行统计分析，以建立可靠的目标数据，为坐在人体暴露于各种类型的车辆振动。根据所测得的反应，生物动力学模型的坐着身体将建立乘员座椅模型的设计和分析的悬浮和粘弹性座椅。这些模型的验证将通过比较预测的乘员座椅振动传递率响应与在实验室中用真实的座椅和受试者在各种振动和姿势条件下测量的响应来建立。这项工作计划应产生新的理解的可行性，应用实验室为基础的模型，可靠地代表典型的车辆振动环境下的座椅乘员的反应。