A pregnant womans body is a very sophisticated dynamic system that is sensitive to whole-body vibrations in a sitting posture. While much effort has been devoted to vibration effects on non-pregnant seated persons, little research has been devoted to the biodynamic responses of seated pregnant women exposed to vertical vibrations, especially in driving conditions. In this study a thorough survey of lumped-parameter models for non-pregnant seated persons is implemented. According to the literature the mathematical models adequate for representing the increase in mass due to pregnancy are proposed and evaluated systematically. On the basis of an analytical study and experimental validation, the six-degree-of-freedom model modified from the non-linear model proposed by Muksian and Nash is recommended. In addition, the recommended pregnant model is further integrated with two-dimensional half-car and three dimensional full-car models to assess the responses of pregnant drivers or passengers exposed to vertical vibrations due to road uneveness. It is believed that the study presented in this report provides a profound understanding of biodynamic responses of seated pregnant women and that it may offer vehicle engineers a good reference in the design of vehicle suspension systems.


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    Title :

    Biodynamic responses of seated pregnant subjects exposed to vertical vibrations in driving conditions


    Additional title:

    Biodynamisches Verhalten von sitzenden schwangeren Versuchspersonen, die während der Fahrzeugführung Vertikalschwingungen ausgesetzt sind


    Contributors:

    Published in:

    Vehicle System Dynamics ; 45 , 11 ; 1017-1049


    Publication date :

    2007


    Size :

    33 Seiten, 13 Bilder, 10 Tabellen, 54 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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