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Influence of Initial Length of Lap-Shoulder Belt on Occupant Dynamics-A Comparison of Sled Testing and MVMA-2D Modeling

机译：LAP肩带初始长度对乘员动力学的影响 - 橇式比较和MVMA-2D造型

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The primary purpose of this parameter study was to carefully document occupant dynamics in well-controlled sled tests for comparison with simulated responses from the MVMA-2D analytical model. The test involved a Part 572 dummy exposed to a frontal deceleration while on a bucket seat and restrained by a lap-shoulder belt system. The length of belt webbing was incrementally increased from a snug configuration by as much as 30 cm. The addition of webbing increased the forward excursion, velocity, and acceleration of the head, chest, and hip without affecting the peak tension in the belt segments of the restraint system. Belt tension was identified as a poor measure of the horizontal load on the chest due to significant reaction forces in the lateral and vertical direction at the belt anchorages. The advanced belt system subprogram of the MVMA-2D model had to be modified to account for the influence of the lateral anchorage location on belt tensions and the planar restraint of the occupant. Although reasonable agreement was achieved in simulating the occupant dynamics, belt loads were dissimilar. The MVMA-2D model is judged to be a sophisticated, delicate tool requiring additional study and refinement.

机译：该参数研究的主要目的是仔细记录良好控制的滑雪检测中的乘员动态，以便与来自MVMA-2D分析模型的模拟响应进行比较。该测试涉及在铲斗座椅上暴露于正面减速的部分572伪，并且由膝肩带系统束缚。皮带织带的长度从舒适构造逐渐增加多达30厘米。织带的增加增加了头部，胸部和臀部的前进偏移，速度和加速度，而不会影响约束系统的带段中的峰值张力。皮带张力被鉴定为胸部水平载荷的差，导致胸部的横向和垂直方向上的显着反作用力的衡量标准。必须修改MVMA-2D模型的高级带系统子程序，以解释侧锚定位置对皮带张力的影响和乘员的平面限制。尽管在模拟乘员动态方面取得了合理的协议，但皮带载荷是不同的。 MVMA-2D模型被判断为一种精致，精致的工具，需要额外的研究和改进。

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《Stapp Car Crash Conference》|2009年||共40页
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David C. Viano; Clyde C. Culver; Bert C. Prisk;
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4. Influence of Initial Length of Lap-Shoulder Belt on Occupant Dynamics-A Comparison of Sled Testing and MVMA-2D Modeling [C] . David C. Viano, Clyde C. Culver, Bert C. Prisk Stapp Car Crash Conference . 2009

机译：LAP肩带初始长度对乘员动力学的影响 - 橇式比较和MVMA-2D造型
5. Effects of seat and seat-belt design on car occupant response in frontal and rear impacts: A study combining mechanical and mathematical modelling. [D] . Nilson, Gert. 1994

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Influence of Initial Length of Lap-Shoulder Belt on Occupant Dynamics-A Comparison of Sled Testing and MVMA-2D Modeling

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