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Imitation Models for Testing of the Gymnastic Springboard Stiffness

机译:用于测试体操跳板刚度的仿模型

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Competition results in gymnastic vaults depend in great measure on testing and tuning of the springboard???s mechanical parameters, especially the stiffness. There are four empirical tests of the gymnastic springboard; one of them is a static test, and the three others are dynamics tests. The accuracy of the well-known springboard model (with an error up to 70 ) is not acceptable in the testing. Therefore, the purpose of this research is to develop a model for the imitation of springboard stiffness testing that should have appropriate accuracy in engineering calcula-tions. Gymnova (2012) was studied as popular equipment for gymnastic springboard vaulting. In the main load range area (1,500 ?? 3,500 N), according to the experimental testing, displace-ments of the upper board obey the linear function approximately on 99.7 . The corresponding error of the elastic solid-body model developed in this research is 3.6 , contrary to the multibody model created by Lehmann et al., where it is about 45.9 , i.e., 13 times over. The mechanical and mathematical model of gymnastic springboard that was developed in this re-search, created on the basis of an overhanging beam with a console protrusion, has quite acceptable accuracy and can be recommended for engineering calculations, virtual testing, and simulation of the technique performing gymnastic vaults.
机译:体操跳马的比赛结果在很大程度上取决于跳板的测试和调整???的机械参数,特别是刚度。体操跳板有四个实证测试;其中一个是静态测试,另外三个是动态测试。众所周知的跳板模型的准确性(误差高达70%)在测试中是不可接受的。因此,本研究的目的是开发一种模拟跳板刚度测试的模型,该模型在工程计算中应具有适当的精度。Gymnova(2012)被研究为体操跳板跳高的流行设备。在主载荷范围区域(1,500 ?? 3,500 N)下,根据实验测试,上板的位移服从线性函数约为99.7 %。本研究开发的弹性固体模型的相应误差为3.6 %,与Lehmann等人创建的多体模型相反,该模型约为45.9%,即13倍以上。在这次重新搜索中开发的体操跳板的机械和数学模型是在带有控制台突起的悬垂梁的基础上创建的,具有相当可接受的精度,可以推荐用于工程计算、虚拟测试和模拟执行体操跳马的技术。

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