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首页> 外文期刊>International Journal of Engineering Research and Applications >Development of a Model for the Simulation of ROPS Tests on Agricultural Tractors Cabin: Numerical Models and Experimental Verification
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Development of a Model for the Simulation of ROPS Tests on Agricultural Tractors Cabin: Numerical Models and Experimental Verification

机译：农业拖拉机驾驶室ROPS测试模拟模型的开发：数值模型和实验验证

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摘要

It is here proposed a methodology for simulation of ROPS tests (ROPS = Roll Over Protective Structure) of agricultural tractor cabins. The work is based on the resolution of this problem through the use of the finite element method. In order to limit the number of nodes of the model and thus to speed up the resolution,a twodimensional finite elements model has been chosen. The method presented here solves with relative ease, even very complex structures. There are also simplest methods in literature where specially made software is based on the finite element method for simulating approval tests on ROPS structures. In this case,codes developed just for this purposeare available, and therefore very simple to use and characterized by a high speed of preparation of the model following the definition of a small number of parameters. On the other side these are codes designed for structures having a specific geometric shape and in which the user is not free to set all the parameters existing in commercial software for the structural calculation, and are not very suitable in case of complex or not conventional structures. The methodology proposed by the authors instead, although not automated, allows simulating any type of structure in acceptable times. The results were validated by full scale experimental tests. Through the interpretation of the results it is possible to identify which areais the most critical for the structure and evaluate any change, something which is not easy to do through expensive tests.
机译：这里提出一种用于模拟农用拖拉机驾驶室的ROPS测试（ROPS =防滚翻保护结构）的方法。这项工作是通过使用有限元方法解决此问题的。为了限制模型的节点数量，从而加快分辨率，选择了二维有限元模型。这里介绍的方法可以相对轻松地解决，甚至是非常复杂的结构。文献中也有最简单的方法，其中专门制作的软件基于有限元方法来模拟ROPS结构的批准测试。在这种情况下，可以使用为此目的而开发的代码，因此使用起来非常简单，并且其特点是遵循少量参数的定义即可快速准备模型。另一方面，这些代码是为具有特定几何形状的结构设计的，并且用户无法自由设置商业软件中存在的用于结构计算的所有参数，并且不适用于复杂或非常规结构的情况。作者提出的方法虽然不是自动的，但可以在可接受的时间内模拟任何类型的结构。通过全面的实验测试验证了结果。通过对结果的解释，可以确定哪个区域对结构最关键，并评估任何更改，而通过昂贵的测试则很难做到这一点。

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