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首页> 外文期刊>Journal of Mechanical Science and Technology >The reliability of finite element analysis results of the low impact test in predicting the energy absorption performance of thin-walled structures
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The reliability of finite element analysis results of the low impact test in predicting the energy absorption performance of thin-walled structures

机译：低冲击试验有限元分析结果在预测薄壁结构吸能性能中的可靠性

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The application of dual phase steels (DPS) such as DP600 in the form of thin-walled structure in automotive components is being continuously increased as vehicle designers utilize modern steel grades and low weight structures to improve structural performance, make automotive light and reinforce crash performance. Preventing cost enhancement of broad investigations in this area can be gained by using computers in structural analysis in order to substitute lots of experiments with finite element analysis (FEA). Nevertheless, it necessitates to be certified that selected method including element type and solution methodology is capable of predicting real condition. In this paper, numerical and experimental studies are done to specify the effect of element type selection and solution methodology on the results of finite element analysis in order to investigate the energy absorption behavior of a DP600 thin-walled structure with three different geometries under a low impact loading. The outcomes indicated the combination of implicit method and solid elements is in better agreement with the experiments. In addition, using a combination of shell element types with implicit method reduces the time of simulation remarkably, although the error of results compared to the experiments increased to some extent.
机译：随着汽车设计人员利用现代钢种和轻质结构来改善结构性能，使汽车轻量化并增强碰撞性能，随着诸如薄壁结构形式的DP600等双相钢（DPS）在汽车零部件中的应用正在不断增加。 。通过在结构分析中使用计算机，从而用有限元分析（FEA）代替许多实验，可以防止在这一领域进行广泛的研究，从而可以防止成本增加。但是，必须证明所选方法（包括元素类型和解决方案方法）能够预测实际情况。本文通过数值和实验研究来说明元素类型选择和求解方法对有限元分析结果的影响，以便研究在低压力下具有三种不同几何形状的DP600薄壁结构的能量吸收行为。冲击负荷。结果表明隐式方法和实体元素的组合与实验更好地吻合。此外，将壳单元类型与隐式方法结合使用可显着减少仿真时间，尽管与实验相比结果的误差有所增加。

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