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首页> 外文期刊>International journal of applied mechanics >Low-Velocity Flexural Impact Analyses of Functionally Graded Sandwich Beams Using Finite Element Modeling
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Low-Velocity Flexural Impact Analyses of Functionally Graded Sandwich Beams Using Finite Element Modeling

机译：使用有限元建模功能渐进式夹层梁的低速弯曲冲击分析

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摘要

A comparative numerical investigation on low-velocity impact response of a metal/ceramic functionally graded sandwich beam (FGSB) is performed by the commercial finite element (FE) software, LS-DYNAR (R). The mechanical properties of the FG core are represented by a power-law depending on the volume fractions of the constituents. The effective elastic properties and elastoplastic behavior of the FG core are defined by Mori-Tanaka method and TTO (Tamura-Tomota-Ozawa) model, respectively. The effects of number of layers, compositional gradient, impact energy, and impact side are investigated. The simulation results indicated that both number of layers and compositional gradient have almost no effect on the kinetic energy history. In other respects, the compositional gradient exhibits a considerable effect, and the number of layers has a minor effect on the contact force history. Increasing impact energy does not have a considerable effect in terms of number of layers whereas it exhibits a significant effect in terms of compositional gradient on the percentage difference between the peak contact forces. Finally, the impact side does not influence the contact force history for all number of layers and compositional gradients.
机译：金属/陶瓷功能梯度夹层（FGSB）的低速冲击响应的比较数值研究由商业有限元（FE）软件，LS-DYNAR（R）进行。根据成分的体积分数，FG芯的机械性能由动力量表示。 FG芯的有效弹性性能和弹性塑料行为分别由Mori-Tanaka方法和TTO（Tamura-Tomota-Ozawa）模型定义。研究了层数，组成梯度，冲击能和冲击侧的影响。仿真结果表明，两层层和组成梯度几乎没有对动能历史的影响。在其他方面，组成梯度表现出相当大的效果，并且层数对接触力历史具有轻微影响。由于层数，增加的冲击能量对层数没有相当大的效果，而在组成梯度方面对峰接触力之间的百分比差异表现出显着影响。最后，冲击侧不会影响所有数量的层和组成梯度的接触力历史。

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