基于ANSYS/LS-DYNA的弹带挤进过程仿真

摘要

The finite element model of one large-caliber artil ery’ s engraving process is established based on the ANSYS/LS-DY-NA software, and the engraving resistance with engraving displacement changes is particularly studied in the engraving process. By exporting some graphics at critical, the whole belt deformation pattern of the engraving process is revealed and by the curves of some analytic model elements, the personal view on the erosion of rifling is put forward. Based on D'Alembert principle, the curves of accelerate and velocity and matlab are used to get the engraving resistance curve. By comparison with theoretical curve, the correctness of the calculation result is verified and ANSYS / LS-DYNA is showed to be a good tool for the study of engraving process.%基于ANSYS/LS-DYNA瞬态动力学分析软件，建立了某火炮挤进过程的有限元模型，重点研究挤进过程中挤进阻力随挤进行程的变化。通过输出关键时刻的图形，展示了整个挤进过程中弹带的变形规律，然后通过分析模型中某些单元的应力曲线，对膛线起始部的磨损提出了看法。利用仿真获得的加速度曲线和速度曲线，基于达朗贝尔原理，利用matlab对数据进行处理，得到了挤进阻力曲线，并与理论所得阻力曲线进行了对比，表明ANSYS/LS-DYNA是研究挤进过程的一个很好的工具。