复合材料结构力学分析CAE软件现状

复合材料结构分析软件是用以分析、设计复合材料结构的重要工具,常用的复合材料结构分析软件包括基于CAD软件发展而来的复合材料分析工具、通用有限元软件自带复合材料分析工具和以Digimat等为代表的专业化复合材料结构分析软件。本文对常用的复合材料分析软件进行了综述,介绍其主要功能,从学术、应用等多方面探讨相关产品的优点及不足;论述了专业化复合材料结构分析软件的特点及功能;分析了复合材料结构分析软件的现状和发展趋势;探讨了复合材料结构力学分析CAE软件在国产化方面所需进一步解决的问题。

Current status of CAE software for composite structural analysis

In the ocean drilling,the bending of the pipes has special effects on the vibration and motion of the drill string.In order to get the effects of the bending of the riser on the vibration of drill string,the nonlinear finite element software is used for drilling deep Wells in the South China Sea,and the drilling value calculation model of the whole well is established.The influence of the bending of the drill string on the vibration of drill string is studied.Research shows that:the bending of the riser increases the vibration of the drill string.The increase of drill string vibration can result in the increase of drilling energy consumption,the decrease of the cutting ability of the drill bit and the acceleration of drilling column fatigue.The contact force between the drill string and the riser increases rapidly when the riser bending reaches a critical value.The larger the hook load,the larger the hook load variation that is caused by the bending of the riser.The deeper the well,the smaller the impact of the riser bending on the maximum bending moment of the drill string,and the smaller the impact on the drill's cutting ability.