• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Development and validation of simulation software for RTM and VARTM processes.
【24h】

Development and validation of simulation software for RTM and VARTM processes.

机译：开发和验证用于RTM和VARTM流程的仿真软件。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Liquid Composite Moulding (LCM) identifies a group of composite manufacturing processes which have become conventional choices in industry due to their versatility and economic advantages. Resin Transfer Moulding (RTM) and Vacuum Assisted Resin Transfer Moulding (VARTM) have established themselves as the two main LCM options.;The RTM simulation software is capable of simulating flat moulds of any shape and the user can define any positions for the multiple inlet ports and multiple outlet vents. The user controls all the critical parameters for the process such as permeability, viscosity and porosity. Impermeable walls can be inserted in any position in order to simulate complex geometries. The distribution of resin pressure in the cavity can be seen in color scale as well as in actual numbers along with the fill time. Validation of the software was performed by running several RTM experiments and comparing the experimental and simulated flow patterns, as well as the fill times.;The VARTM simulation software is developed in 1D where the important parameters such as permeability and porosity behave as variables. The governing equations are developed and discretized. The 1D solution is compared visually and numerically other results obtained from a creditable source.;In this thesis, a Finite Difference Method (FDM) approach is developed and implemented for predicting the flow of resin during the filling stage of RTM and VARTM. For RTM filling simulation, the discretized partial differential equations are stored in a matrix and solved using a standard numerical solution approach of Lower-Upper Decomposition. For VARTM filling simulation, solutions are obtained using an iterative method. These two different approaches were used as a result of physical differences between the two manufacturing processes, and also for investigation purposes.
机译：液体复合材料成型（LCM）标识了一组复合材料制造工艺，由于其多功能性和经济优势，它们已成为工业上的常规选择。树脂传递模塑（RTM）和真空辅助树脂传递模塑（VARTM）已成为两个主要的LCM选项。; RTM模拟软件能够模拟任何形状的扁平模具，用户可以为多入口定义任意位置端口和多个出口孔。用户控制该过程的所有关键参数，例如渗透率，粘度和孔隙率。防渗墙可以插入任何位置，以模拟复杂的几何形状。模腔中树脂压力的分布可以从色标，实际数量以及填充时间中看到。通过运行多个RTM实验并比较实验和模拟流动模式以及填充时间来进行软件验证。VARTM模拟软件是在一维中开发的，其中重要参数（例如渗透率和孔隙率）是变量。制定并离散化了控制方程。一维解决方案在视觉上和数字上都可以从值得信赖的来源获得的其他结果进行比较。；本文开发并实施了一种有限差分法（FDM），用于预测RTM和VARTM填充阶段的树脂流量。对于RTM填充模拟，离散化的偏微分方程存储在矩阵中，并使用“下-上分解”的标准数值解法进行求解。对于VARTM填充模拟，使用迭代方法获得解决方案。由于两种制造工艺之间存在物理差异，因此使用了这两种不同的方法，也用于调查目的。

著录项

  • 作者

    Kim, Peter Jong Ho.;

  • 作者单位

    University of Ottawa (Canada).;

  • 授予单位 University of Ottawa (Canada).;
  • 学科 Engineering Mechanical.
  • 学位 M.A.Sc.
  • 年度 2010
  • 页码 156 p.
  • 总页数 156
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-17 11:36:56

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号