基于ABAQUS的智能有限元分析前处理技术研究

发布时间：2018-02-04 14:05

本文关键词： ABAQUS 有限元分析前处理案例推理参数化有限元分析　出处：《山东大学》2017年硕士论文　论文类型：学位论文

【摘要】：由于有限元分析具有独特的计算仿真优势,因此越来越多的企业应用它来计算和评估产品的性能是否符合实际要求,进而优化产品的设计。但在有限元分析过程的前处理阶段存在着前处理技术难以被人掌握、大量重复劳动、积累的有限元分析前处理知识没有得到利用的问题。若将积累的前处理知识表示成案例,应用案例推理技术将过去的前处理知识进行充分利用,再结合参数化有限元分析技术,可达到分析人员输入所需参数或有限元分析案例中的参数即可进行有限元分析的目的。这样不仅可帮助分析人员掌握前处理技术,也可避免分析人员重复进行前处理分析。因此本文基于ABAQUS研究了有限元分析案例推理和参数化有限元分析技术,并设计了基于ABAQUS的智能有限元分析前处理系统,实现了相应的功能,对于节省有限元分析时间,提高有限元分析效率具有重要的实际意义。本文首先构建了有限元分析案例库。定义了有限元分析案例中的内容,基于框架表示方法表示了有限元分析案例,并对案例库按分析类型进行了分类,为进行有限元分析案例的检索奠定了基础。其次,研究了有限元分析案例检索方法。建立了有限元分析案例属性的选取原则,计算了有限元分析案例属性相似度和属性权重,基于近邻法完成了有限元分析案例整体相似度的计算。再次,设计了参数化有限元分析模板,并设计了相应的模型几何建模库和有限元分析特征定义模型库。最后,设计了基于ABAQUS的智能有限元分析前处理系统,并实现了有限元分析案例重用和参数化有限元分析功能。通过设计的实验评估了系统,证明系统能够提高有限元分析效率。
[Abstract]:Due to the finite element simulation analysis has unique advantages, so more and more enterprises use it to calculate and evaluate the performance of the product meets the actual requirements, and to optimize the design of the product. But before the processing stage in the process of the finite element analysis of the existence of pre treatment technology is difficult to be mastered, a lot of repetitive work, finite element accumulation the analysis of processing knowledge not use. If the accumulation of knowledge representation before processing the case, application of case based reasoning technology will make full use of the knowledge of past before treatment, combined with parametric finite element analysis technology, can achieve the analysis of parameters can be input parameters required by personnel or finite element analysis in the case of CO. The purpose of element analysis. This analysis not only can help staff to master pretreatment technology, which can avoid the repeated analysis of personnel pretreatment analysis. So this paper based on ABAQU S study on the finite element analysis of case based reasoning and parametric finite element analysis technology, and design a system of intelligent processing of finite element analysis based on the ABAQUS, realizes the corresponding function for finite element analysis, save time, has important practical significance to improve the efficiency of finite element analysis. Firstly, the finite element analysis of case base the definition of the finite element analysis. In the case of content representation framework based on the finite element analysis of case representation and case base, according to analysis of the types of classification, which laid the foundation for the retrieval of finite element analysis of case study. Secondly, the finite element analysis of case retrieval method. The selection principle of the finite element analysis of case finite element analysis of case attribute, attribute similarity and attribute weights were calculated based on the nearest neighbor method to complete the calculation of the finite element analysis of the overall similarity case. Thirdly, design parameters Finite element analysis of the template, and designs the model of geometric modeling library and the corresponding finite element analysis feature definition model library. Finally, the system design of intelligent processing of finite element analysis of ABAQUS based on finite element analysis, and implements case reuse and parametric finite element analysis. Through the design of experimental evaluation system, prove the system can improve the efficiency of finite element analysis.

【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB115

【相似文献】