目录
中文摘要
ABSTRACT
第一章 绪论 .....................................................................................................................1
§1.1 汽车工业与汽车轻量化 ...................................................................................1
§1.2 汽车轻量化的途径 ...........................................................................................2
§1.2.1 变截面技术 .............................................................................................3
§1.2.2 TRB 的优势 .............................................................................................4
§1.2.3 TRB 应用实例 .........................................................................................5
§1.3 TRB 研究现状与存在问题 ..............................................................................8
§1.3.1 TRB 研究现状 .........................................................................................8
§1.3.2 TRB 研究和应用存在的问题 .................................................................8
§1.4 本课题的提出及主要研究内容 .......................................................................9
§1.4.1 本文研究课题的提出 .............................................................................9
§1.4.2 本文主要研究工作和内容 .....................................................................9
第二章 TRB 数值模拟理论基础研究 ..........................................................................12
§2.1 板料成形数值模拟技术 .................................................................................12
§2.2 动力显式算法 .................................................................................................13
§2.2.1 动力显示求解格式 ...............................................................................14
§2.2.2 显式动力算法的优点 ...........................................................................16
§2.3 屈服准则 .........................................................................................................16
§2.3.1 屈服准则的概念 ...................................................................................16
§2.3.2 Tresca 屈服准则 ....................................................................................17
§2.3.3 Mises 屈服准则 ..................................................................................... 19
§2.3.3 各向异性屈服准则 ................................................................................20
§2.4 TRB 本构关系 ................................................................................................23
§2.5 TRB 数值模拟软件选择及其二次开发 ........................................................26
§2.5.1 Abaqus 软件简介 ................................................................................. 27
§2.5.2 TRB 数值模拟二次开发 .......................................................................27
§2.6 本章小结 .........................................................................................................34
第三章 TRB 单向拉伸数值模拟研究 ..........................................................................35
§3.1 TRB 基本几何参数及其处理方法 ................................................................35
§3.1.1 TRB 分类 ...............................................................................................35
§3.1.2 TRB 厚度过渡区的离散 .......................................................................36
§3.1.3 TRB 材料非均匀性描述与处理方法 ...................................................37
§3.2 TRB 单向拉伸数值模拟研究 ........................................................................38
§3.2.1 TRB 单向拉伸仿真模型的建立 ...........................................................39
§3.2.2 TRB 单向拉伸仿真结果 .......................................................................43
§3.3 本章小结 .........................................................................................................50
第四章 TRB 成形盒形件过程仿真及成形参数优化 ..................................................51