第 1 章 金屬材料動(dòng)態(tài)失效研究概述··································································.1
1.1 研究背景··························································································.1
1.2 研究動(dòng)態(tài)··························································································.3
1.2.1 金屬材料動(dòng)態(tài)本構(gòu)關(guān)系·······························································.3
1.2.2 金屬材料高壓狀態(tài)方程·······························································.7
1.3 理論基礎(chǔ)··························································································10
1.3.1 金屬材料動(dòng)態(tài)損傷與失效····························································10
1.3.2 金屬材料強(qiáng)動(dòng)載荷下的層裂·························································18
1.4 本書工作··························································································22
第 2 章 金屬材料偏量本構(gòu)模型建立與模型參數(shù)識(shí)別·············································25
2.1 修正 JOHNSON-COOK 本構(gòu)模型·······························································25
2.1.1 Johnson-Cook 本構(gòu)模型·······························································25
2.1.2 力熱能量密度等效理論·······························································26
2.1.3 修正 Johnson-Cook 本構(gòu)模型························································29
2.2 TI-6AL-4V 合金本構(gòu)模型······································································30
2.3 模型參數(shù)敏感度全局分析與識(shí)別方法······················································34
2.3.1 參數(shù)敏感度分析方法··································································34
2.3.2 模型參數(shù)識(shí)別方法·····································································35
2.4 動(dòng)態(tài)本構(gòu)模型驗(yàn)證··············································································37
2.4.1 修正 Johnson-Cook 本構(gòu)模型驗(yàn)證··················································38
2.4.2 Ti-6Al-4V 合金兩相本構(gòu)模型驗(yàn)證 ·················································47
2.5 本章小結(jié)··························································································53
第 3 章 高壓狀態(tài)方程的確定與應(yīng)用··································································55
3.1 多尺度沖擊技術(shù)（MSST）···································································55
3.1.1 MSST 理論 ··············································································56
3.1.2 沖擊波穩(wěn)定性控制·····································································57
3.2 理論分析體系····················································································58
3.2.1 Hugoniot 壓力（PH）與內(nèi)能（EH） ···············································58
3.2.2 冷壓（Pc）與冷能（Ec） ····························································59
3.2.3 Grüneisen 系數(shù)（γ）···································································60
3.2.4 熔化溫度（Tm）········································································62
3.2.5 Mie-Grüneisen 狀態(tài)方程······························································62
3.3 MSST 計(jì)算模型 ·················································································63
3.4 結(jié)果與討論·······················································································64
3.4.1 沖擊 Hugoniot 線（PH、EH） ·······················································64
3.4.2 冷壓與冷能（PC、EC） ······························································68
3.4.3 Grüneisen 系數(shù)（γ）···································································69
3.4.4 熔化溫度（Tm）········································································71
3.4.5 Mie-Grüneisen 狀態(tài)方程······························································72
3.5 本章小結(jié)··························································································74
第4章 多尺度分析方法應(yīng)用——金屬材料高應(yīng)變率下動(dòng)態(tài)失效機(jī)制分子動(dòng)力學(xué)
模擬·································································································75
4.1 孔洞成核與生長(zhǎng)模型···········································································75
4.2 分子動(dòng)力學(xué)模型與分析方法··································································77
4.2.1 分子動(dòng)力學(xué)模型········································································77
4.2.2 分析方法·················································································77
4.2.3 勢(shì)函數(shù)驗(yàn)證··············································································78
4.3 結(jié)果與討論·······················································································79
4.3.1 溫度對(duì)拉應(yīng)力的影響··································································79
4.3.2 溫度對(duì)孔洞體積分?jǐn)?shù)的影響·························································81
4.3.3 位錯(cuò)分析（DXA） ····································································86
4.3.4 徑向分布函數(shù)分析（RDF）·························································88
4.3.5 共鄰分析（CNA） ····································································89
4.3.6 溫度對(duì) NAG 模型參數(shù)影響··························································93
4.4 本章小結(jié)··························································································95
第 5 章 多尺度分析方法應(yīng)用——金屬材料強(qiáng)動(dòng)載荷下層裂行為與機(jī)制分子
動(dòng)力學(xué)模擬························································································97
5.1 分子動(dòng)力學(xué)模型與分析方法··································································98
金屬材料動(dòng)態(tài)失效理論與多尺度分析方法 X
5.1.1 分子動(dòng)力學(xué)模型········································································98
5.1.2 分析方法·················································································99
5.2 結(jié)果與討論····················································································.100
5.2.1 層裂過(guò)程中波形演化·······························································.102
5.2.2 層裂自由面速度曲線演化·························································.106
5.2.3 層裂強(qiáng)度分析········································································.109
5.2.4 層裂特性分析········································································.112
5.2.5 溫度對(duì)經(jīng)典層裂的影響····························································.117
5.2.6 溫度對(duì)微層裂的影響·······························································.124
5.2.7 自由面速度曲線與損傷演化······················································.131
5.3 本章小結(jié)·······················································································.134
第 6 章 多尺度分析方法應(yīng)用——?jiǎng)討B(tài)本構(gòu)模型在結(jié)構(gòu)動(dòng)態(tài)失效行為數(shù)值模擬·········.136
6.1 鉭層裂自由面速度曲線特征多尺度模擬研究··········································.137
6.1.1 計(jì)算模型··············································································.138
6.1.2 模型參數(shù)··············································································.139
6.1.3 模型參數(shù)驗(yàn)證········································································.141
6.1.4 結(jié)果與分析···········································································.143
6.2 鉭靶板在高速?gòu)椡枳矒粝碌膿p傷行為模擬研究·······································.150
6.2.1 計(jì)算模型··············································································.151
6.2.2 模型參數(shù)··············································································.152
6.2.3 結(jié)果與分析···········································································.153
6.3 爆炸載荷下金屬管道動(dòng)態(tài)響應(yīng)模擬研究················································.162
6.3.1 計(jì)算模型··············································································.163
6.3.2 模型參數(shù)··············································································.164
6.3.3 結(jié)果與分析···········································································.165
6.4 本章小結(jié)·······················································································.172
第 7 章 研究小結(jié)與展望 ··············································································.174
7.1 小結(jié)·····························································································.174
7.2 展望·····························································································.177
參考文獻(xiàn) ···································································································.179