ANSYS/Workbench显式动力学数值仿真

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ANSYS/Workbench显式动力学数值仿真
ANSYS/Workbench显式动力学数值仿真
ANSYS/Workbench显式动力学数值仿真

ANSYS/Workbench显式动力学数值仿真

Brand: 化学工业出版社 Sold By: EM China
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ANSYS/Workbench显式动力学数值仿真

ANSYS/Workbench显式动力学数值仿真

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内容简介

数值模拟技术是解决冲击、爆炸等非线性问题的有...

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内容简介

数值模拟技术是解决冲击、爆炸等非线性问题的有力工具。本书主要介绍了ANSYS/Workbench平台中的显式动力学模块及其在工程中的具体应用。全书共9章，系统介绍了Workbench平台的计算流程和显式动力学算法、几何建模、材料定义、网格划分、接触设置、计算条件设置、后处理等，并且通过实例详细介绍了常见的高速冲击碰撞、爆炸、跌落、优化设计等仿真过程。书中包含从建模到计算结果分析的全部操作过程，以便读者能够结合应用实例，快速掌握Workbench平台的数值建模和求解流程，加深对显式动力学数值仿真的理解。 本书适合理工科院校本科高年级学生和研究生作为显式动力学、有限元等课程的学习参考资料，也可为从事相关专业的工程技术人员和研究人员提供参考。

作者简介

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目　　录
第1章ANSYS/Workbench软件基础001 1.1ANSYS/Workbench简介 001 1.2Workbench平台界面 002 1.2.1Mainmenu bar主菜单栏 003 1.2.2Basic bar基本工具栏 003 1.2.3Toolbox工具箱 003 1.2.4Project Schematic项目简图 004 1.2.5Message及Progress信息 004 1.3ANSYS Workbench的文件管理 005 1.4Workbench中显式动力学模块 006 1.4.1Explicit Dynamics模块 007 1.4.2Autodyn模块 008 1.4.3LS-DYNA模块 009 1.4.4三种模块比较 010 本章小结 012 第2章显式动力学软件介绍013 2.1隐式与显式算法 014 2.1.1隐式算法 014 2.1.2显式算法 015 2.1.3动力学网格算法介绍 016 2.1.4隐式与显式分析比较 017 2.2几何建模 019 2.2.1DesignModeler建模平台 019 2.2.2DesignModeler建模实例 021 2.2.3SpaceClaim建模平台 024 2.2.4SpaceClaim建模及几何清理实例 026 2.2.5外部几何模型导入 029 2.3材料定义与加载 030 2.3.1Engineering Data模块简介 030 2.3.2显式动力学材料基础 035 2.3.3显式动力学材料模型 037 2.4显式动力学网格划分 047 2.4.1Mesh模块网格划分 048 2.4.2几何分割后进行网格划分 054 2.4.3SpaceClaim网格划分 056 2.4.4ICEM网格划分 058 2.4.5外部网格划分软件导入 059 本章小结 061 第3章Explicit Dynamics模块设置062 3.1显式动力学中接触设置 062 3.1.1Contacts接触设置 063 3.1.2Joints接触设置 063 3.1.3Body Interactions接触设置 064 3.2显式动力学计算条件设置 068 3.2.1Initial Conditions初始条件设置 068 3.2.2Loads和Supports边界条件设置 068 3.2.3Analysis Settings分析设置 069 3.3计算设置 081 3.3.1并行计算设置 081 3.3.2计算信息查看 082 3.4后处理设置 083 3.4.1计算结果文件查看 083 3.4.2结果变量查看 084 3.4.3自定义结果 085 本章小结 088 第4章高速冲击碰撞问题089 4.1高速冲击碰撞问题理论及数值方法 089 4.1.1高速冲击碰撞问题中的应力波理论 089 4.1.2高速冲击碰撞过程中数值方法 091 4.2破片侵彻金属靶板 098 4.2.1计算模型及理论分析 098 4.2.2破片侵彻靶板（2D拉格朗日） 100 4.2.3破片侵彻靶板（2D欧拉） 107 4.2.4破片侵彻靶板（3D拉格朗日） 109 4.2.5破片侵彻靶板（3D对称模型） 111 4.2.6破片侵彻靶板（3D-SPH） 114 4.3子弹侵彻钢筋混凝土靶板 116 4.3.1计算模型及理论分析 116 4.3.2子弹侵彻钢筋混凝土（Lagrangian-beam） 117 4.3.3子弹侵彻钢筋混凝土（SPH-Lagrangian-beam） 121 4.3.4子弹侵彻钢筋混凝土（外部模型导入修改） 122 4.4子弹侵彻油箱 124 4.4.1计算模型及理论分析 124 4.4.2子弹侵彻油箱（2D流固耦合） 125 4.4.3子弹侵彻油箱（3D流固耦合） 128 本章小结 131 第5章爆炸问题132 5.1爆炸模型理论分析 132 5.2爆炸数值计算 134 5.2.1炸药状态方程 134 5.2.2人工黏性 138 5.2.3爆炸计算材料 138 5.2.4爆炸计算几何模型构建 138 5.2.5爆炸计算算法 139 5.3典型空气中爆炸 141 5.3.1模型分析 142 5.3.2爆炸计算模型（2D欧拉方法） 142 5.3.3爆炸计算模型（3D欧拉方法） 147 5.4爆炸对结构作用 149 5.4.1爆炸冲击波对混凝土结构作用 149 5.4.2爆炸驱动以及对靶板作用 155 本章小结 160 第6章Autodyn显式动力学计算161 6.1Autodyn简介 161 6.1.1Autodyn界面 161 6.1.2常见Autodyn计算终止问题 164 6.2泰勒杆碰撞 164 6.2.1计算模型描述 164 6.2.2Autodyn计算模型构建 165 6.2.3计算结果及后处理 169 6.3水下爆炸及其作用 171 6.3.1计算模型描述 171 6.3.21D计算模型构建 172 6.3.33D计算模型构建 175 本章小结 176 第7章LS-DYNA显式动力学计算177 7.1Workbench LS-DYNA简介 177 7.2子弹侵彻靶板计算 181 7.2.1计算模型描述 181 7.2.2Workbench LS-DYNA模型构建 182 7.2.3计算结果及后处理 184 7.3LS-DYNA中的流固耦合问题 184 7.3.1流固耦合模型设置 184 7.3.2Workbench平台中的S-ALE 187 7.3.3爆炸冲击波对结构作用 189 7.4爆炸冲击波对蜂窝结构作用（Conwep模型） 196 7.4.1计算模型描述 196 7.4.2Workbench LS-DYNA模型构建 197 7.4.3计算结果及后处理 200 本章小结 201 第8章Explicit Dynamics与Autodyn联合仿真202 8.1仿真流程简介 202 8.2子弹侵彻复合材料靶板 203 8.2.1计算模型描述及分析 203 8.2.2Workbench模型构建 204 8.2.3Autodyn计算及后处理 206 8.3战斗部爆炸碎片（SPH模型） 208 8.3.1计算模型及理论分析 208 8.3.2Workbench模型构建 210 8.3.3Autodyn计算及后处理 211 8.4金属射流冲击引爆带壳装药 213 8.4.1计算模型及理论分析 213 8.4.2Workbench中的前处理 215 8.4.3Autodyn计算及后处理 217 本章小结 219 第9章Explicit Dynamics与其他模块的联合应用220 9.1静力学及隐式动力学模块 220 9.1.1预应力条件下侵彻作用 220 9.1.2瞬态动力学及显式动力学分析 222 9.2显式动力学优化设计 226 9.2.1优化设计模块简介 226 9.2.2弹丸侵彻的优化分析 227 9.3Workbench显式动力学插件 232 9.3.1Drop Test跌落模块 232 9.3.2EnSight软件后处理 235 9.3.3Keyword Manager关键字管理 236 本章小结 237 参考文献238
前　　言
显式动力学一般用于求解包装跌落、金属冲压、汽车碰撞、子弹侵彻、炸药爆炸等物理过程和现象，这类现象往往具有高度非线性特征，包括大变形、高应变率、非线性材料、非线性接触和冲击等。传统的隐式动力学方法通常受到正在发生的变形量和接触非线性的影响，其数值计算结果容易不收敛。 ANSYS软件是目前使用较多的多物理场计算分析程序，能够模拟各类复杂问题。Workbench是ANSYS软件系统集成计算平台，融合多个计算模块，具有丰富的材料模型库、简单的几何建模方式、高效的网格划分方式、简单的并行计算设置，可以进行多物理场耦合、多模块联合仿真、多参数优化设计等。 本书主要介绍了ANSYS/Workbench平台中的显式动力学数值仿真方法。基于Workbench平台的显式动力学模块主要有Explicit Dynamics、Autodyn和LS-DYNA，本书重点介绍了Explicit Dynamics模块以及该模块与其他模块的联合仿真，并且对Autodyn模块和LS-DYNA模块进行了简单介绍。 第1章介绍了ANSYS/Workbench软件计算流程、界面和启动方式，介绍并比较了Explicit Dynamics、Autodyn和LS-DYNA模块。 第2章介绍了隐式与显式算法、几何建模、材料定义与加载、网格划分。 第3章介绍了显式动力学中的接触设置、计算条件设置、计算设置和后处理设置。 第4章介绍了高速冲击碰撞问题，包括高速冲击碰撞问题的理论及数值方法，基于实例介绍了破片侵彻金属靶板、子弹侵彻钢筋混凝土靶板和子弹侵彻油箱的建模仿真全过程。 第5章介绍了爆炸问题，包括爆炸理论及数值计算方法，通过实例构建了典型空气中爆炸、爆炸对结构作用的数值仿真模型。 第6章介绍了Autodyn显式动力学计算方法，包括Autodyn简介，并基于泰勒杆碰撞、水下爆炸及其作用2个实例介绍了计算模型的构建及仿真过程。 第7章介绍了LS-DYNA显式动力学计算方法，包括LS-DYNA模块简介以及子弹侵彻靶板、LS-DYNA中的流固耦合、爆炸冲击波对结构作用等3个实例的建模仿真全过程。 第8章介绍了Explicit Dynamics模块和Autodyn模块的联合仿真，通过子弹侵彻靶板、战斗部爆炸碎片和金属射流冲击引爆带壳装药3个实例展示了联合仿真过程。 第9章介绍了Explicit Dynamics模块与其他模块的联合仿真，包括静力学模块及隐式动力学模块、显式动力学优化设计和Workbench平台插件等。 本书由卞晓兵、黄广炎、王芳、周颖和王亮亮编著。在编写过程中，参考了国内外相关的文献资料，在此向所有参考文献作者表示感谢。 由于时间比较仓促、作者水平有限，加之数值模拟技术的发展日新月异，本书难免出现疏漏之处，欢迎广大读者和同行专家提出批评和指正。 编著者 2022年3月于延园

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内容简介

数值模拟技术是解决冲击、爆炸等非线性问题的有力工具。本书主要介绍了ANSYS/Workbench平台中的显式动力学模块及其在工程中的具体应用。全书共9章，系统介绍了Workbench平台的计算流程和显式动力学算法、几何建模、材料定义、网格划分、接触设置、计算条件设置、后处理等，并且通过实例详细介绍了常见的高速冲击碰撞、爆炸、跌落、优化设计等仿真过程。书中包含从建模到计算结果分析的全部操作过程，以便读者能够结合应用实例，快速掌握Workbench平台的数值建模和求解流程，加深对显式动力学数值仿真的理解。 本书适合理工科院校本科高年级学生和研究生作为显式动力学、有限元等课程的学习参考资料，也可为从事相关专业的工程技术人员和研究人员提供参考。

作者简介

无

目　　录
第1章ANSYS/Workbench软件基础001 1.1ANSYS/Workbench简介 001 1.2Workbench平台界面 002 1.2.1Mainmenu bar主菜单栏 003 1.2.2Basic bar基本工具栏 003 1.2.3Toolbox工具箱 003 1.2.4Project Schematic项目简图 004 1.2.5Message及Progress信息 004 1.3ANSYS Workbench的文件管理 005 1.4Workbench中显式动力学模块 006 1.4.1Explicit Dynamics模块 007 1.4.2Autodyn模块 008 1.4.3LS-DYNA模块 009 1.4.4三种模块比较 010 本章小结 012 第2章显式动力学软件介绍013 2.1隐式与显式算法 014 2.1.1隐式算法 014 2.1.2显式算法 015 2.1.3动力学网格算法介绍 016 2.1.4隐式与显式分析比较 017 2.2几何建模 019 2.2.1DesignModeler建模平台 019 2.2.2DesignModeler建模实例 021 2.2.3SpaceClaim建模平台 024 2.2.4SpaceClaim建模及几何清理实例 026 2.2.5外部几何模型导入 029 2.3材料定义与加载 030 2.3.1Engineering Data模块简介 030 2.3.2显式动力学材料基础 035 2.3.3显式动力学材料模型 037 2.4显式动力学网格划分 047 2.4.1Mesh模块网格划分 048 2.4.2几何分割后进行网格划分 054 2.4.3SpaceClaim网格划分 056 2.4.4ICEM网格划分 058 2.4.5外部网格划分软件导入 059 本章小结 061 第3章Explicit Dynamics模块设置062 3.1显式动力学中接触设置 062 3.1.1Contacts接触设置 063 3.1.2Joints接触设置 063 3.1.3Body Interactions接触设置 064 3.2显式动力学计算条件设置 068 3.2.1Initial Conditions初始条件设置 068 3.2.2Loads和Supports边界条件设置 068 3.2.3Analysis Settings分析设置 069 3.3计算设置 081 3.3.1并行计算设置 081 3.3.2计算信息查看 082 3.4后处理设置 083 3.4.1计算结果文件查看 083 3.4.2结果变量查看 084 3.4.3自定义结果 085 本章小结 088 第4章高速冲击碰撞问题089 4.1高速冲击碰撞问题理论及数值方法 089 4.1.1高速冲击碰撞问题中的应力波理论 089 4.1.2高速冲击碰撞过程中数值方法 091 4.2破片侵彻金属靶板 098 4.2.1计算模型及理论分析 098 4.2.2破片侵彻靶板（2D拉格朗日） 100 4.2.3破片侵彻靶板（2D欧拉） 107 4.2.4破片侵彻靶板（3D拉格朗日） 109 4.2.5破片侵彻靶板（3D对称模型） 111 4.2.6破片侵彻靶板（3D-SPH） 114 4.3子弹侵彻钢筋混凝土靶板 116 4.3.1计算模型及理论分析 116 4.3.2子弹侵彻钢筋混凝土（Lagrangian-beam） 117 4.3.3子弹侵彻钢筋混凝土（SPH-Lagrangian-beam） 121 4.3.4子弹侵彻钢筋混凝土（外部模型导入修改） 122 4.4子弹侵彻油箱 124 4.4.1计算模型及理论分析 124 4.4.2子弹侵彻油箱（2D流固耦合） 125 4.4.3子弹侵彻油箱（3D流固耦合） 128 本章小结 131 第5章爆炸问题132 5.1爆炸模型理论分析 132 5.2爆炸数值计算 134 5.2.1炸药状态方程 134 5.2.2人工黏性 138 5.2.3爆炸计算材料 138 5.2.4爆炸计算几何模型构建 138 5.2.5爆炸计算算法 139 5.3典型空气中爆炸 141 5.3.1模型分析 142 5.3.2爆炸计算模型（2D欧拉方法） 142 5.3.3爆炸计算模型（3D欧拉方法） 147 5.4爆炸对结构作用 149 5.4.1爆炸冲击波对混凝土结构作用 149 5.4.2爆炸驱动以及对靶板作用 155 本章小结 160 第6章Autodyn显式动力学计算161 6.1Autodyn简介 161 6.1.1Autodyn界面 161 6.1.2常见Autodyn计算终止问题 164 6.2泰勒杆碰撞 164 6.2.1计算模型描述 164 6.2.2Autodyn计算模型构建 165 6.2.3计算结果及后处理 169 6.3水下爆炸及其作用 171 6.3.1计算模型描述 171 6.3.21D计算模型构建 172 6.3.33D计算模型构建 175 本章小结 176 第7章LS-DYNA显式动力学计算177 7.1Workbench LS-DYNA简介 177 7.2子弹侵彻靶板计算 181 7.2.1计算模型描述 181 7.2.2Workbench LS-DYNA模型构建 182 7.2.3计算结果及后处理 184 7.3LS-DYNA中的流固耦合问题 184 7.3.1流固耦合模型设置 184 7.3.2Workbench平台中的S-ALE 187 7.3.3爆炸冲击波对结构作用 189 7.4爆炸冲击波对蜂窝结构作用（Conwep模型） 196 7.4.1计算模型描述 196 7.4.2Workbench LS-DYNA模型构建 197 7.4.3计算结果及后处理 200 本章小结 201 第8章Explicit Dynamics与Autodyn联合仿真202 8.1仿真流程简介 202 8.2子弹侵彻复合材料靶板 203 8.2.1计算模型描述及分析 203 8.2.2Workbench模型构建 204 8.2.3Autodyn计算及后处理 206 8.3战斗部爆炸碎片（SPH模型） 208 8.3.1计算模型及理论分析 208 8.3.2Workbench模型构建 210 8.3.3Autodyn计算及后处理 211 8.4金属射流冲击引爆带壳装药 213 8.4.1计算模型及理论分析 213 8.4.2Workbench中的前处理 215 8.4.3Autodyn计算及后处理 217 本章小结 219 第9章Explicit Dynamics与其他模块的联合应用220 9.1静力学及隐式动力学模块 220 9.1.1预应力条件下侵彻作用 220 9.1.2瞬态动力学及显式动力学分析 222 9.2显式动力学优化设计 226 9.2.1优化设计模块简介 226 9.2.2弹丸侵彻的优化分析 227 9.3Workbench显式动力学插件 232 9.3.1Drop Test跌落模块 232 9.3.2EnSight软件后处理 235 9.3.3Keyword Manager关键字管理 236 本章小结 237 参考文献238
前　　言
显式动力学一般用于求解包装跌落、金属冲压、汽车碰撞、子弹侵彻、炸药爆炸等物理过程和现象，这类现象往往具有高度非线性特征，包括大变形、高应变率、非线性材料、非线性接触和冲击等。传统的隐式动力学方法通常受到正在发生的变形量和接触非线性的影响，其数值计算结果容易不收敛。 ANSYS软件是目前使用较多的多物理场计算分析程序，能够模拟各类复杂问题。Workbench是ANSYS软件系统集成计算平台，融合多个计算模块，具有丰富的材料模型库、简单的几何建模方式、高效的网格划分方式、简单的并行计算设置，可以进行多物理场耦合、多模块联合仿真、多参数优化设计等。 本书主要介绍了ANSYS/Workbench平台中的显式动力学数值仿真方法。基于Workbench平台的显式动力学模块主要有Explicit Dynamics、Autodyn和LS-DYNA，本书重点介绍了Explicit Dynamics模块以及该模块与其他模块的联合仿真，并且对Autodyn模块和LS-DYNA模块进行了简单介绍。 第1章介绍了ANSYS/Workbench软件计算流程、界面和启动方式，介绍并比较了Explicit Dynamics、Autodyn和LS-DYNA模块。 第2章介绍了隐式与显式算法、几何建模、材料定义与加载、网格划分。 第3章介绍了显式动力学中的接触设置、计算条件设置、计算设置和后处理设置。 第4章介绍了高速冲击碰撞问题，包括高速冲击碰撞问题的理论及数值方法，基于实例介绍了破片侵彻金属靶板、子弹侵彻钢筋混凝土靶板和子弹侵彻油箱的建模仿真全过程。 第5章介绍了爆炸问题，包括爆炸理论及数值计算方法，通过实例构建了典型空气中爆炸、爆炸对结构作用的数值仿真模型。 第6章介绍了Autodyn显式动力学计算方法，包括Autodyn简介，并基于泰勒杆碰撞、水下爆炸及其作用2个实例介绍了计算模型的构建及仿真过程。 第7章介绍了LS-DYNA显式动力学计算方法，包括LS-DYNA模块简介以及子弹侵彻靶板、LS-DYNA中的流固耦合、爆炸冲击波对结构作用等3个实例的建模仿真全过程。 第8章介绍了Explicit Dynamics模块和Autodyn模块的联合仿真，通过子弹侵彻靶板、战斗部爆炸碎片和金属射流冲击引爆带壳装药3个实例展示了联合仿真过程。 第9章介绍了Explicit Dynamics模块与其他模块的联合仿真，包括静力学模块及隐式动力学模块、显式动力学优化设计和Workbench平台插件等。 本书由卞晓兵、黄广炎、王芳、周颖和王亮亮编著。在编写过程中，参考了国内外相关的文献资料，在此向所有参考文献作者表示感谢。 由于时间比较仓促、作者水平有限，加之数值模拟技术的发展日新月异，本书难免出现疏漏之处，欢迎广大读者和同行专家提出批评和指正。 编著者 2022年3月于延园

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