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焦点随移激光打孔和工件振动辅助激光切割技术研究

摘要第4-5页
Abstract第5-6页
Chapter 1 Introduction第9-29页
    1.1 Purpose and Significance of the Study第10-11页
        1.1.1 Research on Laser Drilling of Metal Sheet第10页
        1.1.2 Research of Laser Cutting of Metal Sheet第10-11页
        1.1.3 Significance of the Study第11页
    1.2 Background and Status第11-17页
        1.2.1 Background and Status of Laser Drilling第11-15页
        1.2.2 Background and Status of Laser Cutting第15-17页
    1.3 Problem Statement第17-26页
        1.3.1 Laser Drilling Problems第18页
        1.3.2 Laser Cutting Problems第18-20页
        1.3.3 Background of Vibration Assisted Cutting第20-22页
        1.3.4 Simulation Background of Laser Drilling and Cutting第22-26页
    1.4 Methodology第26-27页
    1.5 Study Contents第27-29页
Chapter 2 Analytical Model on Laser Machining第29-40页
    2.1 Heat Transfer Theory第29-34页
        2.1.1 Temperature Distribution第29-33页
        2.1.2 Energy Balance During Laser Processing第33-34页
    2.2 Finite Element Method第34-38页
        2.2.1 General Steps of Finite Element Method第34-36页
        2.2.2 Finite Element Equation for Heat Transfer Problem第36-38页
    2.3 Summary第38-40页
Chapter 3 Research on Laser Drilling of Metal Sheet by Moving FocalPoint with Machining Time第40-65页
    3.1 Simulation of Laser Drilling第41-56页
        3.1.1 Assumptions第41-42页
        3.1.2 Boundary Conditions and Initial Conditions第42页
        3.1.3 Heat Flux第42-43页
        3.1.4 Laser and Material Parameters第43-44页
        3.1.5 Geometry and Meshes第44-46页
        3.1.6 Results and Discussions第46-56页
    3.2 Experiments of Laser Drilling第56-64页
        3.2.1 Experimental Material第57页
        3.2.2 Experimental Procedure第57-59页
        3.2.3 Results and Discussions第59-64页
    3.3 Summary第64-65页
Chapter 4 Research on Vibration Assisted Laser Cutting of Metal Sheet第65-76页
    4.1 Simulation of Laser Cutting第65-71页
        4.1.1 Simulation Procedure第65-66页
        4.1.2 Results and Discussions第66-71页
    4.2 Experiments of Vibration Assisted Laser Cutting第71-75页
        4.2.1 Experimental Procedure第71-72页
        4.2.2 Results and Discussions第72-75页
    4.3 Summary第75-76页
Conclusion第76-78页
References第78-84页
Acknowledgement第84-85页
Curriculum Vitae第85页

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