| 基于MSC.Marc的船体薄板脉冲激光切割有限元模拟 |
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| 引用本文： | 黄震宇,邱宇舟.基于MSC.Marc的船体薄板脉冲激光切割有限元模拟[J].造船技术,2019(4):23-28. |
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| 作者姓名： | 黄震宇 邱宇舟 |
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| 作者单位： | 中船第九设计研究院工程有限公司 |
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| 摘 要： | 为方便分析船体AH36薄板脉冲激光熔化切割过程的温度场及切割残余边缘变形量,采用非线性有限元软件MSC.Marc建立AH36薄板脉冲激光切割有限元模型,并利用Fortran进行二次开发,编写脉冲激光热源函数程序,模拟AH36薄板的切割过程,分析比较激光离焦量、功率、切割速度、频率与脉冲宽度对激光切割温度历程和切割边缘残余变形量的影响。经计算发现:离焦量对切割温度历程和切割残余边缘变形量影响相对较小;在一定范围内,随着功率、频率、脉冲宽度增大和切割速度降低,切割过程中温度升高,切割残余边缘变形量减小。
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| 关 键 词： | AH36薄板 脉冲激光 切割 有限元 模拟 |
Finite Element Simulation on Hull Sheet Cutting Using Pulse Laser Based on MSC.Marc |
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| HUANG Zhenyu,QIU Yuzhou.Finite Element Simulation on Hull Sheet Cutting Using Pulse Laser Based on MSC.Marc[J].Journal of Marine Technology,2019(4):23-28. |
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| Authors: | HUANG Zhenyu QIU Yuzhou |
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| Institution: | (China Shipbuilding NDRI Engineering Co., Ltd., Shanghai 200063,China) |
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| Abstract: | In order to analyze the temperature field and the residual edge deformation of AH36 sheet of the hull during melting and cutting process by pulsed laser, a finite element model is established by nonlinear finite element software MSC.Marc.The function program of heat source is defined by secondary development software Fortran to simulate the cutting process of AH36 sheet.The effects of laser defocus, power, cutting speed, frequency and pulse width on laser cutting temperature history and residual edge deformation are analyzed.It is found by calculation that: the effect of defocus on the cutting temperature history and the residual edge deformation is relatively small;within a certain range, the increase of power, frequency, pulse width and the cutting speed will lead to the increase of temperature and the decrease of residual edge deformation during cutting process. |
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| Keywords: | AH36 sheet pulsed laser cutting finite element simulation |
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