基于ANSYS和响应面法的排管机立柱优化设计
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摘要
为满足排管机立柱的轻量化设计要求,快速实现设备的降本增效,以排管机立柱截面尺寸优化为研究重点,利用Design Modeler模块进行参数化建模,利用ANSYS Workbench软件静力学模块对立柱的刚度、强度以及振动模态进行有限元分析,并对立柱的结构参数进行优化。分析结果表明:立柱侧壁板宽度L_2和折弯板角度α对最大总变形的敏感度最高,增大L_2和α的数值可以有效减小最大总变形量; L_2和α对最大等效应力的影响是非线性的,随着α的增大,最大等效应力先升高后降低,L_2增大时最大等效应力会降低;优化方案相较原方案质量减轻3. 2%,最大总变形量降低14. 1%,在最大等效应力降低的同时前3阶固有频率均有所提高,达到了减轻立柱质量、增强刚度及提高固有频率的优化目的。所得结果可为类似机械设备的尺寸优化设计提供借鉴与参考。
To meet the lightweight design requirements of the pipe racking column,and quickly realize cost reduction and efficiency increasing of the equipment,the optimization of the pipe racking column section dimension is taken as the research focus. The design modeler module is used for parametric modeling,and the statics module of ANSYS Workbench software is used for finite element analysis on the stiffness,strength and vibration modes of the column. Then,the structural parameters of the column are optimized. The analysis results show that the width of the side wall of the column L_2 and the angle of the bending plate α are the most sensitive to the maximum total deformation. Increasing the values of L_2 and α can effectively reduce the maximum total deformation. The influence of L_2 and α on the maximum equivalent stress is nonlinear. The maximum equivalent stress increases first and then decreases with the increase of α. The maximum equivalent stress decreases with L_2. The optimized scheme reduces the mass by 3. 2% and the maximum total deformation by 14. 1%. When the maximum equivalent stress is reduced,the natural frequencies of the first 3 rd order are improved,and the optimization purpose of reducing the column quality,enhancing the stiffness and improving the natural frequency is achieved. The obtained results can provide references for the dimension optimization of relevant equipment.
To meet the lightweight design requirements of the pipe racking column,and quickly realize cost reduction and efficiency increasing of the equipment,the optimization of the pipe racking column section dimension is taken as the research focus. The design modeler module is used for parametric modeling,and the statics module of ANSYS Workbench software is used for finite element analysis on the stiffness,strength and vibration modes of the column. Then,the structural parameters of the column are optimized. The analysis results show that the width of the side wall of the column L_2 and the angle of the bending plate α are the most sensitive to the maximum total deformation. Increasing the values of L_2 and α can effectively reduce the maximum total deformation. The influence of L_2 and α on the maximum equivalent stress is nonlinear. The maximum equivalent stress increases first and then decreases with the increase of α. The maximum equivalent stress decreases with L_2. The optimized scheme reduces the mass by 3. 2% and the maximum total deformation by 14. 1%. When the maximum equivalent stress is reduced,the natural frequencies of the first 3 rd order are improved,and the optimization purpose of reducing the column quality,enhancing the stiffness and improving the natural frequency is achieved. The obtained results can provide references for the dimension optimization of relevant equipment.
引文
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[3]艾延廷,路闯,武威,等.螺栓连接纵向安装边机匣的有限元分析与优化[J].科学技术与工程,2013,13(29):8684-8690.AI Y T,LU C,WU W,et al.Bolt connection with the longitudinal edge of casing installation finite element analysis and optimization[J].Science Technology and Engineering,2013,13(29):8684-8690.
[4]张志红,何桢,郭伟.在响应曲面方法中三类中心复合设计的比较研究[J].沈阳航空工业学院学报,2007,24(1):87-91.ZHANG Z H,HE Z,GUO W.A comparative study of three central composite designs in response surface methodology[J].Journal of Shenyang Institute of Aeronautical Engineering,2007,24(1):87-91.
[5]姜衡,管贻生,邱志成,等.基于响应面法的立式加工中心动静态多目标优化[J].机械工程学报,2011,47(11):125-133.JIANG H,GUAN Y S,QIU Z C,et al.Dynamic and static multi-objective optimization of a vertical machining center based on response surface method[J].Journal of Mechanical Engineering,2011,47(11):125-133.
[6]全国钢标准化技术委员会.低合金高强度结构钢:GB/T 1591-2008[S].北京:中国标准出版社,2008.National Technical Committee on Steel of Standardization Administration of China.High strength low alloy structural steels:GB/T 1591-2008[S].Beijing:Standards Press of China,2008.
[7]中国船级社.海上移动平台入级规范[S].北京:人民交通出版社,2012.China Classification Society.Rules for classification of mobile offshore units[S].Beijing:China Communications Press,2012.
[8]中国国家标准化管理委员会.机械产品结构有限元力学分析通用规则:GB/T 33582-2017[S].北京:中国标准出版社,2017.National Technical Committee on Steel of Standardization Administration of China.General principles of structuralfinite element analysis for mechanical products:GB/T33582-2017[S].Beijing:Standards Press of China,2017.
[9]American Bureau of Shipping.Guide for certification of lifting appliances[EB/OL].(2018-08-27).http:∥www.eagle.org/.
[10]Det Norske Veritas.Lifting appliances(2013):No.2.22[EB/OL].[2018-08-27].http:∥www.dnvgl.com.
[11]American Bureau of Shipping.Rules for building and classing mobile offshore drilling units:2012[EB/OL].[2018-08-27].http:∥www.eagle.org/.
[12]American Petroleum Institute.Specification for drilling and well servicing structures[S].Washington:APIPublishing Services,2008.