一种基于虚拟材料参数的车身刚度匹配设计方法
|
摘要
传统的承载式客车车身普遍存在着左右两侧车身严重不对称,而车身载荷近似对称分布的问题.针对这一问题,本文结合车身左右侧性能互补的设计思想,初步提出一种基于虚拟材料参数的车身刚度匹配设计方法.以某待开发车型为载体展开研究,首先对整车结构进行了左右两侧的模块化分组,并通过调整材料参数给出车身单侧弯曲刚度的计算方法;然后通过对车身左右两侧杆件的结构布置与尺寸参数进行优化调整,对车身左右两侧结构进行性能互补的刚度匹配设计;最后通过分析对比匹配前后的车身各项性能,检验了此设计方法的正确性,并总结了该设计方法的具体流程.
The traditional bus body structure has a contradictory issue between the serious asymmetry of the left and the right halves of the body and the approximate symmetry of load distribution. In order to solve this problem,this paper combines the design idea of complementary performance on the left and right sides of the body,and puts forward a stiffness matching method of the body based on adjusting virtual material parameters. Based on a bus model to be developed by an enterprise,the modular grouping of the whole body model on the left and right sides is firstly carried out,and the calculation method of the bending stiffness of the single side of the body is given. Secondly,by adjusting the arrangement form and the section size of the bar pieces on the left and right sides of the body,the stiffness matching design of the whole body with complementary performance is carried out. Finally,through the analysis and comparison of various performances before and after the matching,the validity of the matching design method in this paper is verified,and the process of this method is summarized.
The traditional bus body structure has a contradictory issue between the serious asymmetry of the left and the right halves of the body and the approximate symmetry of load distribution. In order to solve this problem,this paper combines the design idea of complementary performance on the left and right sides of the body,and puts forward a stiffness matching method of the body based on adjusting virtual material parameters. Based on a bus model to be developed by an enterprise,the modular grouping of the whole body model on the left and right sides is firstly carried out,and the calculation method of the bending stiffness of the single side of the body is given. Secondly,by adjusting the arrangement form and the section size of the bar pieces on the left and right sides of the body,the stiffness matching design of the whole body with complementary performance is carried out. Finally,through the analysis and comparison of various performances before and after the matching,the validity of the matching design method in this paper is verified,and the process of this method is summarized.
引文
[1]刘江,桂良进,王青春,等.全承载式大客车车身结构多目标优化[J].汽车工程,2008,30(2):170-173.
[2]王思祖,黄鼎友,曹佳,等.全承载式客车车身结构轻量化设计[J].机械设计与制造,2014(10):73-75.
[3]沈光烈,李波,黄昶春,等.全承载式客车车身结构有限元分析与改进[J].车辆与动力技术,2013(2):27-30.
[4] GAUCHIA A,DIAZ V,BOADA M J L,et al. Torsional stiffness and weight optimization of a real bus structure[J]. International Journal of Automotive Technology,2010,11(1):41-47.
[5] FELLOWS N A,HARRIS A,DURODOLA J F,et al.Effects of design and adhesive modulus on the torsional stiffness of automotive structures[J]. Proceedings of the Institution of Mechanical Engineers,Part D:Journal of Automobile Engineering,2008,222(8):1421-1428.
[6]梁晨,王国林,杨建,等.基于最少约束方法的汽车车身静刚度试验[J].汽车工程,2015,37(10):1202-1207.
[7] MIHAYLOVA P,BALDANZINI N,PRATELLESI A,et al. Beam bounding box—a novel approach for beam concept modeling and optimization handling[J]. Finite Elements in Analysis and Design,2012,60:13-24.
[8]林辉,陈吉清,谢然.汽车车身结构刚度与模态分析及结构改进方法研究[J].现代制造工程,2011(6):58-63.
[9] NA J X,YUAN Z,GAO J F. A novel method for bending stiffness evaluation of bus body[J]. Advances in Mechanical Engineering,2014,7(1):278192-278192.
[10]郭敬文,姚成.客车车身侧翻刚度仿真研究[J].客车技术与研究,2011,33(1):5-8.
[11]于国飞.基于有限元的全承载式客车车身强度刚度分析[J].客车技术与研究,2010,32(4):14-16.
[12]兰凤崇,李涛.客车车身结构件对整车刚度的影响[J].汽车工程,2002,24(2):137-140.
[13]魏锦辉,任伟新,万华平.基于模态柔度的有限元模型修正方法[J].振动与冲击,2013,32(13):106-111.
[2]王思祖,黄鼎友,曹佳,等.全承载式客车车身结构轻量化设计[J].机械设计与制造,2014(10):73-75.
[3]沈光烈,李波,黄昶春,等.全承载式客车车身结构有限元分析与改进[J].车辆与动力技术,2013(2):27-30.
[4] GAUCHIA A,DIAZ V,BOADA M J L,et al. Torsional stiffness and weight optimization of a real bus structure[J]. International Journal of Automotive Technology,2010,11(1):41-47.
[5] FELLOWS N A,HARRIS A,DURODOLA J F,et al.Effects of design and adhesive modulus on the torsional stiffness of automotive structures[J]. Proceedings of the Institution of Mechanical Engineers,Part D:Journal of Automobile Engineering,2008,222(8):1421-1428.
[6]梁晨,王国林,杨建,等.基于最少约束方法的汽车车身静刚度试验[J].汽车工程,2015,37(10):1202-1207.
[7] MIHAYLOVA P,BALDANZINI N,PRATELLESI A,et al. Beam bounding box—a novel approach for beam concept modeling and optimization handling[J]. Finite Elements in Analysis and Design,2012,60:13-24.
[8]林辉,陈吉清,谢然.汽车车身结构刚度与模态分析及结构改进方法研究[J].现代制造工程,2011(6):58-63.
[9] NA J X,YUAN Z,GAO J F. A novel method for bending stiffness evaluation of bus body[J]. Advances in Mechanical Engineering,2014,7(1):278192-278192.
[10]郭敬文,姚成.客车车身侧翻刚度仿真研究[J].客车技术与研究,2011,33(1):5-8.
[11]于国飞.基于有限元的全承载式客车车身强度刚度分析[J].客车技术与研究,2010,32(4):14-16.
[12]兰凤崇,李涛.客车车身结构件对整车刚度的影响[J].汽车工程,2002,24(2):137-140.
[13]魏锦辉,任伟新,万华平.基于模态柔度的有限元模型修正方法[J].振动与冲击,2013,32(13):106-111.