半挂车900 MPa级梁架承载仿真分析与优化  

Simulation analysis and optimization of the load of the commercial semi-trailer’s 900 MPa beam frame

作　　者：张楠 田志凌[1] 张书彦[2] 赵阳 ZHANG Nan;TIAN Zhi-ling;ZHANG Shu-yan;ZHAO Yang(Central Iron and Steel Research Institute,Beijing 100081;Centre of Excellence for Advanced Materials,Dongguan 523808;Shougang Research Institute of Technology,Beijing 100041)

机构地区：[1]钢铁研究总院,北京100081 [2]东莞材料基因高等理工研究院,广东东莞523808 [3]首钢技术研究院,北京100041

出　　处：《机械设计》2020年第10期107-113,共7页Journal of Machine Design

基　　金：广东省“珠江人才计划”引进创新创业团队资助项目(2016ZT06G025);广东省自然科学基金资助项目(2017B030306014)。

摘　　要：商用半挂车梁架在使役过程中承担着整车载货负荷、路面随机载荷、制动及转向等附加应力作用,是整车运输安全性保障的关键。文中通过半挂车900 MPa级高强钢梁架的动载应力实测,获得了标准路面载荷谱。基于谱图数据对刚性拘束的半挂车梁架进行了优化,建立了梁架与地面间的弹簧接触模型。结果表明:弹簧接触模型的计算结果与路谱实测值高度吻合,最大误差约2.998%,可准确描述实际路况。实测了梁架鹅颈位置在满载条件下的前6个共振频率,分别为11.9,18.5,25.3,30.1,43.1,48.8 Hz,这与模型模态分析结果高度一致。The commercial semi-trailer’s beam frame bears the additional stress of the whole vehicle’s load,the random load on the road,as well as the braking and steering during the service,which is the key to the safety of transportation.In this article,the standard road-surface load spectrum is identified by measuring the dynamic load of the semi-trailer’s 900 MPa high-strength steel beam frame.Based on the spectral data,the rigidly-constrained semi-trailer’s beam frame is optimized,and the spring-contact model between the beam and the ground is set up.It’s shown that the calculated results of the spring-contact model are highly consistent with the measured data on road spectrum,and the maximum error is about 2.998%,which accurately describes the actual road conditions.The first six resonance frequencies of the beam frame’s gooseneck position under full load conditions are measured,which are 11.9,18.5,25.3,30.1,43.1,48.8 Hz respectively.They are highly consistent with the results of modal analysis.

关 键 词：商用车 载荷谱 梁架 高强钢 应力 

分 类 号：U462.3+6[机械工程—车辆工程]