平车+LNG罐箱液固耦合模态仿真及试验研究  

Simulation and Experimental Research on the Liquid-Solid Coupling Modal of Flatbed Truck and LNG Tank Container

作　　者：赵春雷 谢素明[1] 赵尚超 李向伟[1,2] 张岱霖 ZHAO Chunlei;XIE Suming;ZHAO Shangchao;LI Xiangwei;ZHANG Dailin(Zhan Tianyou College(CRRC College),Dalian Jiaotong University,Dalian 116028,China;Technology Development Center,Qiqihar Vehicle Co.,Ltd.,Qiqihar 161002,China;School of Materials Science and Engineering,Tianjin University,Tianjin 300000,China)

机构地区：[1]大连交通大学詹天佑学院(中车学院),辽宁大连116028 [2]齐齐哈尔车辆有限公司技术开发中心,黑龙江齐齐哈尔161002 [3]天津大学材料科学与工程学院,天津300000

出　　处：《大连交通大学学报》2024年第6期1-6,98,共7页Journal of Dalian Jiaotong University

基　　金：中国中车原创培育专项(2022CYY007)。

摘　　要：为了解决液固耦合模态问题,利用Abaqus有限元分析软件,应用液体单元法、声固耦合法和附加质量法建立小型液体罐箱的液固耦合模型。模态计算结果与试验结果的比较,验证了这三种仿真方法的准确性和工程适用性。此外,以平车+LNG罐箱为研究对象,在考虑液体可压缩性和液面晃动效应的基础上,采用声学单元和薄膜单元对液体进行建模,并将模态计算结果与试验结果进行对比,对比结果可知声固耦合法更适合分析复杂工程问题中的液固耦合模态和液体晃动模态特性,适合应用在车辆结构设计后期模型的精细化分析阶段。LNG罐箱的工程案例展示了仿真计算方法与试验测试方法的互补性,共同为结构设计提供有效指导。In order to solve the liquid-solid coupling modal problem, a liquid-solid coupling model for small liquid tank boxes was established using Abaqus finite element analysis software, applying the liquid element, acoustic-solid coupling and added mass methods. These three simulation methods' accuracy and engineering applicability were verified by comparing the modal calculation results with experiment ones. Furthermore, the acoustic and membrane elements were used to model the liquid by taking the flat car + LNG tank box as the research object and considering the compressibility of the liquid and the effect of liquid sloshing. The modal calculation results were compared with experiment ones, concluding that the acoustic-solid coupling method is more suitable for analyzing the liquid-solid coupling modal and liquid sloshing modal characteristics in the complex engineering problems. It is particularly applicable in the later stage of detailed analysis for vehicle structural design models. The engineering case of the LNG tank box demonstrates the complementarity of simulation calculation methods and experiment test methods, providing effective guidance for the structural design.

关 键 词：LNG罐箱 液固耦合 模态分析 模态试验 

分 类 号：U294.82[交通运输工程—交通运输规划与管理]