板柱结构及桁架结构对车体刚度的影响

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Influence of Slab-column Structure and Truss Structure on Car Body Stiffness

FUDianyi，LIPei，SONG Xiaozhi

（Dalian R&D Center，CRRC Qiqihar Rolling Stock Co.，Ltd.，Dalian 116052，China）

Abstract： According to the client requirements，CRRC Qiqihar Roling Stock Co.，Ltd. designed a new type of livestock truck.Since the transportationof livestock requires high air circulation，large panels cannot be used for side walls，and frame structures are used instead.To compare the efects of connecting the side walls with a slab-column structure and a truss structure on the stifness of the car body，this paper uses HyperMesh software and NASTRAN software to simulate the stiffness of car body of the two structures.The results show that under the same verticalload，the vertical deformation of the mide beam and side beam of the slab-column vehicle is larger than that of the truss vehicle. Itis proven that the truss structure has a great effect on improving the stiffnessof thecar body，so it is betterto use it to connect the side wall.According to the requirements of transporting livestock，the prototype vehicle after optimization of truss structure is tested， and thetest results are compared with the simulation results，which verifies the accuracy of the simulation results，and accumulates valuable experience for the future design of car body side wallframe structure.

Key words：livestock truck；slab-column structure；truss structure；stiffness；finite element analysis；test verification

中车齐齐哈尔车辆有限公司根据客户需要设计了一种新型家畜车，车体为全钢焊接结构，主要由底架、侧墙、端墙和车顶等部分组成，车内设置水箱、食槽和排污装置，可满足长距离运输家畜和车上人员生活的要求。（剩余3933字）