扁挤压筒内孔形状对结构强度的影响  

Influence of hole shape on structural strength of flat container

作　　者：苏芳 王晓国 马士强[1,2] SU Fang;WANG Xiaoguo;MA Shiqiang(Technology Center,Taiyuan Heavy Industry Co.,Ltd.,Taiyuan 030024,Shanxi China;Technology Center,TZ(Tianjin)Binhai Heavy Machinery Co.,Ltd.,Tianjin 300452,China)

机构地区：[1]太原重工股份有限公司技术中心,山西太原030024 [2]太重(天津)滨海重型机械有限公司技术中心,天津300452

出　　处：《锻压装备与制造技术》2024年第4期104-107,共4页China Metalforming Equipment & Manufacturing Technology

基　　金：天津市科技领军(培育)企业认定及支持项目(20YDLZGX00290);天津市“项目+团队”重点培养专项(XC202050)。

摘　　要：扁挤压筒是挤压扁宽型材的重要结构件,其结构应力最大值一般发生在内壁上。由于内孔非圆形,应力分布极不均匀,存在较严重的应力集中。内壁的应力集中情况同内孔形状密切相关,也影响了扁挤压筒的整体结构应力状态。采用有限元法对扁挤压筒结构进行热—结构耦合分析,模拟各工况下筒结构受载后变形及应力状态,分别对三种形状内孔的扁挤压筒结构进行强度仿真计算,对比不同内孔形状的筒结构变形、应力状态及工艺可行性,为制造及优化设计提供参考。Flat container is an important structural part for extruding flat and wide profiles,and its maximum stress generally occurs on the inner wall.Because the inner hole is not round,the stress distribution is very uneven,and there is a serious stress concentration.The stress concentration of the inner wall is closely related to the shape of the inner hole,and also affects the stress state of the whole structure of the flat container.The thermal and structural coupling analysis of the flat container structure was carried out by using the finite element method to simulate the deformation and stress state of the container loaded under various working conditions.The strength simulation calculation of the flat container structure with three kinds of inner holes was carried out respectively,and the deformation,stress state and process feasibility of the container structure with different inner hole shapes were compared,which provided references for manufacturing and optimization design.

关 键 词：扁挤压筒 有限元分析 强度计算 热—结构耦合分析 

分 类 号：TG375.43[金属学及工艺—金属压力加工] TG249.2