大型挂舵臂铸钢件试样中夹杂物的应力场数值模拟.pdfVIP

维普资讯 学兔兔 Feb．2008 VOI．57 NO．2 一 ^ ●^ ●‘ ●^ ●‘— ● ● {计算机应用 } ’ ●、，■ ■、‘●■■，’n■、— ■^，～ _ 大型挂舵臂铸钢件试样中夹杂物的应力场数值模拟 张可锋，杨涤心，谢敬佩，刘宗发，王爱琴，王文焱 (河南科技大学材料科学与工程学院，河南洛阳471003) 摘要：钢中的非金属夹杂物对钢质量和性能的影响，不仅取决于夹杂物数量的多少，而且与夹杂物的类型、形状、大 小、变形行为和分布情况有着密切的关系。采用ANSYS有限元分析软件，对在大型挂舵臂铸钢件中出现的不同类型、 形状、分布的夹杂物进行了在变载荷作用下，夹杂物及其周围基体应力场分布的模拟，进而从宏观力学角度分析夹杂 物的微观力学行为，为阐明夹杂物在复杂载荷下的反应机制提供了依据。 关键词：ANSYS；夹杂物；应力集中；最大应力 中图分类号：TP391 文献标识码：A 文章编号：1001—4977(2008)02—0144—06 Stress Field NumericaI Simulation for Inclusions of Large Rudder Arm Steel Casting Sample ZHANG Ke—feng，YANG Di—xin，XlE Jing—pei，LIU Zong—fa，WANG Ai—qin，WANG Wen-yan (Institute of Material Science and Engineering，He。nan University of Science and Technology Luoyang 471 003，He’nan，China) Abstract：The influence of nonmetaI inclusions on quality and performance of steels iS not only dependent on totaI quantity of inclusions，but also on the type，shape，size，deforminq behavior and distribution of the inclusions in steeI．By using ANSYS finite element analysis software．the stress field distribution of inclusions with different type．shape and distribution appeared in heavy rudder arm steeI castings and around matrix was simulated under the condition of changing Ioad．then micromechanics behavior of inclusions is analyzed frOm view of macromechanics．SO foundation is provided to clarify reaction mechanism of inclusions under complex load． Key WOrds：ANSYS：inclusions：stress cOncentratiOn：maximum stress 船舶挂舵臂是支撑、吊挂舵结构的关键件，重82 t，