摘要
文章分析了内高压成形四通管的工艺性,利用动态显式算法模拟了等径四通管内高压成形过程,给出了有限元模拟结果并对其进行了缺陷、厚度和枝管成形高度分析,确定了合理的加载路径。研究表明,四通管减薄区域是枝管贯通母线中心附近区域和枝管端面圆环形区域;增厚区域主要在枝管过渡圆角部位和主管两端;非对称反向压力可以改善枝管贯通母线中心附近区域材料的流动。
The technological features of hydroforming X-joints is analyzed. Four representative loading paths including symmetric and asymmetric back force are set. The process of hydroforming X-joints is simulated with the finite element method. The simulation results are given, the defects, thickness and branch pipe height analyzed, and the thickness distribution is shown. As a result, proper loading paths are determined. It is pointed out that asymmetric back force can improve the material flowage in the middle zone around the bus-bar of the branch tube.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第9期1121-1124,共4页
Journal of Hefei University of Technology：Natural Science
基金
江淮汽车研究院三期资助项目
