| 大锻件内部疏松缺陷锻造压实过程FEM分析 |
| |
| 引用本文： | 黄华贵,杜凤山,许志强.大锻件内部疏松缺陷锻造压实过程FEM分析[J].工程力学,2011(9):245-250. |
| |
| 作者姓名： | 黄华贵 杜凤山 许志强 |
| |
| 作者单位： | 燕山大学机械工程学院;燕山大学亚稳材料制备技术与科学重点实验室; |
| |
| 基金项目： | 国家自然科学基金重点项目(50435010); 国家“十一五”科技支撑计划项目(2007BAF02B12); 燕山大学博士基金项目(B298) |
| |
| 摘 要： | 通过分析大型铸钢锭内部疏松缺陷的物理性质和变形特征，将疏松缺陷视为多孔可压缩材料，利用多孔可压缩材料的刚塑性有限元方法，建立了Cr5型支承辊钢锻件内部疏松缺陷锻造压实过程的非线性有限元模型。通过数值模拟，研究了上下V型砧锻造工艺下，疏松体缺陷的初始孔隙率、砧宽比、接触摩擦系数和压下量等因素对其致密压实效果的影响。在Gl...
|
| 关 键 词： | 疏松缺陷 多孔可压缩材料 孔隙率 锻造压实 刚塑性有限元方法 |
FEM ANALYSES ON COMPACTION OF POROSITY DEFECTS INSIDE HEAVY FORGINGS DURING HOT FORGING PROCESS |
| |
| HUANG Hua-gui,DU Feng-shan,XU Zhi-qiang.FEM ANALYSES ON COMPACTION OF POROSITY DEFECTS INSIDE HEAVY FORGINGS DURING HOT FORGING PROCESS[J].Engineering Mechanics,2011(9):245-250. |
| |
| Authors: | HUANG Hua-gui DU Feng-shan XU Zhi-qiang |
| |
| Affiliation: | HUANG Hua-gui1,DU Feng-shan1,2,XU Zhi-qiang1(1.College of Mechanical Engineering,Yanshan University,Qinhuangdao,Hebei 066004,China,2.Laboratory of Metastable Materials Science & Technology,China) |
| |
| Abstract: | The porosity defects in the heavy ingot can be treated as compressible material due to their similar physical property and deformation characteristics.Aiming at the forging process of large Cr5 typed steel backup roller,the paper established a non-linear FEA model for compacion process of porosity defects by means of the rigid-plastic finite element method for compressible material.From the numerical simulation results,the influence of the initial porousity,tool width ratio,contact friction coefficient and ... |
| |
| Keywords: | porosity defects porous compressible material porousity forging compaction rigid-plastic FEM |
| 本文献已被 CNKI 等数据库收录！ |
