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| 6061Al/SiCp淬火后残余应力对阻尼性能影响的模拟 | |
| 引用本文： | 顾金海,朱杰,于涛,王西科,张小农,顾明元. 6061Al/SiCp淬火后残余应力对阻尼性能影响的模拟[J]. 郑州大学学报(工学版), 2004, 25(2): 79-83 |
| 作者姓名： | 顾金海 朱杰 于涛 王西科 张小农 顾明元 |
| 作者单位： | 1. 上海交通大学金属基复合材料国家重点实验室,上海,200030 2. 濮阳职业技术学院,河南,濮阳,457000 3. 中原油田分公司采油工程技术研究院电潜泵研究所,河南,濮阳,457000 4. 郑州大学材料研究中心,河南,郑州,450002 |
| 摘 要： | 采用喷射共沉积方法制备了6061Al/SiCp金属基复合材料(MMC),利用有限元方法对其淬火态下的热残余应力和阻尼性能进行了模拟,计算结果表明,淬火态试样的基体材料中存在显著的残余拉应力,而且水淬态试样要高于干冰淬火态试样,根据位错阻尼机制,基体中的拉伸内应力将有助于位错的开动,从而降低了临界应变振幅的大小,提高了应变振幅相关效应,表现为内耗值有所改善.最后,实验结果再次验证了上述理论分析. |
| 关 键 词： | 6061Al/SiCp复合材料 残余应力 阻尼性能 有限元 |
| 文章编号： | 1671-6833(2004)02-0079-05 |
| 修稿时间： | 2004-02-05 |
Simulation of Effect of Residual Stress after Quenching on the Damping Capacity |
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| GU Jin-hai,ZHU Jie,YU Tao,WANG Xi-ke,ZHANG Xiao-nong,GU Ming-yuan ity,Shanghai ,China, .Puyang Vocational Technology College,Puyang ,China, .ESP Institute,Oil Production Engineering Technology Institute,Zhongyuan Oilfield Company,Puyang ,China, .Research Center for Materials,Zhengzhou University,Zhengzhou ,China). Simulation of Effect of Residual Stress after Quenching on the Damping Capacity[J]. Journal of Zhengzhou University: Eng Sci, 2004, 25(2): 79-83 | |
| Authors: | GU Jin-hai ZHU Jie YU Tao WANG Xi-ke ZHANG Xiao-nong GU Ming-yuan ity Shanghai China .Puyang Vocational Technology College Puyang China .ESP Institute Oil Production Engineering Technology Institute Zhongyuan Oilfield Company Puyang China .Research Center for Materials Zhengzhou University Zhengzhou China) |
| Affiliation: | GU Jin-hai~1,ZHU Jie~2,YU Tao~3,WANG Xi-ke~4,ZHANG Xiao-nong~1,GU Ming-yuan~1 ity,Shanghai 200030,China, 2.Puyang Vocational Technology College,Puyang 457000,China, 3.ESP Institute,Oil Production Engineering Technology Institute,Zhongyuan Oilfield Company,Puyang 457000,China, 4.Research Center for Materials,Zhengzhou University,Zhengzhou 450002,China) |
| Abstract: | 6061Al/SiC_p metal matrix composite (MMC) was fabricated by spray atomization and deposition firstly, then the thermal residual stress during quenching and its effect on the damping capacity of this material was simulated by using finite element method (FEM). The computational results reveal that the residual tensile stress exists obviously in the matrix of as-quenched specimens.According to dislocation damping mechanism, the residual tensile stress in the matrix will help activate the dislocation and decrease the critical strain amplitude, the strain amplitude-dependency of damping will consequently be improved, and thus, the damping of composite may be improved. Finally, the experimental results verify the above mentioned analysis again. |
| Keywords: | 6061Al/SiC_p MMC residual stress damping capacity finite element method |
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