5篇
您的检索式：作者名="Dunming Zhang"
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| 1 | Using finite difference method to simulate casting thermal stress显示文摘Thermal stress simulation can provide a scientific reference to eliminate defects such as crack,residual stress centralization and deformation etc.,caused by thermal stress during casting solidification.To study the thermal stress distribution during casting process,a unilateral thermal-stress coupling model was employed to simulate 3D casting stress using Finite Difference Method(FDM),namely all the traditional thermal-elastic-plastic equations are numerically and differentially discrete.A FDM/FDM numerical simulation system was developed to analyze temperature and stress fields during casting solidification process.Two practical verifications were carried out,and the results from simulation basically coincided with practical cases.The results indicated that the FDM/FDM stress simulation system can be used to simulate the formation of residual stress,and to predict the occurrence of hot tearing.Because heat transfer and stress analysis are all based on FDM,they can use the same FD model,which can avoid the matching process between different models,and hence reduce temperature-load transferring errors.This approach makes the simulation of fluid flow,heat transfer and stress analysis unify into one single model. | Liao Dunming Zhang Bin Zhou Jianxin Liu Ruixiang Chen Liliang | 2011 | China Foundry2011，8，2： | 6 |
| 2 | Microemulsion polymerization of siloxane with nonionic surfactants as emulsifiers显示文摘 | Dunming Zhang Xiqun Jiang Changzheng Yang | 2003 | Journal of Applied Polymer Science2003，89，： | 1 |
| 3 | Synthesis and piezoelectric properties of lead-free (Bi0.5Na0.5)1?x (BaaSrb) x TiO3 ceramics显示文摘 | Yan Hongjian Xiao Dingquan Zhu Jianguo Yu Ping Li Linzhi Lin Dunming Li Guiying Zhang Wen | 2005 | Journal of Wuhan University of Technology - Mater Sci Ed2005，，4： | 1 |
| 4 | Microemulsion pol- ymerization of siloxane with nonionic surfactants as emulsifiers 显示文摘 | Dunming Zhang Xiqun Jiang Changzheng Yang | 2003 | J Appl Polym Sci2003，89，： | 1 |
| 5 | The clinical comparison of simultaneous bilateral total knee arthroplasty in treatment of osteoarthritis显示文摘Objective: To evaluate the risk and efficacy of simultaneous bilateral total knee arthroplasty(TKA) in treatment of osteoarthritis when compared with sequential bilateral TKA and unilateral TKA. Methods:A retrospective analysis was performed on 162 patients who underwent TKA from 2003 to 2006. The analyses were adjusted for demographics, preexisting medical conditions, and osteoar- thritis diagnosis. Results:Patients undergoing simultaneous bilateral TKA had significantly lower amounts of blood loss, shorter surgical time, shorter hospitalization time, less hospital charges and lower rates of perioperative complications compared with patients undergoing sequential bilateral TKA. No significant difference was found with regard to postoperative complications between the simultaneous bilateral and the unilateral TKA groups. Patient’s knee range of motion and the postoperative Hospital for Special Surgery scores(HSS) were similar for the three groups. Conclusion:When there are adequate indications for bilateral TKA, simultaneous bilateral TKA is beneficial to patients compared with sequential bilateral or unilateral TKA. | Jun Hu Dunming Guo Zheng LU Jie Liu Xialin Yu Zhongnan Zhang | 2008 | Journal of Nanjing Medical University2008，22，3： | 1 |
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