|
摘要：
|
|
利用塑性稳定性分析理论研究了内高压成形工艺中出现的塑性屈曲失效力学行为。结果表明在一定的范围内 ,随着内压的增加 ,轴向临界屈曲载荷随着递增 ,为内高压成形工艺提供了理论保证 ;同时在不同的比例加载关系下 ,周向屈曲波数不尽相同 ,而且可能出现轴向临界屈曲载荷的“跳跃”现象 ,该现象的本质含义有待于深入研究
|
|
The plastic buckling, an ineffective mechanic behavior in internal high pressure forming, was studied by using the theory of plastic stability The results show that the critical buckling axial load will increase with the enhancement of the inner pressure, which provide the theoretical guarantee for internal high pressure forming And a "jumping" phenomenon, worthy of further investigations, will probably occur with different circumferential buckling waves under different proportional loading factors
|
|
基金项目：
|
|
国家自然科学基金资助项目 (599750 2 1 )
|
|
作者简介：
|
|
|
|
参考文献：
|
1 DSchmoeckel,CHielscher,MPrier.Developmentsandperspec tivesofinternalhigh pressureformingofhollowsections.6thICTPNuremberg,German.AdvancedTechnologyofPlasticity,1999(2):11711182
2 FDohamann,ChHartl.Hydroforming———amethodtomanufacturelight weightparts.JournalofMaterialsProcessingTechnology,1996(60):669676
3 MAhmetoglu,TAltan.Tubehydroforming:state of the artandfuturetrends.JournalofMaterialsProcessingTechnology,2000(98):2533
4 李洪洋管坯内高压液力成形工艺的实验研究与数值模拟哈尔滨工业大学硕士学位论文,1999.
5 周承倜薄壳弹塑性稳定性理论北京:国防工业出版社,1979
6 陈强静水压作用下加肋圆柱壳的屈曲分析清华大学工学博士学位论文,1994
7 吴林志’99全国固体力学学术会议简介力学进展,2000,30(1):156158
8 张旭环壳整体液压胀形工艺的研究哈尔滨工业大学工学博士学位论文,1998(3)
9 SThiruvarudchelvan,ACLua.Bulgeformingoftubeswithaxialcompressiveforce proportionaltohydraulicpressure.J .Mater.ShapingTechnol.1991(9):133142
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
