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Title:Dynamics simulation study on blade rolling process
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ClassificationCode:TG335.19
year,vol(issue):pagenumber:2013,38(1):76-80
Abstract:

The different parameters of effect on stress,strain and the law of metal flow in blade rolling process were studied. Through the establishment of mechanical model of blade rolling process,the effects of friction coefficient, rolling speed and rolling reduction on rolling stress-strain in the plastic deformation zone were analyzed. The complex surface model of blade mold was done through Pro/E software, and rolling system dynamics model of blade was established by using ANSYA/LS-DYNA software. Upper and lower rollers were treated as rigid body. The blade was treated as a linear elastic model. The effect of rolling friction coefficient parameters on rolling force was analyzed. The results show that due to the friction of the surface layer restriction, metal flow speed of blade surface is lower than middle`s, which results in uneven deformation. The changes of blade curvature have a direct impact on rolling stress-strain. Maximum stress and strain are mainly concentrated in the back side slope at the larger location, and stressstrain of blade will be increased as the increase of friction coefficient. The rolling force will be increased as the increase of rolling speed and rolling reduction.

Funds:
国家科技支持项目:汽车助力转向泵关键技术研究(2007BAF12B01)
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