摘要
针对六面顶压机顶锤上应力测试的难题,运用有限元分析软件ANSYS的接触分析方法,建立了SPD6×2000MN型六面顶压机顶锤应力的计算模型。计算出了顶锤、钢环、垫块的应力值,绘制出了Von Mises应力云图。云图分析表明,在拉剪复合应力状态下,引起顶锤崩溃的裂纹源萌生于高压砧面边缘(得到实验验证);证明了内部材料缺陷在剪切应力作用下的屈服是导致顶锤高压砧面边缘处形成裂纹的原因;调整钢环过盈量可降低顶锤消耗。
To aim at the problem of the stress distribution test on the anvil, a contact analysis is carried out on anvils of cubic apparatus using finite element analysis software ANSYS. As a result, a model regarding the anvils of SPD6 × 2000MN cubic apparatus is established. With the help of this model, the stress distribution of anvil, steel ring, and cushion block are calculated at specific load, and Von Mises stress distribution graphics is displayed in ＂POST1 ＂contour plot. The graphics reveals that, under the comound destruction states of pulling forces and shear stress, cracks where the anvil collapse occurs generate from the edge of the high-pressure anvil face （already proven by experiment） and it was also proven that the yield happens under the action of shear stresses in the internal material and the fault of construction. It is because of this yield, cracks produce on the edge of anvil. This situation could be improved by adjusting the tightness of the steel ring.
出处
《重型机械》
2007年第3期27-31,共5页
Heavy Machinery
基金
国家自然科学基金项目(50572032)
