圓坯三輥斜軋過程的三維有限元熱-力耦合分析

Three Dimensional Finite Element Analysis on thermal force Coupling Concerning Three-high Cross-rolling Process with Round Billet

摘要: 用非線性有限元分析軟件MSC.MARC/Autoforge,對圓坯三輥斜軋過程進(jìn)行了三維彈塑性熱-力耦合模擬仿真,得到了應(yīng)力、應(yīng)變場和溫度分布。發(fā)現(xiàn)圓坯三輥斜軋時的應(yīng)變強(qiáng)度在軋件縱剖面上的分布形態(tài)與圓坯二輥斜軋極為相似,也呈“W”型。在相同軋輥傾角條件下,圓坯三輥斜軋時變形分布的不均勻性明顯比二輥斜軋時大。

Abstract: Addressing the three-high cross-rolling process with round billet, a three dimensional plasticity heat-force coupling simulation is conducted with a non-linear FE analysis software named MSC. MARC/Autoforge, resulting in parameters namely, the stress, the strain field and the temperature distribution. It is identified that the distribution pattern of strain strength on the rolled piece longitudinal section during three-hi cross-rolling process with round billet is very similar to that during two-hi cross-rolling process with round billet, i.e. both appear in a "W" pattern. Also recognized is that with the same roll tilting angle, the unevenness of deformation distribution with the former process is much more obvious than that with the latter.