型砂本构关系的试验研究及压实造型的有限元模拟

Experimental research of constitutive relation of molding sand & FE simulation of compression moulding

在铸造生产的造型方法中,压实过程作为最终紧实的主要手段之一,在射压、静压等许多主要的现代造型方法中都必须采用。作为最终紧实过程的主要手段之一,对压实过程进行数值模拟仍然是必要的。本文运用土力学中的侧限压缩试验方法测定了型砂的本构关系建立了力学分析的基础,在Ansys软件平台中采用APDL语言进行二次开发编程,对湿砂造型中的压实造型过程进行数值模拟,取得了较好的结果。

APDL language has been used in Ansys software platform to program.for second development, realizing numerical simulation with desired results, based on mechanics analysis which had been built with constitutive relation determined with side limit compression test of soil mechanics.