摘要
以2A11铝合金材料为例,采用美国MTS公司生产的MTS 810 Material Test system对棒材试样作简单拉伸试验。运用Matlab的多项式运算函数对拉伸试验真应力-自然应变曲线非线性均匀变形阶段进行拟合,建立了真应力-自然应变本构方程;误差分析表明,精度较高。研究结果为铝合金材料真应力-自然应变本构方程的建立提供了新的方法,对工程实际应用具有很好的指导意义和参考价值。
Taking 2All Al-alloy for example, a simple tensile test to bar stock with MTS 810 material test system was done. The muhinomial arithmetic function was applied to the curve-fitting in the middle of non-linear uniform deformation stage of actual stress-natural strain curve of Al-alloy tensile test and the constitutive equation was established. The error analysis indicates the method has high precision. The research results provide a new method for establishing constitutive equations of Al-alloy on actual stress-natural strain and have better guide significance and reference value in engineering applications.
出处
《实验室研究与探索》
CAS
2005年第12期35-37,共3页
Research and Exploration In Laboratory
