金属材料屈服强度参数的多模型自适应求取算法

金属材料的性能主要由几个关键参数决定,国家新标准GB/T228-2002《金属材料室温拉伸试验方法》对参数定义与获取有明确规定。但在实际应用中,屈服点的自动判断与屈服强度参数的自动获取,一直受金属材料屈服特征不明显或不显现而无法理想实现。这里从分析屈服点的具体形态入手,提出了多模型自适应求取屈服点及其强度的算法,给出了应用实例,该算法具有找点准确性好、适应能力强等优点。

Adaptive Algorithm of Questing Yield Strength Data in Metal Materials

The properties of metal materials are mostly determined by some key parameters,which are defined and stipulated in the new standard GB/T228-2002.The question how to quest the yield strength data of metal materials is still not solved because of internal and external factors in stretch tests.It puts forward a adaptive algorithm of questing yield strength data based on varied yield patterns in metal materials,and gives an example of its applications,which proves the algorithm has higher accuracy and better adaptation.