中文摘要：

船板钢机械性能包括屈服强度、抗拉强度、断面收缩率以及冲击功,其机械性能取决于微观组织、钢的成分等因素,故应尽量减少化学成分波动对机械性能的影响.通过Matlab软件利用工业生产实际大数据建立不同元素含量下S含量与DH36船板钢机械性能的数学模型.研究发现DH36船板钢的冲击功随着S含量的升高呈先增后减的趋势.DH36船板钢的屈服强度、拉伸强度、断面收缩率均与S含量呈非线性关系,趋势与其他元素的含量有关.

英文摘要：

The mechanical properties of ship plate steel, such as yield strength, tensile strength, reduction of area and impact energy, are decided by the microstructure and steel composition. Therefore, it is highly advised to minimize the effect of chemical composition fluctuation on the mechanical properties. This paper established a mathematical model of sulfur content and mechanical properties of DH36 ship plate steel under different element content by applying the industrial production data and Matlab software. The results show that impact energy of the DH36 ship plate steel increases first, then drops, with the rising sulfur content. The yield strength, tensile strength and section reduction rate of DH36 ship plate steel are observed in a nonlinear relationship with the sulfur content, the tendency relating to the contents of other elements.