lengthwise

The effects of shell thickness and related height reduction on the longitudinal tensile strain of the slabs are analyzed.

采用三维弹塑性大变形热力耦合有限元法，模拟薄板坯连铸液芯铸轧过程中的坯壳变形，分析影响铸坯纵向伸长的主要因素，提出动态反向堆钢理论，对有限元模拟结果和在线热带生产（ＩＳＰ）工艺中的铸轧技术做出了合理解

The studies show that the longitudinal tensile strain of strand can be ignored for thin shell,but it can not be ignored for thick shell.

采用弹塑性大变形热力耦合有限元法，模拟薄板坯连铸液芯铸轧过程中的坯壳变形，指出液芯铸轧初始阶段坯壳较薄时铸坯纵向伸长可以忽略，但铸轧后期坯壳较厚时铸坯纵向伸长不能忽略。