基于凝固相转变影响的结晶器内热力耦合分析

doi:10.13228/j.boyuan.issn0449-749x.20150177

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Abstract In order to study the effect of the solidification phase change on shell growth process in the mold，based on experimental results of high temperature phase transformation，an analysis model was established，considering the contact behavior of the billet and mold. Then a fully thermo-mechanical coupled 3D transient thermo-elastic-plastic model was established by ANSYS software，using the element birth and death technology to simulate temperature field，3D Thermal elastic-plastic contact finite element method was applied to calculate the stress distribution. The variation of temperature and stress filed inside the mold is simulated under the condition of[δ]ferrite transformation content of 0%，50%，100%，respectively. The results show that，shell surface temperature and thickness fluctuate periodically along the casting direction，which occur 120 mm below the meniscus，and with the increase of[δ]ferrite transformation amount，the fluctuation will increase. With the change of[δ]ferrite increased along the casting direction the total cumulative displacement and stress values are reduced，and the stress and displacement level of volatility both increase along the casting direction.

Received: 22 April 2015 Published: 27 January 2016

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TF777.1

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	GENG Shu-Qing

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GENG Shu-Qing. Coupled thermo-mechanical analysis in mold based on influence of solidification phase change[J]. Iron and Steel, 2016, 51(2): 55-61.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20150177 OR http://www.chinamet.cn/Jweb_gt/EN/Y2016/V51/I2/55

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