Structure Optimization of Ladle Bottom Based on Finite Element Method
Ladle is an important container in metallurgy industry, and its lifetime is very important for the natural production of enterprise. The stand or fall of refractory lining of ladle decides its lifetime, yet thermal stress is the direct reason of causing refractory lining breakage. In this paper the structure of ladle mainly by changing the structure of bottom with finite element method is designed, and three scheme models are put forward. By analyzing and comparing stress field of the three ladle models, finally an optimization scheme is put forward. The experiment results indicate that the lifetime of ladle gains obvious increasement, and the rationality and practicability of the scheme have been proved. The method is feasible to improve ladle's lifetime.
Model of heating of the lining of a steel-teeming ladle
The thermal fields of the refractory linings of metallurgical equipment are investigated. Using as an example the lining of a steel-teeming ladle, mathematical modeling of the thermal fields in preliminary heating of the ladle and during smelting is performed. An approach to the construction of thermal fields, assuming the presence of defects in the lining and in the case of intersecting thermal fields, is proposed.
“Family” Support for Family Violence: Exploring Community Support Systems for Lesbian and Bisexual Women Who Have Experienced Abuse
ABSTRACT “Family” is a euphemistic term that lesbian, gay, bisexual, and transgender (LGBT) people use among ourselves to designate membership in lesbian, gay, bisexual, and transgender communities. Ironically, this “family” may be the most sought, yet least successful, support for dealing with the intimate partner violence that occurs within LGBT families. This study of 11 lesbian and bisexual women's experiences seeking support revealed several tiers of unmet needs within the LGBT community. They rarely used services in the general community, although these services are often the focus of both criticism and efforts to build support systems for LGBT victim/survivors. A model presents the different stages and potential sources of support.