High-Temperature Constitutive Equations of Q235 Galvanized Sheet

摘要

Based on a series of steady tensile tests and transient tensile tests of Q235 thin-walled galvanized sheet with depth of 2mm in elevated temperature using high temperature furnace, the formulas of high temperature mechanical property indexes and high temperature constitutive equations of the material were obtained. It was seen that the material had an obvious period of yielding when it was axially stretched at low temperature, however it didn't yield any more above 300°C. The formula of the high temperature constitutive equations presented here can be used for fire-resistance computation of the structure constructed with the material.