【摘 要】
：
为了更深入地认识钛合金铆钉成型时镦头内温度场的变化及其对绝热剪切带形成的影响,在ABAQUS平台上建立了3D有限元模型,综合考虑了材料的应变硬化、应变率硬化、热软化效应及
【机 构】
：
西北工业大学现代设计与集成制造教育部重点实验室,成都飞机工业(集团)有限责任公司,
论文部分内容阅读
为了更深入地认识钛合金铆钉成型时镦头内温度场的变化及其对绝热剪切带形成的影响,在ABAQUS平台上建立了3D有限元模型,综合考虑了材料的应变硬化、应变率硬化、热软化效应及摩擦和结构的非线性。计算表明:剪切带内应变高度集中,温升高达500℃,高温区域与剪切带基本重合,最高温度超过了其再结晶温度。
In order to understand deeply the change of temperature field in upsetting head and its influence on the formation of adiabatic shear band during the forming of titanium alloy rivets, a 3D finite element model was established on ABAQUS platform, considering the strain hardening, strain rate hardening , Thermal softening effect and friction and structural nonlinearity. The calculation shows that the strain in the shear band is highly concentrated and the temperature rises up to 500 ℃. The high temperature region basically coincides with the shear band and the maximum temperature exceeds the recrystallization temperature.
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