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首页> 外文会议>AIST steel properties amp; applications conference proceedings combined with MSamp;T' 10 materials science and technology 2010 >A Lower-bound Strength Model for AISI 304 SS
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A Lower-bound Strength Model for AISI 304 SS

机译：AISI 304 SS的下限强度模型

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摘要

The use of a material in a design where failure carries environmental or health and safety risk requires computational design using a conservative strength model. The materials design engineer must determine and be able to justify a lower-bound stress strain curve. This paper uses the AISI 304 / 304L system to demonstrate how such a model might be derived. It addresses the question of variability in materials properties. Also discussed is the contribution of strain-rate dependence. Designers and those reviewing and approving designs are more comfortable with temperature dependence than strain-rate dependence. This can lead to overly conservative designs, even when the objective is a conservative design. The Mechanical Threshold Stress model is used to demonstrate in the 304 / 304L system a lower-bound temperature and strain-rate dependent constitutive model.
机译：在设计中使用会导致环境，健康和安全风险的失效材料时，需要使用保守强度模型进行计算设计。材料设计工程师必须确定并能够证明较低的应力应变曲线。本文使用AISI 304 / 304L系统来演示如何推导这样的模型。它解决了材料特性的可变性问题。还讨论了应变率依赖性的贡献。设计师以及那些审阅和批准设计的人对温度的依赖性要比对应变率的依赖性更舒适。即使目标是保守设计，也可能导致过于保守的设计。机械阈值应力模型用于说明304 / 304L系统中的下限温度和应变速率相关本构模型。

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