Low Cycle Fatigue Behavior of Al7075-T651 Alloys under Axial-Torsional Load

机译：轴向扭转载荷下Al7075-T651合金的低周疲劳行为

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In this study, experimental results for the bi-axial low cycle fatigue of Al7075-T651 alloys arerngiven, to investigate the low cycle fatigue behavior for the material. Five current multi-axialrnfatigue life prediction models are also investigated to find the best model which can be correlatedrnwith the experimental results. But none of these models can explain the transitional behaviorrnfrom pure torsion to in-phase loading condition.rnTo Investigate this transitional behavior the tests were performed under in-phase bi-axial loadrnwith 10 different strain ratios and the behavior can be explained by introducing the critical strainrnratio. And the modified elliptical function based on Brown & Miller’s approach gave betterrnfatigue life prediction for Al7075-T651 alloy.

机译：在这项研究中，给出了Al7075-T651合金双轴低周疲劳的实验结果，以研究该材料的低周疲劳行为。还研究了五个当前的多轴疲劳寿命预测模型，以找到与实验结果相关的最佳模型。但是这些模型都不能解释从纯扭到同相载荷条件的过渡行为。为了研究这种过渡行为，在具有10种不同应变比的同相双轴载荷下进行了试验，通过引入临界应力可以解释该行为。应变比。基于Brown＆Miller方法的改进椭圆函数为Al7075-T651合金提供了更好的疲劳寿命预测。

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来源
《Asian Pacific conference for fracture and strength'99 (APCFS'99)》|1999年|p.1-15|共15页
会议地点 Xian(CN);Xian(CN)
作者
Hyun-Woo Lee;
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作者单位

School of Mechanical EngineeringrnPusan National University, Korea;

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原文格式 PDF
正文语种 eng
中图分类机械制造用材料;
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Low Cycle Fatigue Behavior of Al7075-T651 Alloys under Axial-Torsional Load

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