Experimental investigation of the multiaxial fatigue strength of ductile cast iron
Experimental investigation of the multiaxial fatigue strength of ductile cast iron
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DOI：
10.1016/j.tafmec.2014.07.003
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发表时间：
2014-10-01
影响因子：
5.3
通讯作者：
Maggiolini, E.
中科院分区：
文献类型：
--
作者：
Tovo, R.;Lazzarin, P.;Maggiolini, E.
本文介绍了铸铁的新实验多轴疲劳数据。取自真实大型部件的几组样本已在单轴和双轴、拉伸和扭转载荷下进行了测试；还考虑了同相和异相组合载荷。将所得结果与文献中的类似实验数据进行了比较，测试材料对扭转载荷下的剪应力平均值以及拉伸载荷下的拉应力平均值表现出高度敏感性。最合适的疲劳准则应与较大的主应力变化有关。这些材料对异相负载表现出异常的敏感性。 (C) 2014 Elsevier Ltd. 保留所有权利。
The paper presents new experimental multiaxial fatigue data on cast iron. Several sets of specimens, taken from a real large component, have been tested under uniaxial and biaxial, tensile and torsional loading; in-phase and out-of-phase combined loadings have also been considered. The obtained results have been compared with similar experimental data taken from the literature, and the tested material has shown high sensibility to the mean value of shear stress under torsional loading, as well as dependence on the mean value of tensile stress under tensile loading. The most suitable fatigue criterion should be related to the larger principal stress variation. The materials show an unusual sensibility to the out-phase loading. (C) 2014 Elsevier Ltd. All rights reserved.