控制台梁的屈服点现象与循环塑性

IF 1.2 4区工程技术 Q3 ENGINEERING, MECHANICAL

Strojniski Vestnik-Journal of Mechanical Engineering Pub Date : 2017-09-14 DOI:10.5545/SV-JME.2017.4499

A. Žerovnik, I. Prebil, R. Kunc

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引用次数: 0

摘要

本文提出了屈服点现象(YPP)对控制台梁循环塑性的影响，目的是论证屈服点现象对控制台梁局部循环塑性的影响。通过实验和数值模拟研究了YPP对材料循环硬化或软化的影响及其依赖性。控制台横梁由正火状态(184 HV)和回火状态(296 HV)的低合金EN 42 CrMo 4钢制成，正火状态(184 HV)表现为循环硬化，回火状态(296 HV)表现为循环软化。对考虑运动硬化、各向同性硬化或软化的循环塑性本构模型进行了数值模拟，并建立了基于弹性区域表面在应力空间首次过渡到应力平台时的变化的YPP公式。分析结果表明，在循环塑性本构模型中考虑YPP方程的重要性，以及YPP对控制台梁循环塑性的影响。

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The Yield-Point Phenomenon and Cyclic Plasticity of the Console Beam

In the paper, the influence of the yield-point phenomenon (YPP) on cyclic plasticity of the console beam is presented with the objective to demonstrate the impact of the YPP on the local cyclic plasticity. The influence of the YPP and its dependence on cyclic material hardening or softening was studied through experiments and numerical simulations. Console beams are made from the low-alloy EN 42 CrMo 4 steel in its normalized state (184 HV), which exhibits cyclic hardening, and in its tempered state (296 HV), which is subject to cyclic softening. Numerical simulations were performed on constitutive model of cyclic plasticity taking into account the kinematic hardening, isotropic hardening or softening and formulations of the YPP which are based on the change of the elastic region surface in the stress space at first transition into the stress plateau. Analysis of the results shows the importance of taking into account the YPP equations in constitutive models of cyclic plasticity as well as the influence of the YPP on cyclic plasticity of the console beam.

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来源期刊

Strojniski Vestnik-Journal of Mechanical Engineering 工程技术-工程：机械

CiteScore

3.00

自引率

17.60%

发文量

审稿时长

4.1 months

期刊介绍： The international journal publishes original and (mini)review articles covering the concepts of materials science, mechanics, kinematics, thermodynamics, energy and environment, mechatronics and robotics, fluid mechanics, tribology, cybernetics, industrial engineering and structural analysis. The journal follows new trends and progress proven practice in the mechanical engineering and also in the closely related sciences as are electrical, civil and process engineering, medicine, microbiology, ecology, agriculture, transport systems, aviation, and others, thus creating a unique forum for interdisciplinary or multidisciplinary dialogue.