线性参数对带圆孔弹性层脆性断裂的影响

IF 0.5 4区工程技术 Q4 MECHANICS

Journal of Applied Mechanics and Technical Physics Pub Date : 2023-10-01 DOI:10.1134/s0021894423050164

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引用次数: 0

摘要

摘要研究了弹性层中孔洞半径对由能量准则确定的断裂开始时刻临界外载荷的影响。通过相互作用弧的自由能流被用作断裂准则来描述临界外载荷与孔半径的关系。在自由能峰值点附近构建的相互作用弧的长度是通过线性参数确定的。引入的聚甲基丙烯酸甲酯层线性参数是通过已知实验数据获得的。线性参数的最大值可作为材料常数。

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EFFECT OF A LINEAR PARAMETER ON THE BRITTLE FRACTURE OF AN ELASTIC LAYER WITH A CIRCULAR HOLE

Abstract

The effect of a hole radius in an elastic layer on a critical external load at the moment of the onset of fracture, determined by the energy criterion, is investigated. A free energy flow through an interaction arc is used as a fracture criterion to describe the dependence of a critical external load on a hole radius. The length of the interaction arc constructed in the vicinity of a free energy peak point is determined using a linear parameter. The introduced linear parameter for a polymethyl methacrylate layer is obtained using known experimental data. The maximum value of the linear parameter can be taken as a material constant.

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来源期刊

Journal of Applied Mechanics and Technical Physics 物理-力学

CiteScore

1.20

自引率

16.70%

发文量

审稿时长

4-8 weeks

期刊介绍： Journal of Applied Mechanics and Technical Physics is a journal published in collaboration with the Siberian Branch of the Russian Academy of Sciences. The Journal presents papers on fluid mechanics and applied physics. Each issue contains valuable contributions on hypersonic flows; boundary layer theory; turbulence and hydrodynamic stability; free boundary flows; plasma physics; shock waves; explosives and detonation processes; combustion theory; multiphase flows; heat and mass transfer; composite materials and thermal properties of new materials, plasticity, creep, and failure.