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Simulation of bridged crack closure in a contact pair bushing

机译:接触对套管中桥接裂纹闭合的仿真

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We use elasticity theory methods to obtain a mathematical description of the closure model for cracks with end regions, where the material adhesion forces acts, in the plunger bushing. It is assumed that, in the case of repeated reciprocating motion of the plunger, the friction fracture of the bushing material occurs owing to the contact interaction. Determining unknown parameters that characterize the crack closure is reduced to solving a system of singular integro-differential equations. We use an algebraization procedure to reduce the integral equations to a system of nonlinear algebraic equations, which can be solved by the successive approximation method. We find the normal and tangential contact forces, the forces in the bridges between the crack faces, and the dimensions of the contact end regions where the crack faces close.
机译:我们使用弹性理论方法获得了对柱塞衬套中带有端部区域的裂纹的闭合模型的数学描述,其中端部区域发生了材料附着力的作用。假设在柱塞反复往复运动的情况下,由于接触相互作用而发生了衬套材料的摩擦断裂。确定表征裂纹闭合的未知参数的过程被简化为求解奇异积分微分方程组。我们使用代数程序将积分方程简化为一个非线性代数方程组,可以通过逐次逼近法求解。我们找到法向和切向接触力,裂纹面之间的桥中的力以及裂纹面闭合的接触端区域的尺寸。

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