This work provides a numerical analysis of the stress concentration factor in an elastic solid containing non-aligned and non-concurrent circular holes subjected to an internal pressure. Using Finite Element Analysis, a variety of systems with a range of geometric configurations and loading conditions were simulated and the trends observed were analysed using a qualitative and statistical analysis in order to determine the correlation between these factors and the maximum stress concentration in these systems. Furthermore, simple empirical models were calibrated on the simulation results and used to plot reference graphs which may be employed to predict the stress concentration factor of these systems according to several geometric parameters and loading conditions. The numerical results and the empirical models presented here also show good agreement with previously derived analytical results based on 2D models and are expected to provide a useful tool for the designer of such systems especially for fatigue problems in fluid-power systems, where a straightforward evaluation of the stress concentration factor in pressurized hole systems is needed.

这项工作提供了弹性固体中应力集中因子的数值分析，该弹性固体包含受到内部压力的非对齐和非并发圆孔。使用有限元分析，模拟了具有一系列几何配置和负载条件的各种系统，并使用定性和统计分析来分析观察到的趋势，以确定这些因素与这些系统中的最大应力集中之间的相关性。此外，简单的经验模型根据模拟结果进行校准，并用于绘制参考图，可用于根据几个几何参数和加载条件预测这些系统的应力集中系数。