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本文介绍作者研究的以Z80型微型计算机为基础的内燃机曲轴强度考核程序系统。程序系统由内燃机动力计算、弹性支承连续梁计算、二维有限元素法网格自动生成和应力分析计算以及强度考核计算等多个程序组成。由动力计算和连续梁计算提供边界条件与有限元素法相结合可计算曲轴各拐不同时刻的位移、应变和应力,最后进行曲轴的强度考核计算。由于在强度考核计算中,考虑了残余应力的影响和工艺强化措施,使在哥德曼图基础上的强度考核更加接近实际。程序系统计算的曲轴应力和静动态应力测量结果对比,其偏差在工程上允许的范围之内。本程序系统可供内燃机科研、设计、制造和使用部门在考核曲轴强度时使用。
This article describes the author of the study of the Z80 Microcomputer-based engine crankshaft strength assessment program system. The program system is composed of many programs such as internal combustion engine dynamic calculation, elastic support continuous beam calculation, two-dimensional finite element method grid automatic generation, stress analysis and calculation and strength assessment calculation. Calculating the displacement, strain and stress of crankshafts at different moments by the combination of boundary conditions and finite element method from dynamic calculation and continuous beam calculation, and finally calculating the strength of crankshaft. As in the calculation of the strength test, taking into account the impact of residual stress and process enhancement measures, so that the strength test based on the Godeman chart closer to reality. Comparisons of crankshaft stress and static dynamic stress measured by the program system, the deviation of which is within the engineering allowable range. The program system for internal combustion engine research, design, manufacture and use of the department in the assessment of crankshaft strength used.