装备经济寿命的一般规律研究

摘要

为研究装备经济寿命的变化规律，需要对装备经济寿命进行解析求解。经典的经济寿命模型未给出解析解，而是采取列表试算法，难以对经济寿命的影响因素进行分析。通过引入Lambert W函数，将装备经济寿命表示成影响因素的显式方程；在此基础上，分析了各影响因素对经济寿命的影响规律，归纳出提高经济寿命的方法。同时，为实现经济效益最大化，提出了最佳使用维修费增长率的概念，并给出了解析公式计算最佳使用维修费增长率的取值区间。算例验证表明，分析结论正确。%In order to study the rules of change of equipment economic life,it is necessary to find an analytical solution.Classical economic life models j ust adopt tabulation trial method instead of analytical solution,so it is impossible to analyze the influencing factors of the economic life.By intro-ducing Lambert W function,the paper expresses the equipment economic life as an explicit equation;based on above work,the paper analyzes the influencing rules of each influencing factor on the economic life and accordingly concludes a way to improve economic life.At the same time,for maxi-mize the economic benefit,the paper brings out a concept of the repair cost growth rate under the best utilization and gives an analytical equation to find out the value range of repair cost growth rate under the best utilization.The verification result of the example shows that the analysis conclusion herein is correct.