Optimal design of earth-moving machine elements with cusp catastrophe theory application

Innovations and Prospects of Development of Mining Machinery and Electrical Engineering

矿业工程;电工学

Pitukhin, A.V.^1 ; Skobtsov, I.G.^1

Petrozavodsk State University, 33, Lenin Str., Petrozavodsk

185910, Russia^1

关键词: Cusp catastrophe theories;    Earth moving machines;    Functional constraints;    Independent design;    Interval reductions;    Objective functions;    Protective structures;    Random search method;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/87/8/082038/pdf
DOI  :  10.1088/1755-1315/87/8/082038

来源: IOP

【 摘 要 】

This paper deals with the optimal design problem solution for the operator of an earth-moving machine with a roll-over protective structure (ROPS) in terms of the catastrophe theory. A brief description of the catastrophe theory is presented, the cusp catastrophe is considered, control parameters are viewed as Gaussian stochastic quantities in the first part of the paper. The statement of optimal design problem is given in the second part of the paper. It includes the choice of the objective function and independent design variables, establishment of system limits. The objective function is determined as mean total cost that includes initial cost and cost of failure according to the cusp catastrophe probability. Algorithm of random search method with an interval reduction subject to side and functional constraints is given in the last part of the paper. The way of optimal design problem solution can be applied to choose rational ROPS parameters, which will increase safety and reduce production and exploitation expenses.