Constrained optimization is very important issue in engineering design. The problem of constrained contains the objective function with linear and nonlinear constraint equations. In this paper Improved Cuckoo Search (ICS) algorithm has been applied for solving problems optimization, which gives better solutions than standard CS other algorithms used from literature. proposed ICS algorithm, dynamic change parameters probability step size introduced, are constant algorithm.

This paper considers optimal synthesis of a four-bar linkage by method controlled deviations. The advantage this approximate is that it allows control motion the coupler in so path prescribed environment around given on segment observed. Hooke-Jeeves?s optimization algorithm has been used process. Calculation expressions are not as direct searching, i.e. individual comparison calculated value objective function made each iteration and moving done direction decreasing function. does depend...

The topic of this paper is the usage algorithm marine predator (MPA) in optimization suspension rail vehicles with coil springs. aim to reduce mass set springs as main parts suspension. optimized must satisfy appropriate conditions related characteristics, achieving required operation quality and running security observed vehicle. Starting from bi-linear characteristic analytical description its parameters, an problem formulated. It composed six objective function 16 constraints (eight for...

In this paper, Subpopulation Firefly Algorithm is proposed for optimization of machining parameters in multi-pass turning and face milling operations. Basic modified with the aim to avoid space local minimum meet operation constraints each iteration step. For that purpose, following modifications are made: one firefly population divided into two, a crossover operator introduced searching new design variables continued until constraint functions fulfilled. operation, carried out objective:...

The proper choice of material and geometric properties the girder bridge crane can significantly reduce its weight production cost. This research presents optimization main with a non-symmetric box-like cross-section. strength analysis in characteristic points critical cross-section local stability plates were conducted using Eurocodes. study aimed to prove that geometry for their additional design elements have meaningful impact on weight. procedure was done Water Evaporation Optimization...

This paper proposes the application of biologically -inspired algorithms to determine optimal parameters metal cutting. The objective functions are operation time, cost per product, and surface roughness. Model cutting is non-linear, constrained problem. As an example algorithm for solving optimization problems, in this we have applied Cuckoo search algorithm, Firefly algorithm. Contemporary analysis these two methods, as well their hybridization experimental results show that use applicable...

The cross sections of truck crane booms are complex box-like sections, which should provide continuous stress allocation.It is difficult to analytically determine optimal relations among geometric parameters such sections.The paper deals with the method for determining in order achieve shape section.The based on Lagrange's multipliers used determination extreme values.The optimisation has also been done differential evolution (DE).The section strength criterion.The results applied methods...

AbstractThe paper considers dimensional synthesis of a path generator four-bar linkage by applying the modified Differential Evolution (DE) algorithm. During search space, DE algorithm may skip right solution and lead to premature convergence. If step is reduced, space reduced as well, so that convergence becomes slower. Search efficiency be achieved including Lévy Flight in Namely, when identifies best solution, then Levý used for local region, which significantly increases exploitation...

This paper presents two ways for the minimization of joint reaction forces due to inertia (dynamic forces) in a degrees freedom (2-DOF) planar serial manipulator. The first way is based on optimal selection angular rotations laws manipulator links and second one by attaching counterweights links. influence payload carrying dynamic also considered. expressions are obtained symbolic form means Lagrange equations motion. inertial properties represented dynamical equivalent systems point masses....

The paper deals with the usage of grey wolf optimiser (GWO) in optimal design leaf springs railway vehicles. main goal is minimisation mass spring, retention required characteristics suspension system. Based on exposed analytical model and requirements for system, an optimisation developed. developed GWO are applied spring 4-axled freight wagon axle load 200 kN. obtained results have shown that proposed provide significant reduction about 46.7%, relation to conventional method. In addition,...

Polynomials of a degree higher than 8th used for the rise phase displacement curve cam profile were optimized gaining minimal jerk using search and rescue optimization algorithm. The algorithm was to obtain polynomial coefficients polynomials that cannot be calculated by analytical approach without adding additional boundary conditions other displacement, velocity acceleration in characteristic positions. from which optimal value can obtained determined, as well after results give worse values jerk.

Comparative testing of three modified metaheuristic algorithms - the cyclic algorithm bat family (Loop BFA), hybrid cuckoo search and firefly (H-CS-FA) krill herd (MKH)was performed in paper. The authors tested these relation to original ones effectiveness modifications was confirmed for each individual algorithm. Here, all verified on two engineering problems field metal cutting optimization body turning knife eccentric clamping tool. In both cases, multi-objective with objective functions...