Contributions to the Study of Dynamic Absorbers, a Case Study

Dynamic absorbers are used to reduce torsional vibrations. This paper studies the effect of a dynamic absorber attached to a mechanical system formed of three reduced masses which are acted on by one, two or three order x harmonics of a disruptive force

CHALLENGES IN THE 3D MODELING OF A FIELD CULTIVATOR FOR SOIL PREPARATION

Prior to planting, the soil must be prepared usually by machines called cultivators. Older field cultivators are suitable for modification for row cropping. The crops and the tractor power available will determine specific needs. Factors to consider include row spacing and row spacing flexibility, whether you need a towed or tractor mounted unit, frame size and layout, ease of levelling, ease of moving, removing, and replacing shanks, overall machine condition, and the robustness of the shanks. The paper describes the struggle concerning the 3D modelling of such a field cultivator with special features

Contributions to the Study of Dynamic Absorbers, a Case Study

Dynamic absorbers are used to reduce torsional vibrations. This paper studies the effect of a dynamic absorber attached to a mechanical system formed of three reduced masses which are acted on by one, two or three order x harmonics of a disruptive force

THEORETICAL CONSIDERATIONS REGARDING THE CONSTRUCTION OF TETRAHEDRON

The paper presents an analytical study on different theoretical aspects regarding the construction of the tetrahedron. It covers some of the particular construction cases which use descriptive geometry methods. Starting from these cases, one can also construct other particular cases. The matter seems simple enough, yet some of the cases require more complex solutions