Team 3: Static and Dynamic Structural Modeling (MSDS)

Team leader: Professor GUENFOUD Salah CV

a). Overall objectives:

As it was mentioned before that the laboratory is combined of two main orientations, one experimental and the other theoretical, this team is in charge of the theoretical study (modeling) of the structures composed of new materials. The research conducted by this team focuses on dynamic computation in order to know the influence of the vibratory effect on these structures and to control their mechanical behavior.

The main task is therefore:

• Determine the frequencies and eigenmodes of structures taking into account the complicated mechanical and geometrical properties of their constituent materials;

• Excite these structures to specific dynamic loads, determine and analyze their responses;

• Introduction of damping systems in structures and analyze the impact of damping on its dynamic behavior;

• Combination of dynamic study for different types of external loads and deduce the conclusions;

• Construction of the calculation codes appropriate to this type of structures and comparison of results with experience.

b). Scientific Foundations:

The research activities of this team reside in:

• The calculation of the eigenfrequencies of structures composed of new materials aims to predict and avoid the phenomenon of resonance;

• The determination of the response of the structures caused by different external excitations makes it possible to avoid large amplitudes of vibration during its service;

• The introduction of depreciation in structures helps to better control its dynamic behavior;

• The combination of the different external loads in the dynamic calculation of the structures makes it possible to widen the area of ​​its commissioning;

• The construction of computer codes leads to the good training of doctoral researchers in terms of mastery of programming;

• Knowledge of the real behavior of these structures requires in-depth studies that take into account the mechanical characteristics of composite materials;

The solution of all these problems preventing the structure from fulfilling its function not only leads to its proper commissioning, but also to evaluating its integrity and utility which can be maximized and maintained.

Keywords:

Own frequencies, dynamic response, damping, dynamic constraints.