الأبحاث

عبد الرحيم محمد عبده النجار

أستاذ متفرغ

كلية العلوم الرياضيات

Wave propagation in layered media under initial stresses

1996

Response of two internal resonant oscillators subjected to combined quadratic parametric and external excitation

1995

On the rotation of a non-homogeneous composite infinite cylinder of orthotropic material

1995

Principal parametric resonances of two-degree-of-freedom systems with quadratic and cubic non-linearities

1995

Harmonic, subharmonic, superharmonic, simultaneous sub/super harmonic and combination resonances of self-excited two coupled second order systems to multi-frequency excitation

1993

Response of self-excited three-degree-of-freedom systems to multifrequency excitations

1992

On the dynamical problem of a generalized thermoelastic granular infinite cylinder under initial stress

1992

Rayleigh waves in magneto-thermo-microelastic half-space under initial stress

1989

On a generalized thermo-elastic problem in an infinite cylinder under initial stress

1987

Dynamical problems of thermoelastic solids

1986

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Mathematics