Natural frequency of transverse vibration of simply supported compound beams with rectangular cross-section;

In this paper a simplified evaluation method for latitude vibrations of beams of rectangular cross section (the modulus of elasticity in tension and compression is not equal) is proposed.

Microstructure of four-step 3D braided preform with complex rectangular cross sections;

In connection with machining of the stepped shaft,establishes a mechanics model of bending deflection,deduces a universal formula-an equation of deflective skew curve-for simply supported beam of variable cross-section bending deflection by integral calculus.