A dynamic stability criterion for elastic–plastic structures under near-fault ground motions is derived in closed form. A negative post-yield stiffness is treated in order to consider the P-delta effect. The double impulse is used as a substitute of the fling-step near-fault ground motion. Since only the free vibration appears under such double impulse, the energy approach plays a critical role...

In this paper we address the question of deterministic cycles in a Ramsey model with heterogeneous in nite-lived agents and borrowing constraints, augmented to take into account the case of elastic labor supply. Under usual restrictions, not only we show that the steady state is unique, but also we clarify its stability properties through a local analysis. We nd that, in many cases, the introdu...

This paper discusses the buckling stability of elastic thin plates, deduces critical load calculation formula in detail, calculates simply supported rectangular plates using energy method, and analyzes longitudinal finite element software ANSYS. The results show that analysis can not only solve engineering problem plate quickly, but also accuracy is reliable.