Recent earthquakes have highlighted the high vulnerability of the industrial structures that
are not specifically designed for accounting seismic forces. Among them, a widespread …

A novel mixed shell finite element (FE) is presented. The element is obtained from the
Hellinger–Reissner variational principle and it is based on an elastic solution of the …

The analysis of reinforced concrete shell structures accounting for material nonlinearity is
addressed. The structural response is numerically evaluated using a mixed shell finite …

This work presents an efficient fiber analysis for evaluating the shakedown safety factor of
three‐dimensional frames under multiple load combinations. Mixed finite elements are …

In this work an automatic procedure for evaluating the axial force-biaxial bending yield
surface of reinforced concrete sections in fire is proposed. It provides an accurate time …

This work introduces a mathematical problem named limit fire analysis for estimating the
structural safety of 3D frames in case of fire, taking into account the stress redistribution. It is …

The fiber model evaluates the normal stress at a number of points over the section for a
given strain increment following the plane section assumption and, by integration, axial force …

The paper presents a nonlinear concentrated plasticity frame element for advanced analysis
of steel frames exposed to elevated temperatures. The element extends the formulation …

A reduced order model for the nonlinear dynamic seismic analysis of elasto‐plastic 3D
frame structures is presented. It is based on an approximated solution space for the …

In this work, we present a new method of computation that we call zonoid calculus. It is
based on a particular class of convex bodies called zonoids and on a representation of …