Search Results - "Perego, U."

An efficient runtime mesh smoothing technique for 3D explicit Lagrangian free‐surface fluid flow simulations by Meduri, S., Cremonesi, M., Perego, U.

“…Summary A fast runtime mesh smoothing algorithm for explicit Lagrangian simulations of 3D weakly compressible viscous fluid flows, implemented in conjunction…”
Get full text

A partitioned fully explicit Lagrangian finite element method for highly nonlinear fluid‐structure interaction problems by Meduri, S., Cremonesi, M., Perego, U., Bettinotti, O., Kurkchubasche, A., Oancea, V.

“…Summary In this work, a fully explicit partitioned method for the simulation of Fluid Structure Interaction (FSI) problems is presented. The fluid domain is…”
Get full text

A constitutive model for the mechanical response of the folding of creased paperboard by Giampieri, A., Perego, U., Borsari, R.

“…Paperboard is a widely used material in industrial processes, in particular for packaging purposes. Packages are obtained through a forming process, in which a…”
Get full text

A Lagrangian finite element approach for the simulation of water-waves induced by landslides by Cremonesi, M., Frangi, A., Perego, U.

“…In the present investigation we apply a pure Lagrangian finite element method to simulate nonlinear water waves due to landslides, of interest to ocean,…”
Get full text

A chemo-thermo-damage model for the analysis of concrete dams affected by alkali-silica reaction by Comi, C., Fedele, R., Perego, U.

“…A chemo-thermo-damage model is proposed to simulate the swelling and the deterioration of local stiffness and strength in concrete due to the alkali-aggregate…”
Get full text

A Lagrangian finite element approach for the analysis of fluid-structure interaction problems by Cremonesi, M., Frangi, A., Perego, U.

“…A Lagrangian finite element method for the analysis of incompressible Newtonian fluid flows, based on a continuous re‐triangulation of the domain in the spirit…”
Get full text

Computationally efficient explicit nonlinear analyses using reduced integration-based solid-shell finite elements by Pagani, M., Reese, S., Perego, U.

“…Solid-shell formulations based on reduced integration with hourglass stabilization have several advantages. Among these are the smaller number of Gauss points…”
Get full text

An explicit dynamics GPU structural solver for thin shell finite elements by Bartezzaghi, A., Cremonesi, M., Parolini, N., Perego, U.

“…•Double precision explicit dynamics shell finite element solver on GPU.•Reformulation of finite element central difference algorithm for optimization on…”
Get full text

Selective mass scaling for distorted solid-shell elements in explicit dynamics: optimal scaling factor and stable time step estimate by Cocchetti, G., Pagani, M., Perego, U.

“…SummaryThe use of solid‐shell elements in explicit dynamics has been so far limited by the small critical time step resulting from the small thickness of these…”
Get full text

Simulation of the flow of fresh cement suspensions by a Lagrangian finite element approach by Cremonesi, M., Ferrara, L., Frangi, A., Perego, U.

“…In this paper a Lagrangian formulation of the Navier–Stokes equations, based on a Particle Finite Element Approach, is applied to the simulation of rheological…”
Get full text

Lagrangian–Eulerian enforcement of non-homogeneous boundary conditions in the Particle Finite Element Method by Cremonesi, M., Meduri, S., Perego, U.

“…The Particle Finite Element Method (PFEM) is a Lagrangian finite element method with frequent remeshing, particularly suited for the simulation of fluid…”
Get full text

An interface finite element for the simulation of localized membrane-bending deformation in shells by Giampieri, A., Perego, U.

“…► Formulation of an interface shell element for the simulation of localized folding. ► Kinematic definition of rotation free large straining modes of the…”
Get full text

A phase-field gradient-based energy split for the modeling of brittle fracture under load reversal by Ferreira, A.R., Marengo, A., Perego, U.

“…In the phase-field modeling of fracture, the search for a physically reasonable and computationally feasible criterion to split the elastic energy density into…”
Get full text

A unified approach for variationally consistent finite elements in elastoplasticity by Comi, C., Perego, U.

“…A general, variationally consistent approach for elastoplastic finite element analysis is presented. A weak formulation of the finite-step (i.e. in terms of…”
Get full text

A GENERALIZED VARIABLE FORMULATION FOR GRADIENT DEPENDENT SOFTENING PLASTICITY by COMI, C., PEREGO, U.

“…A mesh‐independent finite element method for elastoplastic problems with softening is proposed. The regularization of the boundary value problem is achieved…”
Get full text

Selective mass scaling and critical time-step estimate for explicit dynamics analyses with solid-shell elements by Cocchetti, Giuseppe, Pagani, Mara, Perego, Umberto

“…► Explicit dynamics analysis with solid-shell is of interest in many applications. ► Excessively small stable time-step due to element small thickness. ►…”
Get full text

Selective mass scaling for distorted solid-shell elements in explicit dynamics: optimal scaling factor and stable time step estimate: SELECTIVE MASS SCALING FOR DISTORTED SOLID-SHELL ELEMENTS by Cocchetti, G., Pagani, M., Perego, U.

Get full text

Fracture energy based bi-dissipative damage model for concrete by Comi, Claudia, Perego, Umberto

“…An isotropic damage model for concrete is presented. The main features of the model are: limited number of constitutive parameters required; independent…”
Get full text

Extended finite element method for quasi-brittle fracture by Mariani, Stefano, Perego, Umberto

“…A methodology for the simulation of quasi‐static cohesive crack propagation in quasi‐brittle materials is presented. In the framework of the recently proposed…”
Get full text

Symmetric Galerkin boundary element method in plasticity and gradient plasticity by MAIER, G, MICCOLI, S, NOVATI, G, PEREGO, U

Get full text