Publications de Diego Isidoro Heredia Rosa

A Multiaxial Plasticity Model with Softening for Simulating Inelastic Cyclic Local Buckling in Steel Beam Columns Using Fiber Elements

Dimitrios Lignos, Albano António De Abreu E Presa De Castro E Sousa, Diego Isidoro Heredia Rosa

This paper proposes a new effective multiaxial plasticity model to simulate inelastic cyclic buckling in steel frame members. The proposed constitutive formulation is expressed within the framework of rate-independent metal plasticity and replicates the pr ...

American Society of Civil Engineers (ASCE)2025

A Multiaxial Plasticity Model with Softening for Simulating Inelastic Local Buckling in Steel Beam Columns under Monotonic Loading through Fiber Elements

Dimitrios Lignos, Diego Isidoro Heredia Rosa

This paper proposes a novel multiaxial plasticity model for 3-dimensional nonlinear static analysis of steel frame buildings with fiber-based beam-column elements. The proposed constitutive formulation is expressed within the framework of rate-independent ...

2025

Simulating Interactive Buckling in Steel Members Using a Torsional Fiber Element Integrated with a Multiaxial Local Buckling Constitutive Model

Dimitrios Lignos, Albano António De Abreu E Presa De Castro E Sousa, Diego Isidoro Heredia Rosa

American Society of Civil Engineers (ASCE)2025

A Novel Fiber Element to Simulate Interactive Local and Lateral Torsional Buckling in Steel Moment Frames

Dimitrios Lignos, Diego Isidoro Heredia Rosa

All rights reserved.Structural collapse in steel frames under extreme hazards (earthquake, blast etc.) can often be attributed to loss of load carrying capacity of the individual members. Dominant failure modes in structural steel members include interacti ...

Structural Stability Research Council2024

A Softening Constitutive Law and Gradient-Inelastic Fiber-Based Element for 3-Dimensional Frame Simulations Under Seismic Excitations

Diego Isidoro Heredia Rosa

Steel frame structures are essential components of modern infrastructure. Understanding their behavior under seismic loading is critical for ensuring public safety and minimizing damage that occurs during earthquakes. To accurately predict the response of ...

EPFL2024

A Displacement-Based Fiber Element to Simulate Interactive Lateral Torsional and Local Buckling in Steel Members

Dimitrios Lignos, Albano António De Abreu E Presa De Castro E Sousa, Diego Isidoro Heredia Rosa

Collapse in steel structures is often controlled by loss of load carrying capacity of steel columns due to interactive buckling, which involves interactions between local and global (i.e., lateral and lateral torsional) buckling. Commonly used concentrated ...

ASCE-AMER SOC CIVIL ENGINEERS2023

Experimental behavior of iron-based shape memory alloys under cyclic loading histories

Dimitrios Lignos, Albano António De Abreu E Presa De Castro E Sousa, Diego Isidoro Heredia Rosa, Masoud Motavalli, Alexander Riley Hartloper, Elyas Ghafoori

The present paper investigates the behavior of iron-based shape memory alloys (Fe-SMAs) subjected to cyclic inelastic straining by means of uniaxial coupon experiments. The tests feature round bar coupons subjected to a broad range of uniaxial cyclic strai ...

2021

Behavior of iron-based Shape Memory Alloys under Cyclic Loading Histories

Dimitrios Lignos, Albano António De Abreu E Presa De Castro E Sousa, Diego Isidoro Heredia Rosa, Masoud Motavalli, Alexander Riley Hartloper

Shape memory alloys (SMAs) have gained considerable attention in a broad range of engineering applications. In particular, iron-based SMAs (Fe-SMAs) have been recently developed and used as a cost-effect method for prestressed-strengthening of civil struct ...

2019