Cold-formed steel members filled with ultra-high-performance concrete (UHPC) have gained increasing attention in modern structural engineering due to their excellent mechanical performance, durability, and potential for lightweight, high-load-bearing applications. In particular, square cold-formed UHPC-filled dual steel stiffened slender columns consist of an outer cold-formed steel tube, an inner steel or ...

Bolted steel splice connections play a critical role in the continuity and integrity of structural steel members. During a fire, these connections are subjected to extreme thermal and mechanical demands that can significantly alter their performance. Understanding their behavior under elevated temperatures is essential for ensuring the fire resilience of ...

In this example, the RT-PMMA is modeled as a three-dimensional solid part, while the CFRP composite material is modeled as a shell part. To represent the RT-PMMA behavior under high-velocity impact, the elastic–extended Drucker–Prager plasticity model and a ductile damage formulation are used. Hashin’s damage criterion is applied to the ...

Super-austenitic stainless steels (SASS), distinguished by their high alloy content and superior corrosion resistance, have emerged as promising materials for blast-resilient structures operating in harsh marine environments. When configured as sandwich panels with metallic face sheets and lightweight cores, they offer a favorable combination of strength, ductility, and energy absorption. ...