1. Lecturer, Dept. of Steel Structures and Structural Mechanics, Politehnica Univ. of Timişoara, St. Ioan Curea 1, Timisoara 300224, Romania.
2. Associate Professor, Dept. of Steel Structures and Structural Mechanics, Politehnica Univ. of Timişoara, St. Ioan Curea 1, Timisoara 300224, Romania.
3. Associate Professor, Dept. of Steel Structures and Structural Mechanics, Politehnica Univ. of Timişoara, St. Ioan Curea 1, Timisoara 300224, Romania (corresponding author).
4. Professor, Dept. of Steel Structures and Structural Mechanics, Politehnica Univ. of Timişoara, St. Ioan Curea 1, Timisoara 300224, Romania; Senior Researcher 1, Romanian Academy—Timisoara Branch, Bd. Mihai Viteazul, No. 1, Timisoara 300223, Romania.