Analysis of beams prestressed with hybrid (Steel/Carbon Fiber-Reinforced Polymer) tendons using the conservation of energy approach

•Energy Conservation Approach (CEA) is used to describe load versus deflection behavior.•Post-cracking curvature is idealized as parabolic shape to estimate beam deflection.•The stress in unbonded tendon is calculated using compatibility of deformation.•Simplified CEA shows that concrete non-linear behavior can be neglected after cracking.