Crash Barrier Impact Force Analysis

I need a clear, professionally documented set of impact-force calculations for a steel crash barrier measuring 8.5 m × 8.5 m. The scenario involves a truck striking the barrier head-on at 70 km/h, and I am interested specifically in the peak force the structure must resist.

Please base the work on recognised highway-safety or structural-dynamics methods (e.g., AASHTO, EN 1317, or equivalent) and show every step—from fundamental equations and assumptions to the final numeric result. Feel free to supplement hand calculations with FEA or dynamic simulation tools such as LS-DYNA, ANSYS, or SolidWorks Simulation if that streamlines the process, but the final submission must still include a transparent hand-calc or spreadsheet backbone that can be peer-reviewed.

Deliverables
• Calculation file (Excel, Mathcad, or PDF hand-calc) detailing formulas, inputs, unit conversions, safety factors, and the resulting impact force
• A concise technical note summarising methodology, standards referenced, and key assumptions
• Any supporting FEA/simulation files, screenshots, or graphs if numerical modelling is used

Acceptance will be based on clarity of the calculation trail, logical consistency with the provided speed, mass assumptions for a typical heavy truck, and alignment with the cited design standard.