Progressive failure analysis of a composite army bridge

الملخص EN

Military composite bridges offer man unique advantages for the army including its lightweight (high strength-to-weight ratio), as compared to current steel and aluminum bridges, as well as their superior corrosion and fatigue resistance properties.

This paper presents the results of a comprehensive research program sponsored by the US Army to develop innovative field repair techniques for military composite bridge.

In this paper, a result of virtual testing and progressive failure analysis (PFA) simulation was conducted using the state-of-the–art simulator, GENOA, developed jointly by alpha star corp.

and NASA.

The virtual tests were performed on the composite tread way under three different loading cases.

The three cases used in this study are : i) maximum static shear loading cases, ii) maximum static flexural loading case and iii) fatigue progressive failure analysis for the maximum moment case loading.

the simulation result matched well the full-scale laboratory by the GENOA simulation for the maximum shear and those obtained from the full-scale tests was only 3.2 %.

in addition and type of damages at the ultimate load were very close to those obtained from full-scale laboratory tests.