collapse load of aluminum; &miled steel tubes; straight nes of arms corner radius; Friction between the platens
Experiments to determine the collapse load of aluminum and mild steel tubes,
of square and rectangular cross-sections, between parallel rigid platens were
carried out in an Instron machine. A two stage analysis for the collapse of
these tubes was carried out by considering the out-of-straightness of arms,
corner radius, Jriction between the platens and the specimen and stability of
the vertical arms. Results thus obtained compare well with experiments.