Question

The Tresca and von Mises yield criteria concern the yielding of materials by plastic deformation. Which one of the following statements concerning these criteria is false?

Choose one of the following options.

Select one or more:

Neither criterion is suitable for predicting failure by brittle fracture.

The von Mises criterion is less conservative than the Tresca criterion.

Both criteria are based on principal stress differences.

Neither criterion is suitable for predicting yield under torsional stress.

Both criteria are empirical, based on experimental observation.

The Tresca criterion is mathematically simpler than The von Mises criterion.

The pin-jointed structure (PJS) shown in Figure 1 rests on a pinned support at A and a roller support at B. Which of the following statements best describes the statical determinacyof the PJS?

Choose one of the following options.

Select one:

Left hand side: mechanism – Right hand side: redundant

Statically determinate

Left hand side: mechanism – Right hand side: statically determinate

Statically indeterminate: two redundancies

Statically indeterminate: one redundancy

Unstable (mechanism)

Answer 1

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