A new displacement bound technique, which is based on concept of admissible fields has been developed for rigid Plastic continua Construction Set Toys subjected to strong dynamic loading at large deflections, the lower hound obtained (2.11) depends on kinematic ally admissible displacement ui and kinematic ally admissible velocity ui* which must be chosen so that the condition Books (2.14) may be satiafidc.
Parameter T* would be determinated by maximizing the right hand side of (2.11).