Abstract
The Rigid Bodies-Spring Model (RBSM) is a generalized model for discrete limit analysis, and assumes a rigid displacement field. For this reason, it cannot find the value of stress in each element. On the other hand, authors developed the Hybrid-type Penalty Method (HPM) which assumes the linear displacement field using the principle of hybrid type virtual work. In this paper, we proposed the method of finding for the stress in each element in RBSM by applying a rigid displacement field to the displacement field of this HPM. Furthermore, we proposed modified RBSM improving a rigid displacement using this result, and examined the accuracy of the solution obtained from some examples of numerical computation by present method.
