In a closed die forging process, it is impossible to form complex shapes in one stage, and thus it becomes necessary to use preform dies. In the present study, Backward Deformation Method and FE simulation via ABAQUS software has been used in order to design preform die of the H-shaped parts. In the Backward Deformation Method, the final shape of the part is considered as a starting point and u...

In a closed die forging process, it is impossible to form complex shapes in one stage, and thus it becomes necessary to use preform dies. In the present study, Backward Deformation Method and FE simulation via ABAQUS software has been used in order to design preform die of the H-shaped parts. In the Backward Deformation Method, the final shape of the part is considered as a starting point and u...

Compensation is widely used in advanced transaction models as a means of backward recovery from a failure. However, traditional compensation notions are not sufficient for handling failures in business processes if state changes involve consumable resources that cannot be undone. This paper presents a backward recovery mechanism to support the business process management domain. The proposed me...

Compensation is widely used in advanced transaction models as a means of backward recovery from a failure. However, traditional compensation notions are not sufficient for handling failures in business processes if state changes involve consumable resources that cannot be undone. This paper presents a backward recovery mechanism to support the business process management domain. The proposed me...

Consider the linear system of equations of the form Ax = b where the coefficient matrix A ∈ Rn×n is nonsingular, large, sparse and nonsymmetric and also x, b ∈ R. We refer to this system as the original system. An explicit preconditioner M for this system is an approximation of matrix A−1. In [1], Lou presented the Backward Factored INVerse or BFINV algorithm which computes the inverse factoriz...