To solve the problem of springback in traditional multi-point forming (MPF), a new process, namely, with individually controlled force–displacement (MPF-ICFD), is proposed. In this manuscript, MPF and MPF-ICFD are compared. Taking cylindrical surface as research object, change plate analysed by experiments, distribution strain wall thickness numerical simulation. Theoretical analysis used to ca...

Abstract. This paper provides an analysis of the Rigid Body Motion (RBM) in multi-stage Single Point Incremental Forming a cylindrical cup. The RBM is studied using Digital Image Correlation to track material each contour tool, resulting better understanding phenomenon than has been shown literature. study shows that highest Z-translations midpoint cone take place last contours stage, where the...

    Supplier selection,   Multi-objective decision making,   Fuzzy Compromise programming,   Supply chain management,   Quantity discount .   Supplier selection is naturally a complex multi-objective problem including both quantitative and qualitative factors. This paper deals with this issue from a new view point. A quantity discount situation, which plays a role of motivator for buyer, is con...

Nowadays, with extending applications of bi-layer metallic sheets in different industrial sectors, accurate specification of each layer is very prominent to achieve desired properties. In order to predict behavior of sheets under different forming modes and determining rupture limit and necking, the concept of Forming Limit Diagram (FLD) is used. Optimization problem with objective functions an...

Multi-point forming (MPF) is an advanced and flexible method to form sheet metal workpieces. Although there are studies investigating different aspects of this method, the on effects pin diameter contact MPF insufficient. In study, pins with diameters 10, 12, 14 mm were used investigate damage factor, effective stress distribution, required loads three forms aluminum 1100 parts in finite elemen...

ultrasonic vibration assisted single point incremental forming (uvaspif) process is an attractive and adaptive method in which a sheet metal is gradually and locally formed by a vibrating hemispherical-head tool. the ultrasonic excitation of forming tool reduces the average of vertical component of forming force and spring-back rate of the formed sample. the spring-back phenomenon is one of the...