Abstract Numerical analysis is regularly used in engineering practice as useful mean to study component behavior service, especially when an experimental campaign too expensive or not practicable. software becoming more and powerful integrated, leaving the correct use of a material model weak point. As some materials could manifest unstable if deformed at high strain rate, it primary importance...

The uniaxial tensile loading tests of coarse-grained D6A steel (CG, d = 20 ?m) and fine-grained (FG, 1.5 were performed using a material testing machine rotating disk Hopkinson tension bar, respectively. stress–strain curves two steels at different strain rates (0.001~1500 s?1) obtained. Results show that grain refinement effectively improves the strength FG steel, which is achieved by high-den...

Aluminum alloy sheets are widely applied as structure components in automotive, aircraft and other industries to realize lightweight. Nowadays, many high strain rate forming techniques have been developed improve their formability widen application. To ensure the reliability of aluminum under conditions, it is imperative develop a thorough understanding alloy’s mechanical properties. In this pa...

In order to study the morphology characteristics of PTFE/Al reactive shaped charge jet and chemical reaction during formation, liners with aluminum particle sizes 5 ?m 100 were prepared. The parameters Johnson–Cook constitutive model materials (RMs) obtained through quasi-static compression experiments SHPB (Split Hopkinson Pressure Bar) experiments. X-ray imaging technology was used photograph...

Abstract The mechanical parameters of quenched and tempered AISI4140 the machining process characteristics are depending on material’s tempering state. practical relevance not only cutting forces tool wear, but also surface layer states machined part. In order to predict improve these efficiently, chip forming simulation via finite element method (FEM) is commonly applied. However, an issue in ...

Polymethyl methacrylate (PMMA) polymer is widely used in various fields today. In order to reveal the structural impact performance of PMMA materials underwater engineering thoroughly, this paper firstly proposed a simplified plate model for spherical shell hull under concentrative loading. Then, simulate hyper-elastic material properties process, Johnson–Cook constitutive and damage failure we...

Concrete, ceramics, rocks, metal-matrix composites, titanium alloys and other hard-to-cut materials are frequently cut using the non-traditional cold processing method known as abrasive water jet machining (AWJM). A virtual system is proposed in study to minimize roughness of surface residual stress during AWJM alloy Ti6Al4V. The workpiece simulated environments smoothed particle hydrodynamics ...