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Aiming at the characteristics of forming difficulty for the Semimonocoque, a finite element analysis on the precision forging was conducted by using rigid-plastic finite element method based on the DEFORM-3D software. The metal flow law during the forging process was studied. The equivalent stress, strain distribution and load-stroke curve were analyzed. The numerical simulation results were used...
An adjustable foaming machine that consisted of air feeding system, liquid feeding system, foaming device, and control system was designed to satisfy various demands on foam density and foam diameter in the preparation of foam concrete. The air-liquid ratio was adjusted by controlling the foaming liquid flow, and the adjustment of foam density was achieved. An adjustable single-foam tube structure...
We describe our attempts to fine‐tune the reactivity and selectivity of N‐fluorobenzenesulfonamide in fluorination reactions by changing the substituents on its phenyl rings. A series of N‐fluorobenzenesulfonamides bearing substituents at the ortho, meta, and para positions were prepared, and were used in the enantioselective fluorination of 2‐oxindoles catalysed by chiral palladium complexes. Fluorinating...
An automated balancing machine which can perform unbalance measurement and correction automated. It consists of measurement and control unit, mechanical base and execution unit. The function of each unit is demonstrated in detail. The equation of unbalance measurement and correction is deduced. The magnitude of rotor's unbalance and the mass need to be removed is calculated according to the equation...
The hydro-mechanical deep drawing process with radial pushing effect is studied by means of finite element simulation in conjunction with Taguchi method. An objective function for evaluating whatever the drawing operation is successful or failed is proposed. A design approach for optimization of the hydro-mechanical deep drawing process parameters is presented. It is capable of determining the optimal...
The business processes and its system characteristics of dynamic alliance based on application service provider (ASP) were analyzed. The key business processes models of dynamic alliance manufacturing resources management (DAMRM) based on ASP were put forward, that is, the dynamic alliance building processes and the schedule progress planning processes. Therefore business models of them were set up...
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